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Glossary

Abstract Design

A design Whose forms have been reduced or modified from representational forms. A design using non-representational forms.

Abstract Design

A design Whose forms have been reduced or modified from representational forms. A design using non-representational forms.

Acrylic (1/4)

1/4 inch thick polyacrylic glazing sheet. Acrylic is 60 times more break-resistant than glass of the same thickness. For more information on Acrylic click here.

Acrylic (1/4)

1/4 inch thick polyacrylic glazing sheet. Acrylic is 60 times more break-resistant than glass of the same thickness. For more information on Acrylic click here.

Ambient Glass

The existing, diffused light. Light coming from many directions.

Ambient Glass

The existing, diffused light. Light coming from many directions.

Antique Glass

Mouth-blown sheet glass with the irregularity of "medieval" glass. Glass blown into a large cylinder that is cut, opened, and flattened into a sheet. Variations of antique glass may include seedy, crackle, flashed, opal, opak, reamy and streaky. "Antique" refers to the technique-not the age.

Antique Glass

Mouth-blown sheet glass with the irregularity of "medieval" glass. Glass blown into a large cylinder that is cut, opened, and flattened into a sheet. Variations of antique glass may include seedy, crackle, flashed, opal, opak, reamy and streaky. "Antique" refers to the technique-not the age.

Apse

The semi-circular termination of the east end of the chancel or chapel.

Apse

The semi-circular termination of the east end of the chancel or chapel.

Architectural Glass

Stained glass designed, made and installed to harmonize with the structure and function of a building.

Architectural Glass

Stained glass designed, made and installed to harmonize with the structure and function of a building.

Armature

A metal divisional bar or bars making a framework for supporting stained glass, usually fixed into a wall. Also used within concrete for strengthening.

Armature

A metal divisional bar or bars making a framework for supporting stained glass, usually fixed into a wall. Also used within concrete for strengthening.

Art Deco

The style of work produced in the early twentieth century that reached its apex at the Exposition Internationale des Arts Decoratifs et Industriels modernes held in Paris in 1925. Characterized by bold geometric shapes, streamlined and rectilinear forms.

Art Deco

The style of work produced in the early twentieth century that reached its apex at the Exposition Internationale des Arts Decoratifs et Industriels modernes held in Paris in 1925. Characterized by bold geometric shapes, streamlined and rectilinear forms.

Art Nouveau

French for "The New Art", an art movement popular in the 1890s and early 1900s in Europe and America. A busy, decorative style characterized by flowing vines and flat shapes ( as seen in Tiffany glass, ) and undulating lines.

Art Nouveau

French for "The New Art", an art movement popular in the 1890s and early 1900s in Europe and America. A busy, decorative style characterized by flowing vines and flat shapes ( as seen in Tiffany glass, ) and undulating lines.

Aureole

A radiant light around a head or body of the representation of a sacred person.

Aureole

A radiant light around a head or body of the representation of a sacred person.

Autonomous Panel

A non-architectural stained glass composition.

Autonomous Panel

A non-architectural stained glass composition.

Awning Window

A Window whose sash is hinged at the top and projects out when open.

Awning Window

A Window whose sash is hinged at the top and projects out when open.

Baptistery

A separate room or building of a church containing the font.

Baptistery

A separate room or building of a church containing the font.

Bar/Barring

A solid metal bar, often steel, held by cooper wire ties or solder directly to the interior of stained glass windows for support and reinforcement.

Bar/Barring

A solid metal bar, often steel, held by cooper wire ties or solder directly to the interior of stained glass windows for support and reinforcement.

Baroque

Machine made to imitate reamy glass. A style of art of the seventeenth and eighteenth centuries characterized by overblown realism and curved figures.

Baroque

Machine made to imitate reamy glass. A style of art of the seventeenth and eighteenth centuries characterized by overblown realism and curved figures.

Bauhus

An artistic style derived from the principles of a German school of architecture and design founded in 1919, and terminated prior to World War 11.

Bauhus

An artistic style derived from the principles of a German school of architecture and design founded in 1919, and terminated prior to World War 11.

Bay

The space between columns. One complete transverse unit of the architecture, interior or exterior.

Bay

The space between columns. One complete transverse unit of the architecture, interior or exterior.

Bay Window

Three or more window units attached to a building so as to project outward.

Bay Window

Three or more window units attached to a building so as to project outward.

Bending

The new aluminum divider bars used to set the protective covering will be bent to closely match the existing millwork. Associated Crafts craftsmen will custom fit and bend each divider bar on the site. Installing protective covering by bending the new protective covering frame minimizes shadowing… (more)

Bending

The new aluminum divider bars used to set the protective covering will be bent to closely match the existing millwork. Associated Crafts craftsmen will custom fit and bend each divider bar on the site. Installing protective covering by bending the new protective covering frame minimizes shadowing and leaves the building with a more appealing installation. Associated Crafts extrudes its own specially designed framing metal to be able to contour this framing to unequalled standards. Each Associated Crafts crew is equipped with our own custom designed benders that are exclusive to the Associated Crafts family.

