Posted on: 6 October 2015
If your roof is heavily shaded and receives a great deal of rainfall, it is likely that moss will start growing on the surface. If this occurs, it is a serious roofing problem, as moss will quickly degrade most roofing materials, and move or shift your shingles so that water can seep into your home, which can cause further mold and mildew growth in the interior. If you notice that your roof has started to grow moss, you should remove it as soon as possible. Thankfully, the removal process is fairly simple, and will only take a few hours with the right tools and know how.
Before You Begin
You'll need a ladder, a garden hose, a spray nozzle for the hose, a stiff bristled brush (preferably with a long handle), and a commercial moss cleaner, all of which are available at most hardware stores. You should also wear safety goggles and rubber gloves, as most commercial cleaners can irritate your skin. Having someone spot you while you're on the ladder is also a good idea.
Removing Moss from Your Roof
Climb up onto the roof, and use the hose to spray from the apex of the roof down toward the gutter. This prevents water from getting underneath the shingles and will remove any loose moss.
Use the brush to scrub down your roof, scrubbing gently to avoid damaging the shingles. Once you've removed as much of the moss as possible by scrubbing, move on to the commercial cleaner.
Follow the directions for the cleaner – some are dry powders that can be applied directly to the moss, while others need to be mixed with water in a spray bottle and liberally applied. Follow the directions exactly, letting the cleaners sit for as long as needed before rinsing them off.
If you don't want to use a commercial cleaner, you can make a homemade mixture of one part white vinegar to four parts water and apply it liberally to the moss with a spray bottle. Let it sit for an hour, and then rinse it off with your hose.
Once you've removed the moss, your roof is as good as new. However, to be proactive and prevent moss from coming back in the future, you should check and scrub your roof every few months. You can also install zinc strips on your roof, which will prevent moss and other plant growth.
For more information, contact a roofing contractor in your area.Share