Moss on asphalt shingles / Green Building & Sustainable Home Renovation Information & Advice

...on and eventual failure. Green Growth: Moss and its Dangers Moss is a far more serious threat to basic asphalt shingles. The fibrous roots on moss can penetrate the space between shingles, lifting them up and making them vulnerable to wind and wind driven water penetration. Moss also acts like a giant sponge, holding m...