Roof Stains Asphalt Shingles

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.

Roof stains asphalt shingles.

Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them. Asphalt shingles are easy to install last anywhere from 10 to 50. Black streaks on the north and west facing and shaded areas of your asphalt shingled roof can really wreck the appearance of your home. Here s how to clean the ugly discoloration and keep it from coming back.

Using bleach is recommended by most shingle roof manufactures and the arma asphalt roofing manufactures association. It is not uncommon for roof shingles to turn black over time. 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. This concentrated roof cleaner when mixed with water can cover 1000 2000.

Spray forget revolutionary roof cleaner concentrate removes stains caused by algae mold and mildew. Great for outdoor use on asphalt shingles wood shingles slate shingles and clay tile shingles. After you paint the asphalt shingles they must be touched up and repainted to remain in good condition. Some roofing consultants including mr.

The black streaks running down roofs are actually a hardy algae called gloeocapsa magma. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. The most effective method of cleaning algae and moss from a roof is w ith a 50 50 mix of laundry strength liquid chlorine bleach and w ater. Do shingles on your north west or other shaded roofs have streaky moldy stains.

Painting the asphalt shingles will cost less than replacing them but it will not be a permanent fix. Surface residues or discoloring stains can affect almost any type of roof. For cr s roofing tests we focus strictly on asphalt roofing shingles because they re by far the most common choice for roofs. This concentrated roof cleaner saves time with no rinsing required.

The algae feed on the limestone in shingles. Other dark roof stains from specific sources include soot from chimneys brown black around a chimney and down roof from the chimney and.