Bevel

Cut and polished edge usually on plate glass at an angle other than 90 degrees, done in stages with roughing, smoothing, cork and felt wheel polishing.

Bevel

Cut and polished edge usually on plate glass at an angle other than 90 degrees, done in stages with roughing, smoothing, cork and felt wheel polishing.

Brace Bars

A reinforcing bar (usually flat or round in shape) that is used to support the stained glass panel thus preventing bulging. Most often these braces are installed in the interior of stained glasses.

Brace Bars

A reinforcing bar (usually flat or round in shape) that is used to support the stained glass panel thus preventing bulging. Most often these braces are installed in the interior of stained glasses.

Broken Painted and Stained Glass Replacement

Maintaining the originality is a high priority but in some cases, replacing the glass is the only choice. Generally a piece of glass needs to be replaced if it has a hole in it, is completely broken out or has multiple cracks.

Broken Painted and Stained Glass Replacement

Maintaining the originality is a high priority but in some cases, replacing the glass is the only choice. Generally a piece of glass needs to be replaced if it has a hole in it, is completely broken out or has multiple cracks.

Bulging

A bulge is a section of the window that has become so weak that the lead and the glass bow in or out. If this condition is allowed to remain unchecked, it will break the glass and the lead joints. Eventually the whole section is in danger of falling out. Flattening the bulge will be done by… (more)

Bulging

A bulge is a section of the window that has become so weak that the lead and the glass bow in or out. If this condition is allowed to remain unchecked, it will break the glass and the lead joints. Eventually the whole section is in danger of falling out. Flattening the bulge will be done by either in-place manipulation or by removing the bulged panel and working it flat on a table before reinstalling. After the bulges are flattened, a new steel brace will be installed to prevent re occurrence. Each new brace will be installed so that it will achieve maximum support with minimum intervention to the design.

Buttering

Applying a thin layer of putty or sealant to the flat surface before installing a window.

Buttering

Applying a thin layer of putty or sealant to the flat surface before installing a window.

Came (Calms)

Metal strips, "U' or "H" shaped, used to hold glass pieces together to form a stained glass window. Originally lead, but zinc, brass copper and lead ores are also used.

Came (Calms)

Metal strips, "U' or "H" shaped, used to hold glass pieces together to form a stained glass window. Originally lead, but zinc, brass copper and lead ores are also used.

Canopy

An architectural framing device to enclose a figure or scene.

Canopy

An architectural framing device to enclose a figure or scene.

Cartoon

The full-scale drawing for a window or panel, from which the individual pieces of a stained-glass window are sized to cut. The cartoon is also used as a guide when the window is leaded up. Full-size working drawing showing detail of leading and painting.

Cartoon

The full-scale drawing for a window or panel, from which the individual pieces of a stained-glass window are sized to cut. The cartoon is also used as a guide when the window is leaded up. Full-size working drawing showing detail of leading and painting.

Casement Window

A window sash hung by hinges and fastened to the window frame.

Casement Window

A window sash hung by hinges and fastened to the window frame.

Cathedral Glass

Machine rolled transparent colored glass.

Cathedral Glass

Machine rolled transparent colored glass.

Cats Paw

Opalescent glass with a mottled appearance that suggest cat paw prints.

Cats Paw

Opalescent glass with a mottled appearance that suggest cat paw prints.

Cement

A special liquid compound used to weatherproof new windows. It is also used to maintain old windows (re-cementing). Also see description of Re-cementing.

Cement

A special liquid compound used to weatherproof new windows. It is also used to maintain old windows (re-cementing). Also see description of Re-cementing.

Chancel

The east portion of the church set aside for the clergy and choir.

Chancel

The east portion of the church set aside for the clergy and choir.

Channel

"U" shaped groove in the came in which the glass sits.

Channel

"U" shaped groove in the came in which the glass sits.

Chipped Glass

A technique where glue pulls the surface of the glass, causing it to chip.

Chipped Glass

A technique where glue pulls the surface of the glass, causing it to chip.

Clear Penetrating Epoxy Sealer (CPES)

An epoxy sealer that is used on rotting wood. CPES impregnates the wood rather than coating it, arresting fungi and bacteria growth. CPES creates a stronger yet flexible piece of wood that fungi will not penetrate.

Clear Penetrating Epoxy Sealer (CPES)

An epoxy sealer that is used on rotting wood. CPES impregnates the wood rather than coating it, arresting fungi and bacteria growth. CPES creates a stronger yet flexible piece of wood that fungi will not penetrate.

Clerestory

The upper part of the nave above the side aisles of a church.

Clerestory

The upper part of the nave above the side aisles of a church.

Color

The very careful choice of colored glass, under natural light, so that an exact choice or replacement is possible. In restoration work a large inventory or "library" is essential so that when pieces are replaced, the selection is not constrained or limited. Literally thousands of colors,… (more)

Color

The very careful choice of colored glass, under natural light, so that an exact choice or replacement is possible. In restoration work a large inventory or "library" is essential so that when pieces are replaced, the selection is not constrained or limited. Literally thousands of colors, textures, and densities are possible.

