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5657 Wilkinson Ave, Valley Village, CA 91607Sun–Fri 7AM–9PM · Sat closed
(818) 722-9233
Chimney & Fireplace

Chimney Waterproofing in Los Angeles, CA

Brick and mortar absorb water. Los Angeles does not see many storms, but the ones it gets are heavy, and an atmospheric river can soak a chimney for days. Water that gets into the masonry weakens mortar, rusts dampers and caps from the inside and eventually finds its way to a ceiling.

What to Know About Chimney Waterproofing in Los Angeles

Waterproofing slows that down. A breathable repellent lets the brick shed rain while still letting trapped moisture escape, which is the balance masonry needs.

Chimney waterproofing is quoted after an inspection, based on the size of the chimney and any repairs needed first.

We provide chimney waterproofing across Los Angeles from our office in Valley Village. The city pages below explain what is typical in each area.

What Waterproofing Involves

The chimney is inspected and any repairs, such as cracked crowns or failing mortar, are done first, because waterproofing over damage only hides it. The masonry is cleaned, the crown is sealed with a flexible crown coating, and a vapor-permeable repellent is applied to the brick or stone faces.

We check the flashing at the same time, because a leak at the roofline will not be fixed by treating the brick.

Why It Has to Breathe

Ordinary paint or clear sealers form a film that traps moisture inside the brick, which leads to spalling. Masonry repellents designed for chimneys penetrate the surface and repel liquid water while allowing vapor to pass out.

Is Waterproofing Worth It in Los Angeles?

For a sound chimney in good repair, it is a modest preventive cost that lasts several years. For a chimney that is already leaking, the leak needs to be found and repaired first. We will tell you which applies to yours.

Direct answer · pricing

Chimney Waterproofing in Los Angeles is priced after a free estimate. Chimney waterproofing is quoted after an inspection, based on the size of the chimney and any repairs needed first.

Water repellent applicationBreathable, vapor-permeable
Free estimate
Crown sealingFlexible crown coating
Free estimate
Repairs before waterproofingMortar and crown work from $199
From $199

Signs You Need Chimney Waterproofing in Los Angeles

Water stains on a ceiling or wall near the chimney after rain
White staining (efflorescence) on the brick
Brick faces flaking or popping off
A musty smell from the fireplace after storms
Rust on the damper or inside the firebox
Dark, damp-looking patches on the chimney after rain

How Chimney Waterproofing Works

Every chimney waterproofing job follows the same steps, and you get photos of the work.

  1. InspectWe check the crown, brick, mortar and flashing for damage and leaks.
  2. Repair firstAny cracks or failing mortar are repaired before waterproofing.
  3. CleanThe masonry surface is cleaned so the repellent can penetrate.
  4. Seal and treatThe crown is sealed and the breathable repellent is applied.
  5. ReportYou get photos and notes on the work and the expected service life.

Chimney Waterproofing Questions in Los Angeles

How much does chimney waterproofing cost?
It depends on the chimney size and whether repairs are needed first. Call (818) 722-9233 for a free estimate.
How long does chimney waterproofing last?
A quality breathable repellent typically lasts several years before it needs reapplying.
Can I paint my chimney to waterproof it?
No. Paint traps moisture in the brick and leads to spalling.
Will waterproofing stop an existing leak?
Only if the leak is through the brick. Leaks at the crown or flashing need repair first.
Does waterproofing change how the chimney looks?
A proper masonry repellent is clear and does not noticeably change the appearance.

Book Chimney Waterproofing in Los Angeles

Call for a price range on the phone, or send a request and we will confirm a time window.

(818) 722-9233
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