Masonry Chimney Waterproofing Services | Chimney Crickets
Protect Your Chimney with Expert Masonry Waterproofing
Water is the leading cause of masonry chimney damage—and it doesn’t take much to start a costly chain reaction. At Chimney Crickets, we offer professional chimney waterproofing services that shield your chimney from rain, snow, and freeze/thaw cycles.
From Saint Paul to Stillwater, Maple Grove, Eagan, Hudson, and dozens of cities across Minnesota and Wisconsin, we’ve helped homeowners protect their investment and avoid premature chimney rebuilds.

Why Chimney Waterproofing Is Essential
Without waterproofing, brick chimneys gradually absorb moisture. When that water freezes and expands, it causes bricks and mortar to crack, crumble, and spall. Over time, the entire structure weakens, risking internal leaks, damaged flashing, and chimney collapse.
Freeze/Thaw Damage
In our cold climate, fluctuating temperatures speed up brick deterioration. Moisture trapped in the masonry expands as it freezes, forcing cracks and breaking down the chimney’s integrity.
Internal Water Damage
Water doesn’t just harm the exterior. It seeps inside the chimney, corroding metal components, soaking insulation, and even damaging adjacent ceilings and walls.
Mold and Odor Issues
A damp chimney creates the perfect environment for mold and mildew. You may notice a musty smell in the fireplace room or staining on the masonry—both signs of water intrusion.

What’s Included in Our Chimney Waterproofing Service
Our technicians use vapor-permeable sealants that allow your chimney to breathe while keeping water out. We inspect and waterproof all vulnerable areas, including:
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Chimney crowns and caps
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Exterior brick and mortar
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Flashings and shoulder areas
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Masonry joints and mortar gaps
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Interior chimney liner (as needed)
This proactive solution helps prevent future repairs and extends the life of your chimney.
When to Waterproof Your Chimney
We recommend waterproofing every 10 years or after any chimney repair. It’s especially critical after masonry tuckpointing, crown repair, or a chimney rebuild. New homeowners should also schedule a waterproofing inspection, especially if the chimney shows any signs of previous water damage.
Serving Over 60 Communities Across MN & WI
Whether you’re in Northfield, Roseville, Woodbury, Coon Rapids, or New Richmond, the certified team at Chimney Crickets is here to help. Since 1987, we’ve protected homes with industry-leading chimney repair and waterproofing services.
📞 Call us today at (612) 352-9667 to protect your home from water damage.
Explore more services at chimneycrickets.net, including chimney leak repair, tuckpointing, chimney liners, and chimney caps.
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