How to Kill Moss Growth on Your Roof

Cedar shingle moss growth

How to Prevent Moss Growth in Roofs?

Moss on roofs could be big trouble if not removed in time. If you happen to live in a region where damp and cold climates are a constant, then you surely know the problems unwanted growth on your roof can cause. Let’s Clarify more about How To Kill Moss Growth On Your Roof?.

If you wish to keep your roofs safe from moss, algae and lichen let’s understand these plants better and the measures you can take to avoid or eradicate moss on roofs.

Why Does Moss Grow on Roofs?

Moss grows in many places and our roofs just happen to be one of those. The reason why moss prefers to grow on rooftops is mainly a combination of two things; Moisture and Organic debris such as fallen leaves, twigs, and nuts on the roof. Moreover, the lack of sunlight is a boon for the growth of moss.

The more the amount of water and debris accumulated on your rooftop, the greater are the chances of moss growth. If your roof is well shaded by trees, it likely prevents evaporation of the moisture and creates a suitable atmosphere for moss growth.

Many-a-times some roofs support the growth of moss that goes unseen for a long period. As moss, algae, and lichen prefer to grow under the shingles of your roof as this is where the moisture is trapped.

Moss, algae, and lichen grow on your roofs because your roof offers everything these single cellular plants need to thrive.

Why Is Moss Bad for Your Roof?

Yes! Moss is extremely bad as it damages the roof. For some types of low-sloped roofs, it can be an immediate problem. As moss can grow on these roofs just in a couple of weeks. In other types of roofs, it takes months for moss to grow to a detectable height.

If left unattended, moss can grow a few inches tall and embed itself under the shingles of your roof, or in small cracks, and loosen the granular surface. This traps the excess moisture against the roof which in turn renders all the roofing products useless. This trapped moisture will then lead to slow but gradual decaying of your roof.

So, if you have moss on the roof, your house may look like it’s straight out of a Disney movie. But these tiny plants can cause serious damage to your roof.

How to Combat Moss Growing on Roofs?


Clearing trees: If your roof is prone to moss growth, it’s best to apply the preventive measures beforehand. The first thing that supports moss growth is shade. So, if you have trees lining up around your house it’s best to get rid of them. Now, this method could cost you a bit, but it’s a long-term fix as it would allow sunlight to hit your roof and discourage moss growth.

DIY Hacks: You could get a bit creative and a lot budget-friendly by using baking soda, baking powder, salt, soap, and vinegar to curb the growth of moss on your roof. An equal mixture of household bleach with water was a good fix too. But all DIY methods may save you some bucks, but they need to be done regularly to prevent moss on roofs.

Plus, these hacks need to be performed when the sky is comparatively clear and there would be no rains for at least a week, for these methods to take effect.

Roof Maintenance: This preventive method needs no separate introduction, scheduling regular roof maintenance will save you a lot of effort. It will not just keep the moss on the roof in check but inspect your roof for any other damage as well.


Professional Roofing Service: If the moss on your roof is grown out of hand it’s best to contact a roofing service. Their professional methods are best to get rid of accumulated moss in the roof.


·       If you are planning to try any DIY methods to remove moss on roofs it is best to practice some precautions. Wearing a harness and using ropes while you access your roof. At times the sloped roofs could be extremely slippery and extremely dangerous. So, it’s best to call professional help.

·       Do not scrub or pressure wash your granular roofs as these granules are meant to deflect the UV rays. If you damage these granules, you are due for a roof replacement way quicker than you think.

·       Lastly, don’t overuse the chemicals, as most of them are not only hazardous for your health but the roof as well. Overuse of these acids may decay your roof from within.

Blackwater Roofing.

If you happen to live in the GVRD Blackwater roofing could help you maintain, repair, and replace your roofs. Also We have experienced professionals on our team, who have decades of experience in the roofing industry. And We could help with roofing-related issues which are as minor as repairing a leak and as big as replacing your entire roof. We offer an affordable and easy diagnosis for your roofs, without causing much inconvenience in the lives of the residents.

So We also offer a FREE no-obligation inspection. Call us soon to get yours!



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