It will ensure that your roof is free of debris, leaves and sticks. Clean Break Home Services offers comprehensive professional roof cleaning in Vancouver to help extend the life of your roof. Summer is the best time to remove moss from the roof. The non-toxic spray we use to kill moss is only effective when the plants are completely dry.
The compound also needs several days of dry weather to do its job thoroughly. If you consider that the cost of hiring a professional to clean your roof is going to be several hundred pounds (for a standard townhouse), it's worth considering cleaning it yourself. If done thoroughly, the roof must remain moss-free for at least 3 years. After 4 years, you'll likely start to see the light grow back.
Some popular cleansers include Wet %26 Forget (see on Amazon), an aerosol product to remove moss, mold and mildew; the 2-in-1 moss and algae killer Bayer (see on Amazon), a potassium soap with fatty acids and inert ingredients that is mixed with water and then sprayed; and Moss B Ware (see on Amazon), a powder zinc sulfate monohydrate that can be applied dry or mixed with water. When using a broom (if the roof isn't too steep), start at the top and remove the moss by sweeping the roof. While pressure washing can cause damage if done by the wrong person, the right type of shingles, performed by an experienced roof cleaner, is a very effective method for removing moss from the ceiling. The rate at which moss grows depends on several factors, such as the amount of rain your home receives, the number and type of nearby trees, the amount of sunlight and shade your roof receives during the day, and how you've handled moss on your roof in the past.
It spreads by spores, spread by the wind, which end up sticking to a roof and turning into moss. Removing debris every year is essential for proper roof maintenance and will ensure that moss and algae have little organic material to feed on. Once the larger clumps have been removed, wash the roof with a combination of equal parts of water and bleach with chlorine to kill any remaining moss. If you're thinking of applying a chemical that kills moss, you'll need to do it *after* the moss has been removed.
The same goes for pressure washing: too much pressure will cause as much damage to the roof as the moss itself. When moss starts to grow on the roof, it can eventually weaken asphalt or composite shingles and absorb water and hold it in place. Proper roof maintenance and cleaning will prevent the growth of moss and algae and will ensure the roof's long lifespan. Because of this, shingle manufacturers will not guarantee their product if moss or other vegetation is found growing on a roof.
After removing all the moss with a good roof cleaning, you can add copper or zinc strips to prevent the moss from growing back. But moss prefers shade, which is why houses with nearby trees that provide plenty of shade are generally at greater risk of continued moss growth. Fortunately, removing moss is a fairly simple task that you can do depending on the season or as needed to keep your roof airtight and looking good.