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Are there any any tricks out there to control the moss on my roof?

In case we haven’t noticed, we live in a rain forest.  Seriously!  UBC has a room dedicated to it:

Whenever you get our rain, with our socked in clouds, this creates the perfect enviroment for algae, moss and other plants to grow anywhere.

I’m not a scientist, but obviously the sun somehow inhibits or slows down moss growth because the worst areas on any house or building is always the norths sides – the sides that the sun doesn’t reach in the Greater Vancouver area.

When we are at a customers house usually doing gutter cleaning or gutter repairs, customers ask me all the time about roof cleaning?  Do we do it?  If you don’t, can we suggest a good roof cleaning company?  There are always a few students out there willing to powerwash a cedar roof, and a couple roof cleaning companies that pop up over the years that might even treat a roof, but typically non of them last.

Over the years, I have tried a few things to clean a roof – sometimes they work, some times they don’t.  One of the best tips I ever received for roof cleaning was from a customer who calls up one day and asks if we can come to his house and spread some Tide with Bleach (powder) on his roof?  I didn’t know how to respond.

He was from Saskatchewan, and said everyone was doing it.  The actual bleach in the powder would activate with the rain and kill the moss and green algae growth on your roof!  We tried it and what do you know – it worked!

Since then, we’ve found you can actually easily obtain eco-friendly actual bleach powder that works a little better.  Try this tip next time you see some moss on your roof and do it yourself to save a few bucks.

Of course you can always call us (shamless plug) as we have slowly mastered the art of roof cleaning.

As usual, thanks for reading, and I always appreciate feedback.

Troy Thompson


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Had a job in a sketchy part of town, for a dirty and difficult clean. The people at North Shore were very helpful, the technician did a great job, and we are very happy with the way it all turned out. Everything was handled professionally and skillfully. I'm thrilled with the result. Will happily recommend them to anyone
Daniel Jones
Daniel Jones
19:55 14 Aug 18
Quick response, easy to deal with and quality work. I highly recommend them. They did a great job!
James Palmer
James Palmer
15:05 14 Sep 18
They did a great job for the downpipes replacement, it looks awesome and professional. There were a small issues for one of the downpipes, they came back the next day and changed a new one for me after I called them. The price is reasonable and the material is a great quality, the installers are their own guys, not subcontract. I am happy about my experience.
Mingwei Liu
Mingwei Liu
06:18 09 Jun 18
North Shore has taken care of a great deal of our maintenance and they always do a great job. Service is fantastic and there have never been any issues with them returning if we needed a touch up after a service. Pricing is always fair and scheduling always on point.
Jooles Dub
Jooles Dub
00:42 04 Jul 18
I have been using this service on behalf of our townhouse complex in Burnaby for the past 3 years. Roof cleaning, gutter repair, and other roofline repairs and maintenance have all been done promptly, quickly and carefully. It was worth it to search for this company and this result, as we have been treated poorly by other more local companies. Prices are reasonable despite the extra travel they do to get here. Invoices and responses to requests are always reliable.
Eric Mulholland
Eric Mulholland
16:27 20 Sep 18
I have switched to North Shore Home Services because of the over the top customer service. Everyone from the men who came to do the repairs to the man in charge of customer service was as professional and understanding as is possible. Best of all, they fixed the leak!! I will recommend these people and call them whenever is necessary.
22:02 27 Dec 18