Your roofers will need to remove all the shingles on your old roof or they may need to remove the largest chunks of moss with a pressure washer and then apply the new roof.
How to safely remove moss from a shingle roof.
The high powered water jets can damage shingles and remove the shingle granules that protect the roof.
We are an organic homestead.
It is only advisable to use a pressure washer because you no longer need to worry about the condition of the old roof.
This roof faces north east and we have had two very wet summers in sw michigan.
When leaves and other material collect on your roof a perfect bed is formed for moss and lichens to grow.
I m looking for a non toxic solution that will not harm the shingles cement porch siding or landscaping.
There are many ways to remove moss that tends to grow in shaded areas.
If you have a large amount of moss build up you will first have to scrub it off with a brush.
You can remove moss and lichens from your roof by using vinegar as a environmentally friendly weedkiller.
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.
Once the moss has been thoroughly eradicated from the roof take steps to keep moss from returning.
Apply a storebought or diy cleaning solution to remove the moss.
A thick growth of moss works like a sponge keeping the roofing damp for long.
Cleaning asphalt shingles of clumps of moss or algae that have taken root in the roof can feel like an overwhelming endeavor.
Moss itself is a plant while lichen conisist of a fungus and a photosyntheizing plant living together.
You sent is more worrisome because it can damage asphalt shingles.
How to remove moss from an asphalt roof.
One of the most common solutions to remove algae or moss is to lightly spray wash the roof with a 50 50 mix of water and bleach to remove the algae or moss no pressure washers they will strip off the granules and may cause.
I called our building contractor and he recommended bleach but i am not going in that direction.
Work on one small section at a time which allows you better control of the brush and your scrubbing motions.