GLOSSARY OF WINDOW TERMS
The Learning Center
Laminated Glass
An insulated glass unit in which one internal piece of glass is covered
(laminated) with an organic film. The film gives the glass an added degree of
resistance to breakage.
Lead Paint
All paints manufactured prior to 1978 had lead as one of the ingredients. It
was found that the lead in paints posed a safety hazard to the inhabitants of a
dwelling as the paint aged, cracked, peeled and became accessible to
ingestion particularly with children. The opening and closing of window
sashes, covered with lead paint would created a fine dust that posed a
particular threat.
Lift
Handle or grip installed on the bottom rail of the lower sash of a double-hung
window to make it easier to raise or lower the sash.
Lite
A section of glass. This term can be confusing, as it can refer to an entire
window (as in a 4-lite bow) or to one of the areas of glass divided up by
muntins/grids/grilles.
Laminated Glass - Masonry Opening
Low-E (emissivity) Coating
Low-E coated windows have a microscopically thin, virtually invisible metal
or metallic oxide layers deposited on the glass to reduce the emissivity or
heat transfer of the glass. This reduces the U-factor by suppressing
radiative heat-flow through the window, reducing the heat loss from your
house in the winter and it reduces the amount of heat that comes into your
house during the summer. This results in a lower heating and cooling bill.
Low-E coated windows are more expensive than clear windows and may
be required by your local building code. Coated windows can reduce the
amount of heat transfer by 40-70%.
Low-E Windows
Low-e windows are energy efficient windows which have been coated with
a special metallic coating that deflects UV and infrared rays and limits
solar heat gain. Usually used in conjunction with Double Glass Windows.
Masonry Opening
The opening in a masonry wall to accept a window or door unit, the same
as a rough opening in a frame wall.
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3245 Miracle Drive
Murrysville, PA 15668
724-387-2991
PA Contractor ID
PA001856
The Learning Center
Laminated Glass
An insulated glass unit in which one internal piece of glass is covered
(laminated) with an organic film. The film gives the glass an added degree of
resistance to breakage.
Lead Paint
All paints manufactured prior to 1978 had lead as one of the ingredients. It
was found that the lead in paints posed a safety hazard to the inhabitants of a
dwelling as the paint aged, cracked, peeled and became accessible to
ingestion particularly with children. The opening and closing of window
sashes, covered with lead paint would created a fine dust that posed a
particular threat.
Lift
Handle or grip installed on the bottom rail of the lower sash of a double-hung
window to make it easier to raise or lower the sash.
Lite
A section of glass. This term can be confusing, as it can refer to an entire
window (as in a 4-lite bow) or to one of the areas of glass divided up by
muntins/grids/grilles.
Laminated Glass - Masonry Opening
Low-E (emissivity) Coating
Low-E coated windows have a microscopically thin, virtually invisible metal
or metallic oxide layers deposited on the glass to reduce the emissivity or
heat transfer of the glass. This reduces the U-factor by suppressing
radiative heat-flow through the window, reducing the heat loss from your
house in the winter and it reduces the amount of heat that comes into your
house during the summer. This results in a lower heating and cooling bill.
Low-E coated windows are more expensive than clear windows and may
be required by your local building code. Coated windows can reduce the
amount of heat transfer by 40-70%.
Low-E Windows
Low-e windows are energy efficient windows which have been coated with
a special metallic coating that deflects UV and infrared rays and limits
solar heat gain. Usually used in conjunction with Double Glass Windows.
Masonry Opening
The opening in a masonry wall to accept a window or door unit, the same
as a rough opening in a frame wall.
< previous
main menu
next >
3245 Miracle Drive
Murrysville, PA 15668
724-387-2991
PA Contractor ID
PA001856