Commercial Glass

Clear heavy glass with a pattern pressed on one side.

Commercial Glass

Clear heavy glass with a pattern pressed on one side.

Composition

The overall design of a finished piece containing balance of color and linear flow.

Composition

The overall design of a finished piece containing balance of color and linear flow.

Copper Foil

The mil-thickness copper material, often adhesive backed, used to join separate pieces of glass. The technique of joining pieces of glass where foil is centered on the edge of each glass piece, then bent over the edge to cover a very small portion of the back and front faces of the glass. … (more)

Copper Foil

The mil-thickness copper material, often adhesive backed, used to join separate pieces of glass. The technique of joining pieces of glass where foil is centered on the edge of each glass piece, then bent over the edge to cover a very small portion of the back and front faces of the glass. Pieces are abutted and solder is melted over the exposed foil surfaces, causing the foil-covered glass edges to become joined.

Cracked Glass (Repairing)

Maintaining the originality is an important part of a proper restoration. Associated Crafts will repair all possible cracks to maintain the originality of your stained glass.

Cracked Glass (Repairing)

Maintaining the originality is an important part of a proper restoration. Associated Crafts will repair all possible cracks to maintain the originality of your stained glass.

Crackel (craquel) Glass

Antique glass with cracked texture which has been intentionally introduced during the cooling process.

Crackel (craquel) Glass

Antique glass with cracked texture which has been intentionally introduced during the cooling process.

Cruciform

Cross shaped.

Cruciform

Cross shaped.

Cusp

The projecting points formed by the intersection of two segmental arcs of foils.

Cusp

The projecting points formed by the intersection of two segmental arcs of foils.

D.A.

Machine-drawn antique glass.

D.A.

Machine-drawn antique glass.

Dalle de Verre

A thick slab of cast stained glass that is cut or broken and cemented into a panel with an epoxy adhesive matrix.

Dalle de Verre

A thick slab of cast stained glass that is cut or broken and cemented into a panel with an epoxy adhesive matrix.

Daylight

Visible opening size.

Daylight

Visible opening size.

Dichroic Glass

Space-age application of super thin, clear layers of metal oxides which allows for either transmitted or reflected color, depending on the viewers viewing position.

Dichroic Glass

Space-age application of super thin, clear layers of metal oxides which allows for either transmitted or reflected color, depending on the viewers viewing position.

Divider Bars

The tee bars used to join the panels of stained glass that make up an entire window.

Divider Bars

The tee bars used to join the panels of stained glass that make up an entire window.

Double Glazed

The use of two pieces of glass, one in front of the other, with an air space between for insulation. A frame that is designed to house both the stained glass as well as the protective covering.

Double Glazed

The use of two pieces of glass, one in front of the other, with an air space between for insulation. A frame that is designed to house both the stained glass as well as the protective covering.

Double Hung

A window consisting of two-sashes of glass operating in a rectangular frame. Both upper and lower halves slide up and down to open.

Double Hung

A window consisting of two-sashes of glass operating in a rectangular frame. Both upper and lower halves slide up and down to open.

Double Strength Glass

One-eighth thick glass. Strength refers to thickness.

Double Strength Glass

One-eighth thick glass. Strength refers to thickness.

Drapery

The painting on glass that defines the drapery robes of figures, usually Biblical.

Drapery

The painting on glass that defines the drapery robes of figures, usually Biblical.

Drapery Glass

Heavily manipulated, folded or rippled glass that forms "drapes" that may be one inch or more thick.

Drapery Glass

Heavily manipulated, folded or rippled glass that forms "drapes" that may be one inch or more thick.

Dry Glazing

A method of securing glass in a frame with just resilient gaskets.

Dry Glazing

A method of securing glass in a frame with just resilient gaskets.

Dutchman

To cover a crack during repair, a flange of lead is applied over the crack, tucked under adjoining leads and soldered in place. This procedure has generally been replaced with either edge gluing or a thin copper foiled line.

Dutchman

To cover a crack during repair, a flange of lead is applied over the crack, tucked under adjoining leads and soldered in place. This procedure has generally been replaced with either edge gluing or a thin copper foiled line.

European Antique

Mouth-blown antique glass from Europe and England.

European Antique

Mouth-blown antique glass from Europe and England.

Exterior Glazed

Glass set from the exterior of the building.

Exterior Glazed

Glass set from the exterior of the building.

Exterior Glazed

Glass set from the exterior of the building.

Exterior Glazed

Glass set from the exterior of the building.

Exterior Stop

The molding that holds the light on the exterior of the frame.

Exterior Stop

The molding that holds the light on the exterior of the frame.

F.N.A.

French new antique glass, a machine-drawn antique glass.

F.N.A.

French new antique glass, a machine-drawn antique glass.

F.S.A.

French semi-antique, a machine-drawn antique glass.

F.S.A.

French semi-antique, a machine-drawn antique glass.

Facade

The front of a building.

Facade

The front of a building.

