• 30390 Southwest Rogue Lane unit 3010 Wilsonville, OR 97070
  • (503) 954-0726
  • clayton@metrochimneypdx.com


Guarding Against Chimney Damage Caused by Moss

Moss poses a significant threat to your chimney’s structural integrity. Both the chimney crown and mortar joints are vulnerable to the invasive roots of moss, which can dig into the mortar and cause extensive damage, as vividly depicted in the images below.



The Devastating Impact of Unchecked Moss Growth

When left unaddressed, moss can wreak havoc on your chimney, leading to the complete destruction of both the crown and mortar joints. This unchecked growth can undermine your chimney’s structural integrity, as starkly illustrated in the images below.



Protecting Your Chimney from Moss Damage

When moss damage affects your chimney’s structural integrity, two primary solutions are available: tuck-pointing or complete chimney reconstruction, as illustrated in the image on the right above. Once the damage extends to the crown, it necessitates the removal of the damaged crown and the installation of a new one.

To prevent such extensive damage, reach out to Metro Chimney. We specialize in moss removal, ensuring the complete eradication of moss and its roots. After removal, we recommend safeguarding your chimney by applying a waterproofing product specially designed for chimneys. This product comes with a manufacturer-backed 10-year warranty.

It’s worth noting that moss removal not only halts further damage but also addresses the pores created over time by rainwater erosion. Moss absorbs water, and once removed, the absence of moss can potentially lead to chimney leaks. To counteract this, all our moss removal services are accompanied by a chimney waterproofing bid to seal and protect your chimney from potential leaks.

We strongly recommend chimney waterproofing following moss removal. Contact us for more details and explore the before-and-after images below to witness the results of our chimney moss removal services.





A Design Prone to Failures

Step flashing earned its name due to its resemblance to a set of steps running alongside a chimney. At Metro Chimney, we typically advise against the installation of step flashing due to its susceptibility to various factors that can lead to failure. This includes the risk of wind or service personnel on your roof inadvertently pulling up the step flashing, rendering it ineffective, as illustrated below.

While we can certainly accommodate your preference for visual continuity, we consider step flashing to be an inferior design choice when compared to the reliability of One-Piece Flashing.





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