Why Do Roof Shingles Have Granules

They shield the asphalt and the fiberglass mat from the ultraviolet uv rays of the sun.

Why do roof shingles have granules.

It seems to be most prevalent early and later in the shingles life. While granules were first developed in the early 1900s it wasn t until the 1970s that manufacturers developed an algae resistant coating. Shingle granules shield the shingles from uv rays and increase their fire resistance. If you re not seeing many granules at all on the shingles it may be a good idea to give noland s roofing a call.

Granules serve several critical purposes and if shingles are deteriorating it may be time for repairs to keep your roof functional. The granules are what keep the roof weather proofed and without them your shingles are no match for the elements. Without the granules the. The ceramic granules on asphalt shingles provide a very important function.

During the manufacturing process the asphalt roofing sheet is literally flooded with those small colored roofing granules to ensure as many as possible will adhere to and therefore cover the sheet. These uv rays will rapidly disintegrate asphalt and the thin fiberglass mat. One of the ways asphalt shingles have been perfected over the years is with granules. Mineral granules were added to the design of shingles because they help protect your roof from excessive sun exposure which can eventually lead to damage and hasten the need for a roof replacement.

The granules cause the water to slide off the shingles and flow down the roof which is exactly what you want from your shingles. Durability granules help to ensure a lasting performance of shingles as they are exposed to harsh weather conditions over the years. Because granule loss is one of the signs that a roof is getting older it is used by inspectors as a gauge of roof condition and a way to estimate additional roof life. Our advice is to go outside and take a look at the shingles on your roof.

Some other aging clues are curling at shingle corners lack of tab adhesion and broken off pieces as the shingles get more brittle with age. Granules also add increased fire resistance to your roof offering another layer of protection to your home. Why you need granules on roof shingles 1. Roofing granules serve several purposes.

Granules naturally separate from shingles over its life. Shingle sediment is made up primarily of sand like granules or grit that separate from asphalt shingles and other small matter that sticks to the roof surface and washes into gutters. What causes granular loss.