Materials
What is Granules?
Roofing Glossary · Materials
Definition
The mineral stone chips embedded in the surface asphalt of shingles. Granules protect the underlying asphalt from UV degradation, provide the shingle's color, improve fire resistance, and give the shingle its texture. Granules are typically ceramic-coated and may include algae-resistant copper granules or special reflective granules for cool roof applications.
Related Roofing Terms
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Granule LossThe shedding of mineral granules from the surface of asphalt shingles due to weathering, manufacturi...
→Algae GrowthBlack streaking and discoloration on asphalt shingles caused by Gloeocapsa magma, a cyanobacteria (b...
→Asphalt ShinglesThe most widely installed residential roofing material in North America, consisting of a fiberglass ...
→Cool RoofA roofing system specifically designed to reflect more solar energy and emit absorbed heat more effi...
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