Moss, Tree Debris, and the Slow Damage
Moss is not cosmetic on a Hockinson roof. Moss and algae can leave roofs covered in dark streaks and debris, obscuring the true condition of your shingles. It sponges moisture against the shingle mat, lifts edges during freeze-thaw, and shortens roof service life by 3-5 years. Algae streaks strip granules and accelerate UV damage. Ongoing upkeep is essential to prevent moss and algae from causing long-term damage and to preserve your roof's appearance and integrity. Pressure washing voids most manufacturer warranties. Valiant brush-cleans, treats with non-corrosive soap, and installs zinc strips at the ridge so the roof self-treats for years.














