Breathable waterproofing for chimney brick in Country Walk
Tell us how the brick behaves after rain, and we plan the assessment in Country Walk around it.
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Marks of water soaking into chimney brick
- Some faces drying slower than others
- Clear coating peeling off the brick
- Rain no longer beading on treated brick
- Soil or mulch piled against the base
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Keeping rain from soaking into chimney brick
A test area comes first
Product makers ask for a small test area on each surface before the whole chimney is treated. It shows how the masonry absorbs the product, whether the appearance changes and how much material the surface takes.
The test should include any earlier patches or repairs, because those can behave differently from the original brick. On a chimney in Country Walk, we apply the test with the same method we would use for the full job. If the result is not what you want, for example a darker look, we talk about it before going further.
When treatment may not be needed
A well-built chimney in sound condition may not need a repellent at all. Brick industry guidance notes that good materials, detailing and maintenance usually give water resistance without one. Treatment is most useful where brick is absorbing more water than it should.
We tell you honestly if we do not think treatment is worth it on your chimney in Country Walk. If the masonry is sound and the top and the roof junction are tight, the money may be better spent elsewhere or not at all. You decide, with the reasons in front of you.
How much product a chimney takes
The amount of repellent a chimney needs depends on the surface. Porous, rough brick takes more than dense, smooth brick. Mortar joints and earlier patches can take different amounts again. The test area gives a good guide.
We base the estimate on the faces to be treated and on the product's coverage for that kind of surface. We do not dilute or stretch a product to cover more. If the test shows the brick is thirstier than expected, we tell you before continuing, rather than applying less than it needs.
Rain falling down the flue
Treating the faces of a chimney does nothing for rain that falls straight down the flue. That water lands on the damper and firebox and can soak the masonry from the inside. A cap over the flue is what keeps it out.
We check the top as part of every waterproofing assessment. If the flue is open or the cap is damaged, we list it as its own item. There is little point protecting the faces while rain pours into the middle of the chimney.
Your free waterproofing inspection covers
- Repairs listed ahead of the treatment
- Named penetrating repellent and its data sheet
- Glass and skylights masked
- Base of an outside chimney checked
Questions about chimney waterproofing
Why does the treatment start with a test area?
Product makers ask for one on each surface. It shows how the brick absorbs the product, whether the look changes and how much material the faces take. The test includes patched areas, and you see the dried result before the whole chimney is treated.
Can you waterproof a chimney built from concrete block?
Sometimes. Block differs from brick, and some repellents that suit brick are not recommended for block. Where the block is painted or finished in stucco, a clear repellent may not fit at all. We match the product to the masonry or explain why none suits it.
Should a planned new roof go on before the chimney is treated?
Usually, yes. Finishing the roof and the chimney flashing first avoids roof work marking treated brick and overspray marking new roofing. Tell us your roof plans, and we schedule the treatment to follow, with the new roofing protected during application.
More Ways to Care for Your Fireplace
- Chimney Leak RepairFind the chimney water entry point and plan a repair before restoring the damaged finish.
- Chimney Crown RepairRepair the damaged chimney top with an approach matched to the crown and supporting masonry.
- Stone Chimney RepairRepair affected stone chimney surfaces with the supporting construction and visual match considered together.
- Chimney Chase Cover ReplacementReplace the chase top with a properly planned cover and clearly defined pipe connections.
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Chimney & Fireplace Brands We Work With
DuraVent 
Olympia Chimney and Venting 
Copperfield Chimney Supply 
Rutland 
Heatilator 
Heat & Glo