Roof Moss Removal Tips for Roofs with Asphalt Shingles

moss covered roof
  • 1-4 hours
  • Intermediate
  • 0-50

Roof moss can be an eye sore and also break down the integrity of asphalt-shingle roofs. There are a few tips for removing moss from asphalt shingles.

1. Scrub

Moss consists of various green flowerless plants. They reproduce by spores and prefer moist habitats. They are found in different varieties: club moss, Irish moss, and Spanish moss. One way to remove roof moss is with elbow grease. You can use a pole scrub brush to push the moss loose from the roof. This may be necessary in cases where the moss has grown very thick. There are also roof moss scrapers available. Do not apply any more force than necessary to remove the moss. You do not want to damage the asphalt shingles.

2. Herbicides and Bleach

As moss is a plant, it can be killed using various herbicides. When spraying herbicide on a roof, use caution. Wind drift and roof drainage can cause unwanted damage to other plants. Oxygen bleach is another way to kill and remove roof moss. Oxygen bleach is safer than chlorine bleach because it will not affect metal gutters and other roof drainage. It comes in a powder that is mixed with water and sprayed on.