Roof Stains Asphalt Shingles

Some roofing consultants including mr.

Roof stains asphalt shingles.

The algae feed on the limestone in shingles. 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. As the blue green algae accumulate they develop a dark hardened outer coating which results in the black stains you see. Roof shingles are exposed to a lot of wear and tear as extreme heat sun wind and precipitation come into contact with them.

For cr s roofing tests we focus strictly on asphalt roofing shingles because they re by far the most common choice for roofs. 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. This concentrated roof cleaner saves time with no rinsing required. 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.

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. Other dark roof stains from specific sources include soot from chimneys brown black around a chimney and down roof from the chimney and. Do shingles on your north west or other shaded roofs have streaky moldy stains.

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

It is not uncommon for roof shingles to turn black over time. When that happens it is generally caused by mildew algae mold or dirt stains. Surface residues or discoloring stains can affect almost any type of roof. The black streaks running down roofs are actually a hardy algae called gloeocapsa magma.

After you paint the asphalt shingles they must be touched up and repainted to remain in good condition. Here s how to clean the ugly discoloration and keep it from coming back.