Chimney Waterproofing
Brick is a sponge: it drinks wind-driven Texas rain all storm season, then freeze-thaw and salt deposits tear it apart from the inside. Waterproofing breaks that cycle — if it’s done with the right chemistry.
Breathable or nothing
We apply vapor-permeable siloxane-based repellents: water can’t get in, but moisture already in the masonry can still escape as vapor. The wrong product — a film-forming sealer — traps that moisture and accelerates the exact spalling it was meant to prevent. This distinction is most of what separates a professional job from a hardware-store weekend.
Efflorescence: the white warning
That white crust on your brick is dissolved salts that water carried through the masonry — proof of a moisture path. We clean it, then trace where the water enters (crown, joints, flashing, or surface) and treat the cause, because scrubbing the symptom without sealing the path means it returns with the next rain.
The Chimney Visit
- Vapor-permeable siloxane application
- Efflorescence removal and source tracing
- Crown and joint condition check before sealing
- 5–10 year protection cycle
- Never film-forming sealers on chimney brick
Common Questions
How long does waterproofing last?
Quality siloxane treatments protect for 5–10 years depending on exposure. We note the application date so your maintenance plan tracks the renewal.
Can you waterproof over the white stains?
No — sealing over efflorescence locks salts and moisture inside the brick. Clean first, fix the entry path, then seal. Order matters.
Ready When You Are
Specific appointment times, honest written quotes, and 0% financing on bigger jobs. One crew for your chimney and fireplace.