Flashing sealing
The joint at the roof is inspected and sealed as part of a complete waterproofing job.
Masonry Repair
Chimney Waterproofing Mifflinburg, PA
A chimney sweep in Mifflinburg can waterproof a masonry chimney with a breathable, vapor-permeable repellent that keeps rain out while letting moisture escape, after cracks, joints and the crown are repaired. Dial (570) 816-1022 to talk with a local chimney sweep about waterproofing.
Brick and mortar are porous, and a chimney soaks up a surprising amount of water every time it rains. That water freezes in cold weather, breaking brick faces off and loosening mortar, and it also carries salts to the surface as white efflorescence. The goal of waterproofing is to keep that rain on the surface so it runs off.
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.
Waterproofing is the last step, not the first. 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.
Chimney Waterproofing is often paired with chimney leak repair and chimney tuckpointing, depending on the cause.
Looking for Mifflinburg chimney waterproofing? Call (570) 816-1022 to reach a nearby chimney sweep.
Call nowThe process
The waterproofing process
Waterproofing is only as good as the repairs and prep that come before it.
Inspect the chimney
The masonry, crown and flashing are checked, since waterproofing does not replace repairs. Any existing paint or sealer is noted, since it affects what can be applied.
Repair before sealing
Cracked crowns, open joints, spalled brick and failed flashing are repaired before any repellent goes on. Repairs are given time to cure.
Prep the surface
The surface is washed and cleared of deposits. Clean masonry absorbs the repellent evenly.
Let it dry
The masonry is allowed to dry thoroughly before treatment. A dry forecast on both sides of the job gives the best results.
Treat the masonry
The breathable product is applied generously so it penetrates the masonry. Crown and flashing details are finished with products made for them.
Water test
Once cured, water should bead on the brick instead of soaking in. A breathable repellent leaves no glossy coating on the brick.
What is included
What waterproofing covers
Chimney caps
A damaged cap is replaced which protects the damper and flue tiles.
Crown sealing
Hairline crown cracks are sealed to protect the most exposed part of the chimney.
Brick waterproofing
Brick and mortar are treated with a breathable siloxane or silane repellent without trapping moisture.
Masonry cleaning
The brick is cleaned of mineral deposits and growth so the repellent can penetrate.
Related service
Chimney Sealing Mifflinburg, PA
When people talk about sealing a chimney, they usually mean closing up all the ways water gets in. Each part gets a product made for it: crown coating for the crown, proper flashing and sealant at the roof, a cap for the flue and repellent for the brick. Breathability is the rule for every masonry product.
In Mifflinburg, one of the most common chimney mistakes is sealing brick with paint or a glossy sealer. Paint and non-breathable sealers hold water inside the brick, and winter freezing then breaks the brick apart. Ask what can be done about an existing coating before new products go on.
Local help
Chimney Waterproofing Near Me
Around Mifflinburg, waterproofing is often the last step after a chimney has been repointed or had its crown repaired. From Mifflinburg out to neighboring communities such as Lewisburg, Winfield, Milton and Selinsgrove, 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.
Searching for chimney waterproofing near me from Mifflinburg or Lewisburg, Winfield, Milton and Selinsgrove? Call (570) 816-1022 to talk to a chimney sweep who works in your part of town.
How the weather here affects chimneys around Mifflinburg
Winters here are long and cold, and the heating season usually runs from October well into April. The hardest thing on brick here is not the cold itself but the constant swing above and below freezing: 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. Wind driven rain from coastal storms finds any gap in flashing, too. Most homeowners in Mifflinburg, PA schedule a sweep in early fall, and a repair check after a hard winter.
Why call
Why not wait
Smaller repairs
A chimney problem fixed early rarely spreads to the masonry, the liner or the house.
Familiar with local homes
Chimney sweeps in Mifflinburg know the chimneys and fireplaces common in local homes.
Know what happens next
Ask the sweep about the cause, the options and the estimate before work starts.
Chimney Waterproofing questions
Why would I waterproof my chimney?
A vapor-permeable repellent keeps most rain out of the brick, protecting it from freeze-thaw damage. It is a protective step that only pays off once the chimney has been repaired. In wet, freezing climates, it adds real protection.
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. Avoid paint, acrylic sealers and any product that leaves a film, since they trap moisture and cause spalling.
How often should a chimney be waterproofed?
A quality breathable repellent typically lasts several years, depending on the product and how exposed the chimney is. Once water no longer beads on the surface, the treatment is wearing off. Annual inspections can track how well it is holding up.
Can I paint my chimney to waterproof it?
Paint traps moisture in the masonry, which is the opposite of what a chimney needs. The trapped moisture freezes and pushes the paint and brick face off. A breathable, vapor-permeable repellent is the right product for chimney masonry.
Does waterproofing stop a chimney leak?
Waterproofing helps if the brick itself is absorbing water, but most chimney leaks come from somewhere else. Most leaks come from cracks, open joints, the flashing or an uncapped flue. A water test can confirm where the leak starts before any treatment.
More questions? Call (570) 816-1022
Other services that may help
Chimney Leak Repair
Stopping chimney leaks at the source, before the water rots framing or ruins the flue.
Learn moreChimney Tuckpointing
Replacing crumbling mortar between chimney bricks, so rain stops getting in through the joints.
Learn moreChimney Crown Repair
Sealing cracked chimney crowns or rebuilding crumbling ones, so water stops soaking into the masonry from the top.
Learn moreChimney Cap Installation
Installing chimney caps with mesh sides to keep out rain, animals, leaves and stray sparks.
Learn more
Looking for something else?
See all chimney servicesTalk to a Mifflinburg chimney sweep about chimney waterproofing
Call now for Mifflinburg chimney waterproofing and help in the towns around it.
(570) 816-1022
Free to call. No forms to fill out.