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Mill Bay/Duncan

250.743.3306

Ladysmith/Chemainus

250.324.3343

Moss Services

A man brushing moss off of a roof

Why is moss harmful to my roof?

Moss itself does not produce any dangerous molds or spores and lacks the mass to physically damage your home. So why should it be treated or removed? The danger of moss lies in its ability to retain moisture. Typically, when rainwater or humidity settles on a roof, it air dries before it can linger for too long. When moss covers the roof, however, it can trap the moisture, preventing it from properly evaporating. When excess moss growth causes moisture to remain trapped on a roof, the shingles themselves can weaken and rot over time. Ignoring the moss on your roof may significantly shorten the lifespan of your roof. But don’t panic! Were here to help! Call use today for a free quote. We have a verity of options to suit all roof types and budgets.

A mossy roof

Moss Services

Moss Treatments

We offer two options for moss treatments; a spray treatment or a powder treatment. Both of these treatments are equally effective, and are guaranteed for one year. Treatment type will be determined by the type of roof. After treatment, the moss will begin to die, and you’ll notice a colour change within three to six weeks. Moss treatments kill the moss, however, it do not dissolve or remove it. Over time, it will likely come off on its own.

Moss Removal

Moss removal is done with a stiff brush and is more of a sweep than a scrub. We get as much moss off the roof as possible without damaging the shingles. Any bits of moss that remain are then treated. It's important to be aware that any kind of physical removal of moss from a roof is not ideal, and even with the most careful efforts, it is likely that granules from the shingles will come off in the process. Moss removals are only recommended if the moss has been left to grow for years, and has become too large to simply treat.  

Retreatment is recommended every few years to keep the moss from coming back.