Faceted Glass

Faceted glass windows are constructed from 1 inch thick slabs of stained glass called dallies. Dallies are cut to fit the artist's cartoon using a glass cutter, a chipping hammer and an anvil. In some cases, a special saw is used on intricate cuts. After all these pieces of glass are cut and the… (more)

Faceted Glass

Faceted glass windows are constructed from 1 inch thick slabs of stained glass called dallies. Dallies are cut to fit the artist's cartoon using a glass cutter, a chipping hammer and an anvil. In some cases, a special saw is used on intricate cuts. After all these pieces of glass are cut and the granules are spread, a liquid epoxy resin is poured between the pieces of glass. Finally, granules are spread over the top of the epoxy. After allowing enough time to set up, the epoxy will harden leaving a very durable, strong art glass panel.

Favrile

Iridescent glass patented by Louis Comfort Tiffany in the 1880s, produced by the exposure of hot glass to metallic fumes and oxides.

Favrile

Iridescent glass patented by Louis Comfort Tiffany in the 1880s, produced by the exposure of hot glass to metallic fumes and oxides.

Fenestration

The arrangement of windows in a structure.

Fenestration

The arrangement of windows in a structure.

Fillet

A thin strip, or border of glass.

Fillet

A thin strip, or border of glass.

Fixed Window

A window permanently fastened to the frame.

Fixed Window

A window permanently fastened to the frame.

Flashed Glass

Sheet glass, usually clear, with a thin layer of colored glass on one side.

Flashed Glass

Sheet glass, usually clear, with a thin layer of colored glass on one side.

Flemish Glass

Clear cathedral glass with a large wavelike pattern on both sides.

Flemish Glass

Clear cathedral glass with a large wavelike pattern on both sides.

Float Plate Glass

Flat glass manufactured by floating the ribbon of drawn, molten glass on a long bath of molten tin, and fire-polishing the upper surface, yielding a smooth, polished surface on both sides.

Float Plate Glass

Flat glass manufactured by floating the ribbon of drawn, molten glass on a long bath of molten tin, and fire-polishing the upper surface, yielding a smooth, polished surface on both sides.

Frosted Glass

Glass with a white translucent surface resulting from sandblasting or etching.

Frosted Glass

Glass with a white translucent surface resulting from sandblasting or etching.

Full Antique

Mouth-blown antique sheet glass.

Full Antique

Mouth-blown antique sheet glass.

G.N.A.

German new antique, a machine-drawn antique glass.

G.N.A.

German new antique, a machine-drawn antique glass.

Glass etch

Any of several compounds that permit the frosting of glass.

Glass etch

Any of several compounds that permit the frosting of glass.

Glass globs

Thick, round pieces of clear or colored glass that have been faceted, molded or domed.

Glass globs

Thick, round pieces of clear or colored glass that have been faceted, molded or domed.

Glass jewels

Small pieces of clear or colored glass that have been faceted, molded or domed

Glass jewels

Small pieces of clear or colored glass that have been faceted, molded or domed

Glass Paint

Vitreous paints composed of metallic oxides and ground glass in a liquid vehicle and then fired on glass.

Glass Paint

Vitreous paints composed of metallic oxides and ground glass in a liquid vehicle and then fired on glass.

Glazing

The process of assembling pieces of glass and lead to make a window.

Glazing

The process of assembling pieces of glass and lead to make a window.

Glue Chip

The application of heated animal glue to sandblasted glass that , when dry, chips off, leaving a crystalline or icy look.

Glue Chip

The application of heated animal glue to sandblasted glass that , when dry, chips off, leaving a crystalline or icy look.

Goethe Glass

A clear blown glass without seeds or striation, just a slight surface distortion from the blowing process, similar to old window glass.

Goethe Glass

A clear blown glass without seeds or striation, just a slight surface distortion from the blowing process, similar to old window glass.

Gothic

A style, generally referring to architecture, found in western Europe from 12th through 16th centuries.

Gothic

A style, generally referring to architecture, found in western Europe from 12th through 16th centuries.

Granite Back Glass

Cathedral glass with a rolled bumpy, rough texture on one surface of the glass.

Granite Back Glass

Cathedral glass with a rolled bumpy, rough texture on one surface of the glass.

Grisaille

A panel or window of clear of light-colored glass painted with geometric or foliate designs. Sometimes used to refer to glass paints.

Grisaille

A panel or window of clear of light-colored glass painted with geometric or foliate designs. Sometimes used to refer to glass paints.

H Bar

An "H" shaped metal bar used as a support between two sections of a panel.

H Bar

An "H" shaped metal bar used as a support between two sections of a panel.

Halation

A phenomenon where light-colored glass, when surrounded by darker glass, seems to spread beyond actual boundaries, creating a halo effect.

Halation

A phenomenon where light-colored glass, when surrounded by darker glass, seems to spread beyond actual boundaries, creating a halo effect.

Hammered Glass

Cathedral glass with a tiny, tight, uniform pattern of round, smooth knobs.

Hammered Glass

Cathedral glass with a tiny, tight, uniform pattern of round, smooth knobs.

Hopper

A window whose sash is hinged at the bottom.

Hopper

A window whose sash is hinged at the bottom.

