Moss may make your house look like a quaint little cabin from a story tale, but it can ravage a roof and create leaks. Moss can hold moisture against a roof and accelerate rot. Rather than allow moss to grow all over your cedar roof and cause widespread problems, you need to take steps to prevent moss from growing and to kill it if it does start growing.
How to Get Rid of Moss on Your Roof
Moss thrives in cool, damp places. While cedar shingles will repel water, they will soak up a little bit of water whenever rain falls. If you have trees that grow over your roof, they can shelter the roof enough to keep your shingles damp. Trees can also drip moisture onto your roof. To kill moss, one thing you need to do is allow your roof to dry out. Cutting the limbs away from your roof will expose your roof to the sun and allow it to dry out.
When the moss dries, you can sweep it off of your roof with a broom. Just make sure you always sweep with a downwards motion so that you don't damage your shingles. If you have moss that resists the broom treatment, spray it with bleach water, let it dry out for a couple of days, and then sweep it off again.
Preventing Future Infestations
Just because you get rid of the moss on your roof once does not mean that it won't come back. If you live in a damp region of the country, moss might be a constant threat. To keep your roof free of moss, you will need to treat your roof with something to prevent moss from growing. There are several chemicals you can buy commercially to treat your roof, but if you use one of these chemicals, you will have to reapply from time to time. There is a more permanent method for treating your roof.
If you install a strip of zinc flashing along the ridge of your roof, it will release mineral salts onto your roof when exposed to rainwater. This coating of mineral salts will stop moss from growing before it has a chance to even get started.
Moss can be a real problem. If you do nothing to stop moss from growing, it can ruin your roof. Luckily, moss is not that hard to deal with. With a little bit of work, you can make sure your cedar roof does not succumb to the ravages of moss.
Speak with a roof installation expert for more info.