What’s Growing in Your Chimney?

Inside Your Chimney: Algae and Plant Growth in High-Moisture Areas

Do you spy algae growing on your roof or chimney masonry? This is more serious than the cosmetic concern it may appear to be. For starters, algae, moss, lichen, or mold on your chimney signifies the presence of moisture in and on your chimney, which is one place where water should never be.

Water can create all sorts of problems for your chimney - A major one is algae growth. Make sure to waterproof your chimney.

Water can create all sorts of problems for your chimney – A major one is algae growth. Make sure to waterproof your chimney.

In addition, there are some varieties of algae—one in particular known as “gloeocapsa magma”—that can literally eat away at roof shingles, limestone, and mortar, degrading your chimney’s integrity. And moss and lichen, which can take root on your roof and chimney, are thick enough so that when they freeze they will hold water against your roof for long periods of time. At Pristine Chimney Sweeps we can clean the algae and any other plantlife off your chimney and waterproof it to protect it from the formation of any more damaging green stuff.

What Is Algae?

Algae is a plant or plant-like organism of any of several phyla, divisions, or classes of chiefly aquatic origin. Algae can be green, yellow-green, brown, or red. Algae, moss, and lichen thrive in moist, shady environments—hello, Seattle! After all, this is a plant that grows under water. So what’s this aquatic plant doing on your roof or chimney? Probably thriving—all while destroying your roof and chimney.

Why Algae Has No Place On Your Chimney

Besides the fact that algae leaves unsightly stains on your chimney, the presence of algae indicates that water has intruded into your chimney’s brick and mortar, after which point it can get inside your chimney and inside your home, where it can wreak havoc on your ceilings, walls, and floors. Water damage to a chimney also manifests itself in the form of rusty chimney components, compromised liners, and crumbling masonry.

How We Remove Algae from Chimneys

All of our consultations with clients start with a thorough video inspection of the chimney. Before we treat a sick chimney, we have to look at it completely to determine the most efficient and cost effective way to make it well again.

When it comes to algae removal, in addition to power-washing your chimney, the CSIA certified technicians at Pristine Sweeps will seal up all cracks and gaps in your chimney and finally apply a water repellant specially designed to keep water out of your chimney for the long haul.

Have questions about algae on your chimney or chimney waterproofing? Contact us today.



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