Crown coating
A crown coating bridges small cracks and moves with the concrete.
Masonry Repair
Chimney Waterproofing Folsom, PA
Chimney waterproofing in Folsom means treating repaired brick and mortar with a penetrating water repellent, not a coat of paint or sealer, to slow freeze-thaw damage and spalling. Dial (484) 470-7034 to talk with a local chimney sweep about waterproofing.
A chimney standing above the roof takes rain from every direction, and its brick and mortar absorb much of it. Absorbed water freezes and expands inside the masonry, causing spalling, and leaves behind white mineral deposits as it dries. A good water repellent cuts that absorption dramatically.
The product matters more than anything else. Chimney masonry needs a vapor-permeable water repellent, usually siloxane or silane based, that soaks into the brick and repels liquid water while letting water vapor out. Film-forming sealers and paint trap moisture behind them, which leads to peeling, spalling and crumbling.
A repellent only helps on sound masonry. Repellent cannot bridge cracks or open joints, so the crown, joints, flashing and cap are repaired before it goes on. Once repairs have cured, the repellent is applied to clean, dry masonry.
If the problem goes deeper than it first looked, a Folsom chimney sweep may also recommend chimney leak repair or chimney tuckpointing.
Need chimney waterproofing in Folsom? Call (484) 470-7034 and describe the problem to a chimney sweep who works in Folsom.
Call nowThe process
How chimney waterproofing works
A lasting treatment depends on sound masonry, a clean surface and the right product.
Check for damage
The masonry, crown and flashing are checked, since waterproofing does not replace repairs. Previous sealers or paint change the plan.
Fix the masonry
Cracked crowns, open joints, spalled brick and failed flashing are repaired before any repellent goes on. Repairs are given time to cure.
Wash the brick
The brick is cleaned of dirt, efflorescence, moss and loose material. A clean surface lets the product soak in properly.
Dry the masonry
The masonry is allowed to dry thoroughly before treatment. Rain right after application can reduce how well it works.
Saturate the brick
The breathable product is applied generously so it penetrates the masonry. The crown typically gets a separate flexible crown sealer.
Confirm it sheds water
After curing, the treated brick is checked to make sure rain runs off. The brick should keep its natural look.
What is included
Parts of chimney waterproofing
Brick waterproofing
A vapor-permeable repellent is applied to all exposed masonry without trapping moisture.
Cap installation
A cap is added or replaced over the flue so waterproofing covers the flue opening too.
Flashing check
Flashing is checked and resealed or repaired where needed so water does not get in at the roof line.
Efflorescence cleaning
The brick is cleaned of mineral deposits and growth without damaging the brick face.
Related service
Chimney Sealing Folsom, PA
Chimney sealing is a broader term that covers sealing every part of the chimney that lets water in, not just the brick. That includes a flexible coating on the crown, sealed or repaired flashing at the roof, a cap over the flue and a breathable repellent on the brick and mortar. Whatever goes on the brick needs to breathe.
For Folsom homeowners, the biggest risk with chimney sealing is the wrong product. Paint and non-breathable sealers hold water inside the brick, and winter freezing then breaks the brick apart. If something has already been applied, mention it so the technician can choose a compatible approach.
Local help
Chimney Waterproofing Near Me
Chimneys in Folsom see rain, snow and freeze-thaw cycles that test any masonry year after year. From Folsom out to neighboring communities such as Ridley Park, Prospect Park, Swarthmore and Morton, chimneys that were sealed with paint or non-breathable coatings often show the worst spalling, so a breathable repellent applied after repairs adds years to the masonry.
Need chimney waterproofing around Folsom? Call (484) 470-7034 for a Folsom chimney sweep who serves the towns around it too.
What the local climate does to a chimney
Cold winters keep fireplaces, wood stoves and oil burners working for half the year or more. Masonry takes the worst of it from the freeze and thaw cycle: water soaks into brick, mortar joints and the crown on a mild day, freezes overnight and expands, and each winter widens the cracks a little more. Nor'easters drive rain sideways into flashing and mortar that looked fine in summer. Most homeowners in Folsom, PA schedule a sweep in early fall, and a repair check after a hard winter.
Why call
Why fix it now
Smaller repairs
Small chimney problems caught early usually stay small repairs.
Familiar with local homes
Local sweeps see the same chimney types and weather wear across Folsom and nearby towns.
Clear next steps
Ask your questions before you agree to anything.
Chimney Waterproofing FAQ
Will waterproofing fix my leaking chimney?
Waterproofing helps if the brick itself is absorbing water, but most chimney leaks come from somewhere else. The usual leak sources need their own repairs. Finding and fixing the actual source comes first, and waterproofing is the final step.
How long does chimney waterproofing last?
A quality breathable repellent typically lasts several years, depending on the product and how exposed the chimney is. A simple sign is when water stops beading and starts soaking into the brick again. A yearly chimney inspection can check its condition.
Why would I waterproof my chimney?
The right treatment helps brick and mortar last longer by keeping rain from soaking in. It protects repaired masonry, but cannot stop water coming through cracks or failed flashing. For chimneys exposed to hard winters and wind-driven rain, it is often a worthwhile final step.
Will painting the chimney keep water out?
Painting a chimney to waterproof it usually causes more harm than good. Water still gets into the masonry through cracks and joints, and the paint keeps it from drying out. A breathable, vapor-permeable repellent is the right product for chimney masonry.
What is the best waterproofing for a chimney?
Breathable, penetrating repellents made for masonry are the right choice. They work below the surface, so the masonry can still breathe. Non-breathable sealers trap moisture and damage the brick.
More questions? Call (484) 470-7034
Often needed together
Chimney Leak Repair
Stopping chimney leaks at the source, whether the drip shows up in the attic, the ceiling or the firebox.
Learn moreChimney Tuckpointing
Replacing crumbling mortar between chimney bricks, in a color and joint style that blends with the old work.
Learn moreChimney Crown Repair
Fixing cracked, thin or crumbling chimney crowns, with a proper overhang and drip edge.
Learn moreChimney Cap Installation
Putting a sturdy cap on top of the chimney to keep out rain, animals, leaves and stray sparks.
Learn more
Looking for something else?
See all chimney servicesTalk to a Folsom chimney sweep about chimney waterproofing
Call (484) 470-7034 for a local chimney sweep in Folsom and nearby towns.
(484) 470-7034
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