Roof Mold & Algae
Is it Mold?
Roof Mold and algae will cause a noticeable colour change to your roof, which is especially noticeable on lighter coloured shingles. There is a pretty good chance that if you see black streaks on your roof if you have blue-green algae or Gloeocapsa magma in scientific terms. Ottawa summers can get quite hot and humid which provides the perfect climate for algae to grow.
Is it harmful?
Yes, roof algae and mold can actually wear down your shingles and lead to more complicated and costly issues. Without proper roof maintenance not only will it wear down your shingles but your warranty as well. It is important to contact your roof professional if you have a newer roof as they can provide the roofing repair services required to clear the algae away and keep your warranty intact.
How can I get rid of it?
The easiest way is to wash the roof with a mixture of water and bleach; although this will work it can be a little tricky. First you have to wash all of it off which means getting on a ladder with a bucket of water and bleach. Second the bleach will run off your roof and be in contact with your yard. This means dead plants and lawns if you cannot protect them by covering them up.
You also might be thinking you’ll just take aim with your pressure washer which in theory sounds like a good idea. Unfortunately your pressure washer is going to be too powerful and will actually blast some of those shingles right off the roof. The wisest, safest and most effective thing to do is to call in a roofing repair company to take care of it for you.
How can I prevent it?
A roofing repair company can install zinc or copper strips at the peak of your roof that provide a nifty solution using science. The strips at the peak will cause metal molecules to come into contact with your shingles whenever it rains stopping algae from setting in.
Roof mold and algae can cause serious damage to your roof, to prevent this or have the problem removed consult your roofing services professional.