How To Clean Moss Off Slate Roof

Set up a ladder so you can access the roof.

How to clean moss off slate roof.

Use heavy rubber gloves to scoop up material in areas you can safely reach. Once the moss has been thoroughly eradicated from the roof take steps to keep moss from returning. Point the hose towards the top of the roof and rinse off the moss killing solution along with the dead moss. With more severe environmental staining from tree sap and or pollution you may need a pressure washer 3800psi.

Rinse the roof again with the hose to remove any remaining loose moss sitting on the roof. Take hold of the soft bristle brush and scrub away any remaining moss. Use the tool to gently lift away matted moss that has gathered on the flat sections of the shingles. A vinyl leaf rake can clean harder to reach spots.

There are many ways to remove moss that tends to grow in shaded areas. In the seams use the sharp edge of the scraper like a dental pick to force out the moss. Run a hose fitted with a spray nozzle up to the roof. Moss can tear through slate shingles with its roots and can promote excess dampness that rots the wood beneath your slate shingles.

If you have moss mold or rust spots that are reachable gently scrub them with a medium stiff brush and a solution of 1 4 cup general household cleaner to one gallon of water. Clean slate roofs in hot weather so they dry fast or at least on a clear day with plenty of sunlight. With moss and algae type growth a soft brush a hose sprayer and a lot of elbow grease will get it off. We ve heard that a 24 ft extension pole and a 12 5 inch wall washer can work well when attached to a pressure washer.

Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye.