Repairs & protection — Connecticut

Masonry that sheds water, not absorbs it.

Brick and mortar are porous — they drink water, and Connecticut winters freeze what they drink. A breathable water-repellent treatment helps sound masonry stay sound. The key word is sound, and that's where we start.

Waterproofing the damage in doesn't work. If the masonry needs repair first, we'll show you why before treating anything.

Request a Waterproofing Assessment Call (475) 260-0922

Pick a date and arrival window online — we confirm before we arrive.

Licensed & insured — Connecticut Photo-documented findings Written scope before work starts
Water-repellent treatment being applied to the brick of a masonry chimney
Treatment being applied Illustrative
$149 assessment via inspection Credited toward the repair if you proceed — the masonry gets checked first, and any work is scoped in writing

What it is

A repellent that lets the masonry breathe

Chimney waterproofing is a breathable water-repellent treatment applied to the exterior masonry. It changes how the surface handles water: liquid water beads and sheds instead of soaking in.

The breathable part matters as much as the repellent part. Masonry always carries some moisture inside it, and a proper treatment lets that moisture vapor escape while keeping liquid water out.

That's the difference from paint or film-forming sealers, which can trap moisture inside the brick — where freeze-thaw cycles turn it into spalling. A coating that locks water in does the opposite of what you hired it to do.

Cracked brick and worn mortar joints on a masonry chimney
Fig. 01 — What water does to unprotected masonry Illustrative

When it helps — and when it can't

The honest limits of a repellent

Waterproofing is a good tool with a specific job. Here's where it earns its keep, and where it doesn't.

Helps sound masonry resist absorption and freeze-thawLess water in the brick means less water freezing in the brick over a Connecticut winter
Helps after repointing or crown work is completeA common final step — protecting the repair you just paid for
Can't fix failed mortar, cracked crowns, or flashing leaksThose are repairs, not treatments — they need to come first, and we'll show you if they do
Reapplication is eventually neededIt's maintenance, not a permanent coating — weather wears every treatment down over time

Symptoms

Signs water is getting into the masonry

These signs say water is moving through the brick — the assessment establishes where it's coming from and whether repair or treatment is the right response.

White powdery staining on the brickEfflorescence — minerals left behind as moisture moves through the masonry and evaporates.
Moisture in masonry
Dark saturation after rainBrick that stays visibly wet long after the weather clears is absorbing water instead of shedding it.
Absorption
Spalling brick faces in springWater that froze inside the brick over winter pops the faces off as the seasons turn.
Freeze-thaw
Damp smell in the fireplaceMoisture making it all the way to the firebox has found a persistent path through the system.
Water entry

Related services

Often booked alongside

Masonry Repair Crown Repair Flashing Repair

FAQ

Waterproofing questions

Will waterproofing stop my chimney leak? +

It depends entirely on where the water is getting in. Waterproofing helps masonry that's absorbing water through its surface. If the water is entering through a cracked crown, failed flashing, or open mortar joints, treatment won't fix that — those need repair first, and we'll show you the photos that say which situation you have before proposing anything.

Is waterproofing the same as sealing or painting the chimney? +

No, and the difference matters. A breathable water-repellent treatment keeps liquid water out while letting moisture vapor escape from inside the masonry. Paint and film-forming sealers can trap that moisture in the brick — where Connecticut's freeze-thaw cycles go to work on it. Trapping moisture inside masonry is the opposite of protecting it.

How long does the treatment last? +

Honestly: it's maintenance, not a permanent coating, and reapplication is eventually needed. How soon depends on your chimney's exposure — sun, wind, and weather wear treatments at different rates on different chimneys — so we won't quote you a number of years we can't stand behind. What we can do is tell you what we see when we look at it.

Does the masonry need to be repaired before waterproofing? +

If it's damaged, yes. Treating over failed mortar or cracked brick locks the problem in rather than keeping water out. The right order is repair first — repointing, crown work, whatever the photos show is needed — then treat the sound masonry so it stays that way. If your chimney needs that first step, you'll see why before anything gets applied.

How do I book a waterproofing assessment? +

Book online: choose the service that fits, pick a preferred date and arrival window, and send the request. We review every request and confirm the window with you before the visit.

Next step

Protect masonry that's worth protecting.

An honest look at the masonry first — then a treatment that keeps water out, or the repair that has to come before it.

Request a Waterproofing Assessment Call (475) 260-0922
CallRequest a Waterproofing Assessment