How To Clean Moss Off Slate Roof

Run a hose fitted with a spray nozzle up to the roof.

How to clean moss off slate roof.

Hose off and brush all moss loose from your roof shingles. Point the hose towards the top of the roof and rinse off the moss killing solution along with the dead moss. Rinse the roof again with the hose to remove any remaining loose moss sitting on the roof. 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.

Use heavy rubber gloves to scoop up material in areas you can safely reach. With more severe environmental staining from tree sap and or pollution you may need a pressure washer 3800psi. Once the moss has been thoroughly eradicated from the roof take steps to keep moss from returning. In the seams use the sharp edge of the scraper like a dental pick to force out the moss.

Climb up to the roof and begin scraping off dead moss from the shingles using a putty knife or painter s 5 in 1 tool and working from the bottom up. Moss can tear through slate shingles with its roots and can promote excess dampness that rots the wood beneath your slate shingles. 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.

Take hold of the soft bristle brush and scrub away any remaining moss. Set up a ladder so you can access the roof. Use the tool to gently lift away matted moss that has gathered on the flat sections of the shingles. Cleaning asphalt shingles of clumps of moss or algae that have taken root in the roof can feel like an overwhelming endeavor.

There are many ways to remove moss that tends to grow in shaded areas.