Iconography

A comprehensive plan for the subjects of works of art, not necessarily Christian.

Iconography

A comprehensive plan for the subjects of works of art, not necessarily Christian.

In Situ

In position.

In Situ

In position.

Inactive

The part of a window that is non-movable.

Inactive

The part of a window that is non-movable.

Insulated Glass

Two sheets of glass joined together by a spacer. Insulated glass acts as a barrier against internal and external noise as well as the elements.

Insulated Glass

Two sheets of glass joined together by a spacer. Insulated glass acts as a barrier against internal and external noise as well as the elements.

Iridescence

A surface treatment on glass that has a shiny, mother-of-pearl look.

Iridescence

A surface treatment on glass that has a shiny, mother-of-pearl look.

Isothermal glazing

System of protective outer glazing that inhabits conductivity of heat from the exterior to the interior surface of the complete window unit.

Isothermal glazing

System of protective outer glazing that inhabits conductivity of heat from the exterior to the interior surface of the complete window unit.

Jamb

The upright surface forming the side of a window.

Jamb

The upright surface forming the side of a window.

Laminated Glass

A clear plastic sheet laminated between two sheets of glass (i.e., a car windshield). For more information, follow the links below:

Laminated Glass
(more)

Laminated Glass

A clear plastic sheet laminated between two sheets of glass (i.e., a car windshield). For more information, follow the links below:

Laminated Glass
Tempered Glass

Lancet

A long, narrow window with a pointed arch.

Lancet

A long, narrow window with a pointed arch.

Lead Came

The grooved metal that surrounds each piece or glass in the window to hold the glass in place and to complement the design of the window.

Lead Came

The grooved metal that surrounds each piece or glass in the window to hold the glass in place and to complement the design of the window.

Leaded Glass

Refers to any combination of glass design etc., which is fabricated using a web of lead came.

Leaded Glass

Refers to any combination of glass design etc., which is fabricated using a web of lead came.

Light

An opening through which sunlight is admitted; also a section of a large window, usually found in series divided by mullions.

Light

An opening through which sunlight is admitted; also a section of a large window, usually found in series divided by mullions.

Matrix

Opaque material used as a cement to hold the glass in place in a faceted panel.

Matrix

Opaque material used as a cement to hold the glass in place in a faceted panel.

Medallion

A small, bordered picture area of a window, primarily of the twelfth and thirteenth centuries.

Medallion

A small, bordered picture area of a window, primarily of the twelfth and thirteenth centuries.

Medieval

A time period that included the Romanesque and Gothic periods, also called "The Middle Ages," from about A.D. 500 to 1500.

Medieval

A time period that included the Romanesque and Gothic periods, also called "The Middle Ages," from about A.D. 500 to 1500.

Mouth Blown

Glass produced by forcing air, by mouth, through a blowpipe into molten glass.

Mouth Blown

Glass produced by forcing air, by mouth, through a blowpipe into molten glass.

Mullion

The vertical strip dividing panes of a window.

Mullion

The vertical strip dividing panes of a window.

Muntin

The vertical strip dividing panes of a window.

Muntin

The vertical strip dividing panes of a window.

Narthex

The vestibule, or entrance of a church.

Narthex

The vestibule, or entrance of a church.

Nave

The long, central portion of a church auditorium.

Nave

The long, central portion of a church auditorium.

Negative Painting

A reverse glass-painting technique done on the back side of glass, in which the detail is painted before the background. Usually done with unfired paints.

Negative Painting

A reverse glass-painting technique done on the back side of glass, in which the detail is painted before the background. Usually done with unfired paints.

Negative Space

Any part of a glass window through which no light is transmitted, usually the dark lead line, matrix area of a window and/or an opaque painted area.

Negative Space

Any part of a glass window through which no light is transmitted, usually the dark lead line, matrix area of a window and/or an opaque painted area.

Neo Gothic

Nineteenth Century revival of Gothic style.

Neo Gothic

Nineteenth Century revival of Gothic style.

Nonrepresentational

Not representing any object. Not realistic.

Nonrepresentational

Not representing any object. Not realistic.

Norman Slabs

Glass blown into a rectangular mold and cut apart on the corners, resulting in square or rectangular pieces that are thin at the edges and thick in the middle.

Norman Slabs

Glass blown into a rectangular mold and cut apart on the corners, resulting in square or rectangular pieces that are thin at the edges and thick in the middle.

North Side

The north or left side of a church is traditionally the side of darkness and the Old Testament, Which is often reflected in the subject matter and colors of these windows. It is not necessarily compass north.

North Side

The north or left side of a church is traditionally the side of darkness and the Old Testament, Which is often reflected in the subject matter and colors of these windows. It is not necessarily compass north.

O.S.H.A.

Occupational Safety and Health Administration, charged with ascertaining that employers provide their employees a place of employment free from recognized hazards that are causing or are likely to cause death or serious harm to their employees.

O.S.H.A.

Occupational Safety and Health Administration, charged with ascertaining that employers provide their employees a place of employment free from recognized hazards that are causing or are likely to cause death or serious harm to their employees.

Obscure

Non-transparent glass resulting form painting, sandblasting or acid etching.

Obscure

Non-transparent glass resulting form painting, sandblasting or acid etching.

Oculus

A circular window without stone tracery. Also called Occhio, Occhi, Oculu.

Oculus

A circular window without stone tracery. Also called Occhio, Occhi, Oculu.

Opak

White opal flash on a colored antique.

Opak

White opal flash on a colored antique.

Opal Glass

A glass with a milky or resinous appearance.

Opal Glass

A glass with a milky or resinous appearance.

Opalescent Glass

Non-transparent or semi-opaque machine-rolloed glass often with two or more colors streaked together.

Opalescent Glass

Non-transparent or semi-opaque machine-rolloed glass often with two or more colors streaked together.

Opaque

Non transparent.

Opaque

Non transparent.

Paint (for glass)

A mixture of finely ground glass, metallic oxides and a liquid mixing agent, such as water and gum arabic, used for painting on glass. It has to be fired for permanent adhesion.

Paint (for glass)

A mixture of finely ground glass, metallic oxides and a liquid mixing agent, such as water and gum arabic, used for painting on glass. It has to be fired for permanent adhesion.

Painted Glass

Painted glass is stained glass painted and fired in a kiln to a temperature of 1,200 degrees so the paint can fuse into the glass.

Painted Glass

Painted glass is stained glass painted and fired in a kiln to a temperature of 1,200 degrees so the paint can fuse into the glass.

Palladian Window

A window with three panels, the center panel being wider, with an arched top.

Palladian Window

A window with three panels, the center panel being wider, with an arched top.

Panel

Unit of stained glass leaded together and made to fit an opening in the framework of a window. May be of any shape.

Panel

Unit of stained glass leaded together and made to fit an opening in the framework of a window. May be of any shape.

Panning or Cladding

Is the process of wrapping exposed wood with flat aluminum coil stock to make a maintenance-free surface.

Panning or Cladding

Is the process of wrapping exposed wood with flat aluminum coil stock to make a maintenance-free surface.

Perimeter Bar

An F-shaped metal bar usually composed of aluminum that serves as the perimeter frame for protective glazing.

Perimeter Bar

An F-shaped metal bar usually composed of aluminum that serves as the perimeter frame for protective glazing.

Perimeter Framing

Framing that will fit the entire perimeter of the stained glass window.

Perimeter Framing

Framing that will fit the entire perimeter of the stained glass window.

Pivoted Window

A window that swings open on pivots at the top and bottom.

Pivoted Window

A window that swings open on pivots at the top and bottom.

Plate Glass

Machine-made glass that has been ground and polished so that it is free of flaws and distortions. It is usually at least 1/4 inch thick and is used primarily for bevels, mirrors and large store windows. Until the early 20th century, polished plate was optically much clearer than standard window… (more)

Plate Glass

Machine-made glass that has been ground and polished so that it is free of flaws and distortions. It is usually at least 1/4 inch thick and is used primarily for bevels, mirrors and large store windows. Until the early 20th century, polished plate was optically much clearer than standard window glass.

Plating

Putting a second piece of glass over a portion of a panel to alter the color, or for reinforcing old glass.

Plating

Putting a second piece of glass over a portion of a panel to alter the color, or for reinforcing old glass.

Points

Small flat triangles of zinc used to hold glass in a wooden window sash.

Points

Small flat triangles of zinc used to hold glass in a wooden window sash.

Presbytery

The east end of the church housing the altar.

Presbytery

The east end of the church housing the altar.

Quarries

Diamonds or rectangles of glass leaded together in a lattice design.

Quarries

Diamonds or rectangles of glass leaded together in a lattice design.

Quatrefoil

Small opening in Gothic tracery having four arched sites. Also called arabesque.

Quatrefoil

Small opening in Gothic tracery having four arched sites. Also called arabesque.

Rabbet

An "L" cut all around the perimeter of the window frames, against which the stained glass panels are installed.

Rabbet

An "L" cut all around the perimeter of the window frames, against which the stained glass panels are installed.

Re-cementing

The process of applying a specially formulated compound to the exterior surface of the stained glass window. This specially formulated cement compound is brushed underneath the lead flanges, to replace the original cement compound which has loosened or fallen out over the years. This process also… (more)

Re-cementing

The process of applying a specially formulated compound to the exterior surface of the stained glass window. This specially formulated cement compound is brushed underneath the lead flanges, to replace the original cement compound which has loosened or fallen out over the years. This process also does an excellent job of cleaning the window.

Re-leading

Refers to the process of complete historic restoration, where each stained glass panel is documented, disassembled and reassembled using all new lead came and solder. Each panel will be cemented on both sides and a proper bracing system installed before reinstallation.

Re-leading

Refers to the process of complete historic restoration, where each stained glass panel is documented, disassembled and reassembled using all new lead came and solder. Each panel will be cemented on both sides and a proper bracing system installed before reinstallation.

Reamy

Full antique glass with cords of wavy, irregular surface and large bubbles.

Reamy

Full antique glass with cords of wavy, irregular surface and large bubbles.

