Waterproofing that protects chimney brick in Sunset
Clean, dry, sound masonry first, then a vapor-permeable repellent applied by the method on its data sheet.
- Owned and run locally
- Available for same-day service
- Fully licensed and insured
- Family owned and run
Clues that the brick needs a repellent or repairs
- Sandy mortar washing out of joints
- Damp patch on the chimney breast indoors
- Brick grit collecting on the roof below
- Uneven color across repaired sections
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Repairs, preparation and a named repellent
Siloxane and silane in plain terms
The repellents most used on brick are siloxanes and silanes, often blended. Both react with the silica in brick and mortar and change how the pores treat water. Water that would have soaked in beads up and runs off instead.
Siloxanes have larger molecules and suit most brick. Silanes are smaller and can reach further into dense surfaces. The right choice depends on the masonry in front of us and on the maker's data for each product. We name the product we propose and say why it fits your chimney.
Removing paint to treat the brick
If a chimney is painted and you would like a breathable repellent instead, the paint has to come off first. Paint removal from brick is a job with its own risks. Harsh methods can damage the face of the brick and leave it more absorbent than before.
We explain whether removal is realistic on your chimney and what method would suit it. It is priced as its own item, with a test on a small area first. In some cases, keeping and maintaining the paint is the better choice, and we say so.
An honest answer on treatment in Sunset
Not every chimney in Sunset needs waterproofing, and we will not pretend otherwise. Some need repairs and nothing more. Some need repairs and then a repellent. A few need no work at all for now.
The free inspection is how we find out which applies to yours. We explain what we saw on each face, what the top and the roof junction are doing and whether the brick is absorbing more water than it should. The recommendation follows from that, and the choice is yours.
What happens on the application day
On the application day, we confirm the forecast, check that the masonry is dry and set up access. Glass, metal, roofing and plants in range are covered or masked. Cars and furniture have been moved.
The product then goes on, face by face, by the method its data sheet sets. Overspray is dealt with as the work proceeds. When the product has set enough, coverings come off and the area is cleaned. We go through what was treated and hand over the written record.
What we look at before sealing a chimney in Sunset
- Mortar joints checked for gaps and softness
- Repairs listed ahead of the treatment
- Test area including patched sections
- Application method from the data sheet
Before you approve waterproofing in Sunset
Can a repellent close cracks in the brick or the joints?
It cannot. Penetrating repellents work inside the pores, and anything wider than a fine hairline is beyond them. Open joints are repointed, cracked units replaced and gaps sealed before treatment. We list those repairs separately, with the reason for each.
What about a chimney finished in stucco?
Some repellents list stucco as a suitable surface and others do not. Cracks, hollow areas and gaps around trim come first, because a treatment cannot bridge them. Where a different finish suits the stucco better, that work belongs to stucco repair, and we explain why.
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.
Proudly American
Local service. Careful repairs. A fireplace worth coming home to.
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Chimney & Fireplace Brands We Work With
DuraVent 
Olympia Chimney and Venting 
Copperfield Chimney Supply 
Rutland 
Heatilator 
Heat & Glo