An alternative to manually removing the moss with a brush and trowel is to use chemicals.
Scraping moss off roof tiles.
Most techniques that we have come across to remove moss are often achieved by violent means such as power washing which may cause damage to the roof.
A north facing roof usually has little sunlight which enables moss to buildup on the roof.
Scrape off the moss.
Scraping moss off the roof.
One of the most gentle yet effective ways to remove roof moss and clean the roof is by way of scraping.
There are a range of chemicals to use on your roof to kill any moss and the benefit with using a chemical is that it will remove all of the smaller moss spores that you can t necessarily see and any moss that is beneath the tiles.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.
In the seams use the sharp edge of the scraper like a dental pick to.
Moss can be scraped off by hand but this must be performed with caution to avoid damaging roof tiles particularly in the case of timber or asphalt shingles.
Hose off and brush all moss loose from your roof shingles.
Use a nylon roof moss scraper after conducting a suitability test scrape to ensure the tile s coating will not be damaged.
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.
Pre wet clay tiles if using a steel roof moss scraper to provide lubrication and scrape the moss from the roof with care respecting the relative fragility of.
Be careful scraping moss from coated concrete tiles.
Moss can grow quite quickly and it will grow in between roof tiles filling in the voids and lifting up roof tiles and slates.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye protection.
Before proceeding with any remedial work to remove moss or lichen we would recommend speaking to a roofing maintenance professional.
Before applying a moss remover cleaner use a scrub brush 3 15 the home depot or a long handled soft bristle brush to gently scrape or pluck moss from the roof shingles or tiles.
Moss growing under roof slate and tiles can push the slate out of position allowing rainwater to seep into the roof structure.