Reed Glass

Clear commercial glass with half circle ribs (refrigerator shelf glass).

Reed Glass

Clear commercial glass with half circle ribs (refrigerator shelf glass).

Reflected Glass

Light being reflected off the surface of glass as opposed to transmitted light.

Reflected Glass

Light being reflected off the surface of glass as opposed to transmitted light.

Reglet

A "U" shaped groove in wood or stone used for setting a window.

Reglet

A "U" shaped groove in wood or stone used for setting a window.

Reinforcing Rod

Galvanized steel rods of bars used to prevent a stained glass window from sagging of bowing.

Reinforcing Rod

Galvanized steel rods of bars used to prevent a stained glass window from sagging of bowing.

Renaissance

The reintroduction of classical styles in the 15th and 16th centuries.

Renaissance

The reintroduction of classical styles in the 15th and 16th centuries.

Rendering

A thumbnail sketch, which is usually a color sketch of the proposed window(s).

Rendering

A thumbnail sketch, which is usually a color sketch of the proposed window(s).

Reredos

The screen at the back of the altar.

Reredos

The screen at the back of the altar.

Ring Mottled

Opaque glass with spots of a translucent color.

Ring Mottled

Opaque glass with spots of a translucent color.

Ripple Glass

Machin-rolled glass, the rippled texture of which is imprinted from the roller.

Ripple Glass

Machin-rolled glass, the rippled texture of which is imprinted from the roller.

Rolled Glass

Sheet glass formed by a roller flattening the glass into sheets.

Rolled Glass

Sheet glass formed by a roller flattening the glass into sheets.

Romanesque

A style founded on Roman principles, most prevalent in architecture in western Europe from the ninth through the twelfth centuries.

Romanesque

A style founded on Roman principles, most prevalent in architecture in western Europe from the ninth through the twelfth centuries.

Rondel (Roundel)

Round spun disk of stained glass with a punty mark in the center.

Rondel (Roundel)

Round spun disk of stained glass with a punty mark in the center.

Rose Window

A circular window divided by tracery usually on the large west wall of a cathedral.

Rose Window

A circular window divided by tracery usually on the large west wall of a cathedral.

S.A.

Semi-antique glass.

S.A.

Semi-antique glass.

Saddle Bar

A metal bar attached to the inside of a stained glass panel and secured to the window jambs to prevent bulging or sagging, or secondary structural elements set into the window frame and attached to the window panels by solder and copper wires to provide additional bracing and support.

Saddle Bar

A metal bar attached to the inside of a stained glass panel and secured to the window jambs to prevent bulging or sagging, or secondary structural elements set into the window frame and attached to the window panels by solder and copper wires to provide additional bracing and support.

Sanctuary

The area of the church where the altar is located.

Sanctuary

The area of the church where the altar is located.

Sand Carving

Abrasive etching done deeper and in layers, creating a sculpture effect.

Sand Carving

Abrasive etching done deeper and in layers, creating a sculpture effect.

Sandblasting

The technique of blowing abrasive materials under pressure onto the glass surface to etch away part of the glass.

Sandblasting

The technique of blowing abrasive materials under pressure onto the glass surface to etch away part of the glass.

Sash

The window frame.

Sash

The window frame.

Seedy Glass

Glass that has tiny bubbles through out.

Seedy Glass

Glass that has tiny bubbles through out.

Semi Antique Glass

Manchin-drawn transparent glass made to imitate the look of antique glass. Also called D.A., S.A., G.N.A., F.N.A. and New antique.

Semi Antique Glass

Manchin-drawn transparent glass made to imitate the look of antique glass. Also called D.A., S.A., G.N.A., F.N.A. and New antique.

Shims

All blocks used as spacers in installing a window.

Shims

All blocks used as spacers in installing a window.

Silkscreeing

A printing method of applying paint to glass.

Silkscreeing

A printing method of applying paint to glass.

Silver Stain

A mixture containing silver salts, which, when fired on glass, sinks into the glass, causing a permanent color ranging from pale yellow to amber.

Silver Stain

A mixture containing silver salts, which, when fired on glass, sinks into the glass, causing a permanent color ranging from pale yellow to amber.

Single Glazed

The use of a single thickness of glass in a window. This frame holds only one glazing material.

Single Glazed

The use of a single thickness of glass in a window. This frame holds only one glazing material.

Single Hung

Window that has a stationary top and a moveable bottom half.

Single Hung

Window that has a stationary top and a moveable bottom half.

Single Strength

Window glass 1/16" thick.

Single Strength

Window glass 1/16" thick.

Slab Glass

Transparent stained glass cast one inch thick.

Slab Glass

Transparent stained glass cast one inch thick.

Solder

A mixture of tin and lead, which for glass workers is manufactured to melt around 400 degrees Fahrenheit. After leading up, all the cames of a mosaic window are joined with a thin layer of solder (referred to as sweating the lead joints).

Solder

A mixture of tin and lead, which for glass workers is manufactured to melt around 400 degrees Fahrenheit. After leading up, all the cames of a mosaic window are joined with a thin layer of solder (referred to as sweating the lead joints).

