A breathable sealant that keeps water from soaking into masonry in the first place — the cheapest way to prevent freeze-thaw damage before it starts.
Confirming the chimney is sound before sealing — never sealing over existing damage.
Dirt, efflorescence, and loose debris removed before any sealant is applied.
A vapor-permeable coating that keeps water out without trapping moisture in.
All four sides and the crown treated — not just the face that's visible from the yard.
Any hairline cracks addressed before the sealant goes on, not sealed over as-is.
A realistic estimate of when the sealant will need to be renewed, in writing.
Most older Twin Cities chimneys were never waterproofed at all, even though it's inexpensive protection.
Sealing fresh masonry protects the investment you just made in the repair.
A sign water is already moving through the masonry — worth sealing before it gets worse.
North and west-facing sides typically take the most weather exposure over a season.
Most sealants need periodic renewal to keep doing their job properly.
Chimney size and current condition affect the price more than the sealant itself.
No service call fee, no obligation. Written quote before any work begins.
Total surface area to clean and seal across all four sides and the crown.
Any repairs needed first factor into the overall estimate before sealing.
Taller or hard-to-reach chimneys add time to the application.
Different products carry different costs and reapplication intervals.
Tell us about your chimney's age and condition.
We check the masonry and recommend sealing if it's ready.
Surface cleaned, then breathable sealant applied to all sides.
We explain what to expect going forward and back it for three years.
It depends on chimney size, current masonry condition, and access. We give a free on-site estimate with a written quote before any work begins.
No. Waterproofing is preventive, not a repair. Cracks and deteriorated mortar need tuckpointing or crown repair first — sealing over existing damage just traps the problem rather than fixing it.
Paint and non-breathable coatings seal moisture in as well as out, which can actually accelerate freeze-thaw damage from the inside. Proper masonry waterproofing is vapor-permeable, letting trapped moisture escape while still blocking water from entering.
Most sealants last 5 to 10 years depending on the product and how much weather exposure the chimney gets. We give you a realistic timeline in writing after the application.
Only after that damage is addressed. We check masonry condition first and recommend any needed tuckpointing or crown repair before sealing, since waterproofing over damage doesn't solve the underlying problem.
It significantly slows it. Freeze-thaw damage happens when water gets into masonry, freezes, and expands. A breathable sealant keeps that water from getting in in the first place, which is why it's one of the most cost-effective preventive measures available.
Roughly 40 miles out from Minneapolis and St. Paul.
Free on-site estimate, written quote, no obligation. Next-day scheduling across the Twin Cities metro.
No commitment · No service call fee · Same-day available
