Roofing Contractor Glossary Of Roofing Terms
There are 161 entries in this glossary.All
| Term | Definition |
|---|---|
| AAMA |
American Architectural Manufacturers Association |
| Absorption |
The act or process of retaining foreign particles such as gas or liquid without transmission of these particles. |
| ACI |
American Concrete Institute |
| Acid Etch |
(1) The use of a strong acid to remove the surface of concrete thereby exposing the aggregate. (2) The use of a strong acid to etch the surface of material such as metal in order for that material to accept a primer or Spray Polyurethane Foam. |
| ACIL |
American Council of Independent Laboratories |
| Acrylic Coating |
A coating system with an acrylic resin base. |
| Acrylic Resin |
Polymers of acrylic or methacrylic monomers often used as a latex base for coating systems. |
| Active |
Will corrode in the presence of moisture or a "noble" metal. |
| Adhere |
The clinging of one surface to another; either molecularly or otherwise. |
| AGC |
Associated General Contractors of America |
| Aggregate |
A surfacing or ballast for a roof system. Aggregate can be rock, stone, crushed stone or slag, water-worn gravel, crushed lava rock or marble chips. |
| Algae discoloration |
A type of roof discoloration caused by algae, also called fungus growth. |
| Alligatoring |
Alligatoring is term used to describe the cracking of surfacing bitumen on a built-up roof. These cracks are the result of the limited tolerance of asphalt to thermal expansion or contraction, and produce a pattern that resembles an alligator's hide. |
| Asphalt shingle |
a shingle manufactured by coating a reinforcing material (felt or fibrous glass mat) with asphalt and having mineral granules on the side exposed to the weather. |
| Back surfacing |
Fine mineral matter applied to the back side of shingles to keep them from sticking. |
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