South Side

The south of right side of a church is traditionally the side of Light and the New Testament, which is often reflected in the subject matter and colors of these windows. It is not necessarily compass south.

South Side

The south of right side of a church is traditionally the side of Light and the New Testament, which is often reflected in the subject matter and colors of these windows. It is not necessarily compass south.

Spring Line

The horizontal line below which the upright sides end and the curve of the arch begins.

Spring Line

The horizontal line below which the upright sides end and the curve of the arch begins.

Stationary Stop

The permanent stop or lip of the window sash that holds the panel in place.

Stationary Stop

The permanent stop or lip of the window sash that holds the panel in place.

Stop

Wood or metal flange used to hold a window in place.

Stop

Wood or metal flange used to hold a window in place.

Streaky

Having a color of colors unevenly distributed in sheet glass to form steaks or swirls.

Streaky

Having a color of colors unevenly distributed in sheet glass to form steaks or swirls.

Strength of Glass

Refers to the thickness of glass, i.e., single or double strength.

Strength of Glass

Refers to the thickness of glass, i.e., single or double strength.

Support Bars

Iron bars tied to the leaded panel by copper wire for reinforcing.

Support Bars

Iron bars tied to the leaded panel by copper wire for reinforcing.

T Bar

Mental "T" shaped mullions put into a frame opening to support glass panels that will be set one above the other. The T bars receive the weight of each panel and transfer it to the frame.

T Bar

Mental "T" shaped mullions put into a frame opening to support glass panels that will be set one above the other. The T bars receive the weight of each panel and transfer it to the frame.

T-Bar

A T-shaped steel or aluminum bar that divides the stained glass or exterior glazing panels and transfers the weight of the panels to the jambs.

T-Bar

A T-shaped steel or aluminum bar that divides the stained glass or exterior glazing panels and transfers the weight of the panels to the jambs.

The Wires

Copper wires soldered to the panel and twisted around a saddle bar.

The Wires

Copper wires soldered to the panel and twisted around a saddle bar.

Thermal Shock

Cracking caused by uneven rapid heating or cooling of glass.

Thermal Shock

Cracking caused by uneven rapid heating or cooling of glass.

Thermos Barrier

These frames will hold both the stained glass as well as the protective covering. This framing has a built-in plastic barrier, which slows down the transfer of heat or cold to the inside of the frame, virtually eliminating condensation on the interior of the frame.

Thermos Barrier

These frames will hold both the stained glass as well as the protective covering. This framing has a built-in plastic barrier, which slows down the transfer of heat or cold to the inside of the frame, virtually eliminating condensation on the interior of the frame.

Tracery

The stone framework in a gothic window.

Tracery

The stone framework in a gothic window.

Traditional Design

Motifs and styles handed down from one generation to another .

Traditional Design

Motifs and styles handed down from one generation to another .

Transept

The transverse section of a church crossing the main nave.

Transept

The transverse section of a church crossing the main nave.

Transmitted Light

Light that passes through transparent or translucent glass.

Transmitted Light

Light that passes through transparent or translucent glass.

Transom Window

A window above a door.

Transom Window

A window above a door.

Transparent

Admitting the passage of light with a clear view beyond.

Transparent

Admitting the passage of light with a clear view beyond.

Trefoil

A small opening in Gothic tracery having three arcs. A garland design with three loops.

Trefoil

A small opening in Gothic tracery having three arcs. A garland design with three loops.

Triptych

A picture, carving, etc. with three parts.

Triptych

A picture, carving, etc. with three parts.

Tympanum

The triangular space above a door, sometimes containing a window.

Tympanum

The triangular space above a door, sometimes containing a window.

Ventilators Aluminum

Special custom fit ventilation unit to replace damaged vents or new construction, these provide weatherproof seal and fluid operation. Steel ventilators are also available.

Ventilators Aluminum

Special custom fit ventilation unit to replace damaged vents or new construction, these provide weatherproof seal and fluid operation. Steel ventilators are also available.

Venting of Protective Covering System

The venting system is necessary to reduce heat build-up and reduce the potential for condensation, which preserves the stained glass windows.

Venting of Protective Covering System

The venting system is necessary to reduce heat build-up and reduce the potential for condensation, which preserves the stained glass windows.

Vitreous Paint

A mixture of ground glass and metallic oxides used to paint on glass.

Vitreous Paint

A mixture of ground glass and metallic oxides used to paint on glass.

West End

The west or entrance end of the church is the people's area. Usually the large west wall has the rose window. It is not necessarily compass west.

West End

The west or entrance end of the church is the people's area. Usually the large west wall has the rose window. It is not necessarily compass west.

White Glass

Term often misused for clear glass.

White Glass

Term often misused for clear glass.

Window Glass

Clear glass.

Window Glass

Clear glass.

Wispy

Cathedral glass containing white cloud-like steaks.

Wispy

Cathedral glass containing white cloud-like steaks.

Z-Section

A Z-shaped metal extrusion found at the perimeter of the sash.

Z-Section

A Z-shaped metal extrusion found at the perimeter of the sash.