Flashing check
The joint at the roof is inspected and sealed as part of a complete waterproofing job.
Masonry Repair
Chimney Waterproofing Itasca, IL
Chimney waterproofing in Itasca 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. Call (331) 301-3229 to reach a local chimney sweep.
Masonry acts like a hard sponge, absorbing rain through the brick faces and the mortar joints. That water freezes in cold weather, breaking brick faces off and loosening mortar, and it also carries salts to the surface as white efflorescence. Waterproofing reduces how much water the masonry absorbs in the first place.
Choosing the right product is the whole job. Breathable repellents work below the surface: rain beads off, but vapor from inside can still escape. Non-breathable coatings hold water in the masonry and cause the spalling they were supposed to prevent.
Waterproofing is the last step, not the first. Cracks, open mortar joints, a cracked crown, failed flashing and a missing cap all let in far more water than porous brick does, so those are repaired first. Once repairs have cured, the repellent is applied to clean, dry masonry.
Depending on what the sweep finds, chimney waterproofing in Itasca, IL can go hand in hand with chimney leak repair and chimney tuckpointing.
Looking for Itasca chimney waterproofing? Call (331) 301-3229 to reach a nearby chimney sweep.
Call nowThe process
What happens during chimney waterproofing
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.
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.
Wash the brick
The surface is washed and cleared of deposits. A clean surface lets the product soak in properly.
Let it dry
Repellent is applied only to dry brick, in dry weather. A dry forecast on both sides of the job gives the best results.
Saturate the brick
The repellent is sprayed or brushed on evenly, from the top of the chimney down. Crown and flashing details are finished with products made for them.
Check the result
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
Waterproofing work a chimney sweep handles
Brick waterproofing
Brick and mortar are treated with a breathable siloxane or silane repellent to slow freeze-thaw damage.
Masonry cleaning
The brick is cleaned of mineral deposits and growth so the repellent can penetrate.
Chimney caps
A damaged cap is replaced which protects the damper and flue tiles.
Crown sealing
The crown is coated with a flexible crown sealer so the top of the chimney stays watertight.
Related service
Chimney Sealing Itasca, IL
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. The common thread is that every product used on the masonry must let moisture escape.
In Itasca, 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. If the chimney already has paint or a sealer, ask the chimney sweep how it affects the plan, since it may need to wear off or be removed first.
Local help
Chimney Waterproofing Near Me
Around Itasca, waterproofing is often the last step after a chimney has been repointed or had its crown repaired. From Itasca out to neighboring communities such as Wood Dale, Elk Grove Village, Addison and Roselle, chimneys that were sealed with paint or non-breathable coatings often show the worst spalling, which is why the right product matters as much as the application.
Need chimney waterproofing around Itasca? Call (331) 301-3229 for an Itasca chimney sweep who serves the towns around it too.
Chimneys in this climate
Winters here are cold and long, with lake effect snow in many towns and deep cold snaps that can last for days. Furnaces, wood stoves and fireplaces run hard from fall to spring, so flues collect creosote fast and liners and crowns see a lot of heat and cold. Snow that piles up behind a chimney and melts slowly is a common source of leaks at the flashing. That is why Itasca chimney sweeps are busiest every September and October.
Why call
Why not wait
Smaller repairs
Small chimney problems caught early usually stay small repairs.
Local knowledge
Local sweeps see the same chimney types and weather wear across Itasca and nearby towns.
Know what happens next
Ask your questions before you agree to anything.
Chimney Waterproofing questions
Will waterproofing fix my leaking chimney?
Repellent only addresses water soaking through the brick face, while most leaks start at the crown, cap or flashing. 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.
Is chimney waterproofing worth it?
The right treatment helps brick and mortar last longer by keeping rain from soaking in. It is a protective step that only pays off once the chimney has been repaired. Chimneys that see a lot of weather benefit most.
Will painting the chimney keep water out?
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. Use a breathable water repellent instead.
What is the best waterproofing for a chimney?
Siloxane or silane water repellents designed for chimneys are the standard. They stop rain from soaking in but let trapped moisture out. Non-breathable sealers trap moisture and damage the brick.
How long does chimney waterproofing last?
A quality breathable repellent typically lasts several years, depending on the product and how exposed the chimney is. When rain starts darkening the brick again instead of beading, it is time to reapply. Checking it during an annual inspection keeps it on schedule.
More questions? Call (331) 301-3229
Other services that may help
Chimney Leak Repair
Finding and stopping water that gets in through the crown, cap, flashing or brick, before the water rots framing or ruins the flue.
Learn moreChimney Tuckpointing
Restoring the mortar joints that hold a chimney together, so rain stops getting in through the joints.
Learn moreChimney Crown Repair
Fixing cracked, thin or crumbling chimney crowns, before freeze-thaw damage spreads down the chimney.
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 servicesNeed chimney waterproofing in Itasca, IL?
Call (331) 301-3229 to talk to a chimney sweep serving Itasca, IL.
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