Chimney Waterproofing
A breathable waterproof sealant stops rain from soaking into your masonry while letting trapped moisture escape.
$285–$790
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The very nature of brick and mortar means they are inherently porous. With every Redmond downpour, water is driven deep into the masonry. Our characteristic winters then freeze this absorbed moisture, causing it to expand and ultimately fracture your chimney from within—a destructive process known as spalling. Our specialized, vapor-permeable waterproofing sealant creates an effective barrier that repels water intrusion, yet crucially allows the masonry to 'breathe' and release any trapped moisture. This service is both affordable and swift, representing one of the smartest investments you can make to safeguard a healthy chimney for many years to come.
Redmond's perpetual Pacific Northwest dampness makes waterproofing an exceptionally valuable preventive measure, offering critical protection against moisture-related damage in our consistently wet climate.
Book your free inspection
Pick a real open slot on our crew's calendar — takes about a minute.
No openings that day — please try another date.
What's included
Due to its porous composition, unsealed brick readily absorbs water with every rain. This moisture then succumbs to freezing temperatures, expands, and inevitably leads to destructive masonry spalling.
How it works
We clean the masonry and pre-treat any small cracks or joints.
A breathable sealant is applied over the full chimney exterior.
The masonry repels water but still releases trapped moisture.
Photos document full, even coverage.
Local & accountable
Why it matters
By their very design, brick and mortar are porous, allowing every Redmond rainstorm to drive moisture deep into the masonry. During our Pacific Northwest winters, this absorbed water freezes, expands, and consequently fractures the surface — a destructive freeze-thaw cycle that accounts for the majority of spalling. A high-quality, vapor-permeable water repellent acts as an impermeable shield against rain infiltration while simultaneously allowing any existing trapped moisture within the masonry to escape. This effectively preserves sound masonry for years, halting the seasonal deterioration process.
If any of these sound familiar, it's worth a free inspection:
See the difference
Before: porous, water-stained brick absorbing rain through the wet season. After: the same masonry treated with a breathable, vapor-permeable repellent. The specification matters — block liquid water in, let trapped moisture out — so the brick never holds the water that freeze events turn into cracks. Low cost, long extension of sound masonry's life.
Rain-saturated brick treated with a breathable repellent that sheds water, not vapor.
Representative example of a typical chimney waterproofing — not a specific customer job. We add photos of our own completed the Eastside projects as we finish them.
A representative scenario: a plateau home above Beaver Lake where the chimney's north face never fully dries between storms and has begun to flake after a run of hard freezes. Saturated brick plus freeze events is the standard spalling equation up here. Once the masonry checks out sound, a breathable water repellent goes on — liquid water blocked, vapor path open. Outcome: brick that sheds the wet season instead of absorbing it.
King County's Eastside
Licensed local crews, free on-site inspection and a written quote before any work. Book a real open slot on our calendar.
What you can count on
Licensed local crews, an honest written quote, and photos of every job. No call centers, no scare tactics.
Licensed and insured for Eastside home-improvement work. We carry what the state requires and stand behind every repair.
You get a clear written quote — with the deposit and balance shown up front — before any work begins. We recommend only what your chimney actually needs.
Every job is documented with before-and-after photos, so you can see exactly what was inspected and what was repaired — no guesswork.
Completed work comes with a written warranty document, so your repair is backed in writing — not just a handshake.
A clear deposit — never more than 50% — shown up front on your written quote, with the balance due only once the work is finished and you're satisfied.
The crew that quotes your job is the crew that does it — no call centers, no rotating subcontractors.
Related services
One local crew handles your whole chimney — here's what most homeowners pair with it.
By town
Service-area map — King County, WA. Map data © OpenStreetMap contributors.
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