Moss On Asphalt Shingle Roof

It s a tedious job but it is easier on the tiles than more invasive techniques.

Moss on asphalt shingle roof.

Moss on a roof begins with a thin dusting of green that you may notice only from low angles. Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye. Moss can be physically removed from the roof by hand. Moss loves moisture humidity and darkness.

Moss growth will also interfere with proper drainage of water off the roof as water needs to trickle through or around the moss instead of running straight down to the gutters. If you have an asphalt roof and want to keep it looking great and working well check out these facts you should know about moss growth and asphalt shingles. When it rains moss will soak up water and retain it creating consistently wet conditions on your roof. Unlike algae moss can be detrimental to asphalt shingle performance.

The asphalt roofing manufacturers association distinguishes between moss a plant with leaves that can grow into thick clumps and mold and mildew which are common names for types of algae that. If you live in an area with lots of shade from trees and buildings the moss can thrive even more. This thin layer on the top of the shingles expands and becomes wide thick and mat like. The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.

Potassium salts of fatty acids applied using a hose end spray attachment. Some roof shingle materials contain algaecides or fungicides which will also retard moss growth on the roof surface. Hose off and brush all moss loose from your roof shingles. The resulting constant exposure to water can degrade shingles.

For large expanses of an asphalt shingled roof use a long handled scrub brush made for cleaning gutters and roofs. How to get rid of algae on the roof. In severe cases moss build up can cause lateral water movement resulting in moisture damage to the roof deck or may even cause leaks. Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.

Moss can cause the leading edges of the shingles to lift or curl which increases the risk of shingle blow off during wind events. Moss is common in rainy environments because it loves moisture but it also loves humidity and many roofs are humid because of heat escaping the house sunlight hitting the roof and so forth.