The removal of organic growth from chimney systems is critical when it comes to preventing water damage and extending the serviceable life of chimney infrastructure. In the wet climate of the Pacific Northwest, this is especially pertinent.

During a recent inspection in Bellingham, I came across a chimney system with extensive organic growth. In this case, I recommended improving the system with a masonry sealant/water repellent, once organic growth had been removed.  There are differing industry opinions about waterproofing masonry elements; some contractors argue that applying a sealant can make the issue worse and lead to masonry damage, others say that it’s absolutely necessary to prevent water damage.  At a minimum, in my opinion, it’s imperative to keep moss growth maintained and prevent its growth on expensive masonry elements which can lead to costly repairs down the road.  

Check out the video below to see how one chimney sweep company uses a waterproofing agent to protect chimney systems. Thanks for watching!

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