To remove lichen and moss from the roof try the least toxic method for moss and lichen removal first oxygen bleach.
Lichen roof damage.
Nothing happened for a couple of months.
Our photographs below show a two harbors minnesota asphalt shingle roof with heavy moss and lichens growing on the same surface.
Roof moss and lichen are not only unsightly but can damage the roof over time.
If you are planning to sell the last thing you want is for buyers to label your home as a fixer upper.
Lichen accumulation on roofs is really a minor problem that will not hurt the roof.
You can see that comparing the loss of mineral granules where we have gently lifted off moss below left and where we used a knife blade to gently lift off lichens.
It was only then that damage to the roof granules became obvious.
Then slowly the lichens and moss began to turn brown and gray.
A reliable roof is one of the most important factors to new home buyers.
I installed 35 year warranty shingles when i built the house 21 years ago.
It took over a year for all the growth to die dry up and fall off the roof.
Always use a stable ladder and safety harness when climbing on the roof.
Will pressure washing really harm my roof.
Instead of just pushing the algae moss and lichens off your roof with pressure washing which can actually cause even more roof damage our specially designed soaps kill algae moss and lichens while protecting your family pets and the environment.
Moss damage compared with lichens damage to roofs.