Waterproofing that protects chimney brick in Franklin Park
Earlier coatings are identified and tested, so a new product does not end up working against an old one.
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Marks of water soaking into chimney brick
- Chalky deposits drying on the brick face
- Moss or green growth on the masonry
- Glossy patches from an earlier coating
- Uneven color across repaired sections
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Keeping rain from soaking into chimney brick
Broken and flaking brick goes first
Brick with cracked or flaking faces lets water straight in, and a repellent cannot seal it. Brick industry guidance lists replacing such units among the repairs that should come before any clear coating.
We mark the damaged bricks during the inspection and list their replacement as a separate item. The treatment is then planned for the sound masonry that remains. If most of a face is damaged, we say so, because a larger masonry repair changes whether treatment makes sense at all.
Choosing a product with a track record
Brick industry guidance recommends products that have performed well on similar brick, in similar exposure, over a meaningful period. A new or untested product may look fine at first and behave differently later.
We use products whose makers publish full technical data, including the surfaces they suit and their limits. Our estimate names the product, and its data sheet is yours to read. If you have a product in mind, tell us, and we will explain whether it suits your chimney.
Metal parts at the chimney
A chimney carries metal: the cap, the flashing, straps and fasteners. A masonry repellent is not made for metal, and overspray can leave residue on it. Some metal surfaces are painted, and residue can mark the paint too.
We mask metal parts close to the faces being treated. If a metal part is rusting or loose, we note it, because a failing cap or flashing will need its own repair. The treatment is applied to the masonry only, as the product data intends.
Telling us about past leaks
Any history of leaks is useful when planning waterproofing. It tells us where water has got in before and whether those paths were repaired. A treatment is only worth applying once they are closed.
Tell us about stains, drips or damp patches you have seen, even if they stopped long ago. Mention any repairs made at the time. We check those areas closely. If an old path looks open again, it goes on the estimate as a repair ahead of treatment.
Written into a waterproofing proposal
- Brick faces checked for flaking or cracks
- Mortar joints checked for gaps and softness
- Hairline separations along joint edges
- Roofing and metal parts covered
Before you approve waterproofing in Franklin Park
Do repairs have to be finished before the treatment goes on?
Yes. Brick industry guidance puts repairs first, and product data asks for sealant joints to be in place and cured and for the top to be watertight. New mortar also needs its curing time. We set out that order in the estimate so nothing is rushed.
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.
Does a metal flue inside a framed box need waterproofing?
Not with a masonry repellent. A framed chase has no brick to treat. Its water problems come from the cover at the top, the collar around the pipe and the siding or stucco joints, and we look at those instead.
More Ways to Care for Your Fireplace
- Gas Fireplace VentingAssess and repair the gas fireplace vent arrangement using components suited to the identified system.
- Chimney Flue RepairAssess repairs to damaged existing flue linings and distinguish them from a new liner installation.
- Wood-Burning Fireplace Insert InstallationFit a wood-burning insert after assessing its host fireplace and full connection requirements.
- Chimney RebuildRebuild the affected chimney section with the retained structure, roof connection and passage included in the plan.
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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