Chimney Waterproofing
Vapor-permeable sealants that keep water out of masonry without trapping moisture inside.
Masonry is porous, and water is responsible for more chimney damage over time than fire or heat. Waterproofing treatments are applied to the exterior masonry to repel water while still allowing the brick to breathe — using the wrong sealant (a non-breathable one) can trap moisture and make damage worse.
This is typically paired with crown and flashing repair, since all three address the same underlying issue: keeping water out of the structure.
Signs You May Need This Service
- Visible efflorescence (white staining) on the brick
- A chimney that's due for its first waterproofing treatment (5+ years old)
- After completing masonry repairs, to protect the new work
How It Works
- Clean the masonry surface thoroughly
- Apply a vapor-permeable, water-repellent sealant
- Reapply on the manufacturer's recommended schedule (typically every 5-10 years)
Frequently Asked Questions
Will waterproofing trap moisture inside the chimney?
Not if the correct vapor-permeable sealant is used — this is the whole point of using a purpose-made masonry water repellent instead of a generic sealant.
How long does waterproofing last?
Most treatments are rated for 5-10 years, depending on product and exposure.
Waterproofing Available In
Ready to schedule service?
Call now or request a quote online — we'll follow up to confirm details and scheduling.