Roof Stains Asphalt Shingles

For cr s roofing tests we focus strictly on asphalt roofing shingles because they re by far the most common choice for roofs.

Roof stains asphalt shingles.

Painting your shingles does not require a lot of preparation work and it will help improve your roof s look. This concentrated roof cleaner saves time with no rinsing required. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. Do shingles on your north west or other shaded roofs have streaky moldy stains.

One particular condition that has been an issue in southern areas for many years but has become more commonplace in other regions in recent years is the staining of asphalt shingle roofing caused by algae. Norman above assert that many of the black stains on asphalt shingle roofs are due to algae growth and that extractive bleeding may not be a current roof problem. After you paint the asphalt shingles they must be touched up and repainted to remain in good condition. The black streaks running down roofs are actually a hardy algae called gloeocapsa magma.

The algae feed on the limestone in shingles. Some roofing consultants including mr. Great for outdoor use on asphalt shingles wood shingles slate shingles and clay tile shingles. Black streaks on the north and west facing and shaded areas of your asphalt shingled roof can really wreck the appearance of your home.

Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association. Here s how to clean the ugly discoloration and keep it from coming back. Other dark roof stains from specific sources include soot from chimneys brown black around a chimney and down roof from the chimney and. It is not uncommon for roof shingles to turn black over time.

This concentrated roof cleaner when mixed with water can cover 1000 2000. Surface residues or discoloring stains can affect almost any type of roof. Here is a diagnostic guide to types of stains and staining materials found on roof surfaces black red green brown or other coloured stains on asphalt roof shingles or on other roofing materials need first an accurate diagnosis of the stain cause and then proper steps to remove the stain or to prevent future staining on roof shingles surfaces. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them.

Painting the asphalt shingles will cost less than replacing them but it will not be a permanent fix. Asphalt shingles are easy to install last anywhere from 10 to 50.