Window Glossary

Window Glossary

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There are 5 names in this directory beginning with the letter L.
Lap
To overlap the ends of two siding panels or accessory pieces to allow for expansion and contraction of the vinyl product.

Lift Handle
for raising the lower sash in a double-hung window. Also called sash lift.

Lite
A unit of glass in a window.

Low E (Emissivity) Glass
Microscopically thin, virtually invisible, metal or metallic oxide layers deposited on a window or skylight glazing surface primarily to reduce the U-factor by suppressing radiative heat flow. A typical type of low-E coating is transparent to the solar spectrum (visible light and short-wave infrared radiation) and reflective of longwave infrared radiation.

Lug/Crimp
The raised “ears” or tabs on a siding panel, created by a snaplock punch, which can be used to lock a siding panel into place when the nailing hem has been removed.

TESTIMONIALS

Emily P. of Arlington, Arlington County, VA 22207

(Found on CheckBook.org) Wonderful experience with Edgar Li of Crystal Exteriors! We had an improperly installed and oddly sized entry door that needed to be replaced. I worked with three different installers, none could find a door that matched our contemporary style or budget (one quoted me $11,000 for a fiberglass door!) and none was willing to work with me to find a solution. Mr. Li found us a beautiful modern Provia door that was reasonably priced and his team did a great job of installing it, including fixing existing problems with the siding and trim. The best thing about working with Mr. Li was his responsiveness, he answered my emails promptly and patiently explained our options. He was quick to provide the quote and samples and came back himself to make sure everything was perfect. Would absolutely recommend using his company.

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