FranklinChimney
Chimney waterproofing sealant application
Custom QuoteFinancing available — $69 inspection fee credited toward service

Stop Water From Destroying Your Chimney Waterproofing, 10-Yr Warranty

Vapor-permeable sealant that blocks rain and snow while letting trapped moisture escape. Protects your masonry from freeze-thaw damage for years. $69 inspection fee credited toward service.

Open now — Sweeping all over Philly
4.9 from 237+ reviews Verified Reviews
CSIA Certified BBB A+ $2M Insured
What's Included

What You Get

Everything below is part of one written quote. No hidden fees. No add-ons.

Full exterior chimney and masonry assessment
Minor mortar repair before sealing (if needed)
Application of vapor-permeable waterproofing sealant
Flashing inspection and sealing
Crown sealant application
10-year warranty on waterproofing treatment

Pick a Time. We'll Be There.

No-obligation estimate
Confirmed in 15 min
Ratedby 237+ Philly homeowners

Choose your service, pick a time, and we’ll send you a confirmation within 15 minutes. No credit card required.

  • No-obligation estimate — see the cost first
  • No hidden fees — price locked before work starts
  • Same-day & evening slots available
  • CSIA-certified & $2M insured
Takes 90 seconds — No obligationRatedby 237+ Philly homeowners
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June 2026
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Chimney Inspection
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Don’t Ignore This

Why Philadelphia Homeowners Can’t Afford to Wait

Water is the #1 enemy of Philadelphia chimneys. Rain, snow, and ice penetrate porous brick and mortar, then freeze and expand — cracking masonry from the inside. Waterproofing creates an invisible barrier that stops water penetration while allowing internal moisture to escape. It's the single best way to extend your chimney's lifespan and prevent costly structural repairs.

#1 Enemy

Water Destroys Chimneys

Rain, snow, and ice penetrate porous brick and mortar, then freeze and expand — cracking masonry from the inside out.

10 Years

Waterproofing Warranty

Our vapor-permeable sealant blocks water while letting moisture escape. Protected for 10 full years.

$15K+

In Prevented Damage

Waterproofing typically pays for itself in the first year by preventing freeze-thaw structural damage.

Every week you wait, the damage gets worse — and the repair gets more expensive.

Get My Waterproofing Estimate
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What Homeowners Say

See Why 237+ Philly Homeowners
Rated Us 4.9 Stars

4.9 from 237 reviews

Brown stains were spreading across my living room wall every time it rained hard. Turns out water was wicking through the chimney masonry. They applied a breathable sealant to the entire exterior. Two months and several storms later — not a single new stain.

Maria V.
Maria V.
Spring Garden, Philadelphia
2 weeks ago

Damp musty smell in the family room every time it rained. We thought it was the basement. Turns out moisture was coming through the chimney masonry above. Franklin waterproofed the exterior and the smell is gone. Should've looked up sooner — literally.

Theresa M.
Theresa M.
Somerton, Philadelphia
5 days ago

After the nor'easter knocked some bricks loose, I expected to wait weeks for a mason. They were out in two days, matched the existing mortar color perfectly, and even sealed the crown while they were up there. Top-notch craftsmanship.

Janet H.
Janet H.
Germantown, Philadelphia
1 week ago

Had spalling bricks repaired on the chimney and Franklin recommended waterproofing as part of the project. Smart call — they said the new mortar needs protection just like the old stuff. One crew did both jobs in the same visit. Efficient and cost-effective.

Omar D.
Omar D.
Cedar Park, Philadelphia
2 weeks ago

After the freeze-thaw cycle last winter I had mortar crumbling off my chimney in chunks. They explained how water gets in the pores, freezes, and blows the mortar apart over time. Repointed the damaged joints and waterproofed the whole thing. Said it should hold 8-10 years now.

George H.
George H.
Havertown, PA
1 month ago

Efflorescence and a damp interior wall after storms. Franklin confirmed with a moisture meter, sealed the exterior with a breathable product, and the wall has been dry ever since. They never pushed anything I didn't need. Straightforward and honest.

W
Wendy Z.
Bella Vista, Philadelphia
5 weeks ago

Water was pooling at the base of the chimney where it meets the roof. The mortar at the bottom three courses was turning to sand. They repointed the damaged area, sealed the chimney-to-roof transition, and waterproofed the entire stack. Problem solved.

Lorraine K.
Lorraine K.
Clifton Heights, PA
1 month ago

Stains on the ceiling near the chimney had me worried about the roof, but it was the masonry absorbing water. Franklin sealed the exterior and the staining stopped completely. They diagnosed it correctly when another company wanted to redo my roof.

J
Jerry L.
Spring Garden, Philadelphia
1 week ago

After repointing my chimney they sealed it the same day so the fresh mortar wouldn't take on water. Smart sequencing and great communication. Two heavy rains since and everything's dry. Honest crew that explained the whole process clearly.

K
Kathy R.
Mt. Airy, Philadelphia
4 weeks ago

Dampness kept showing up on the interior wall behind the chimney after heavy rain. Franklin tested the masonry with a moisture meter, confirmed it was soaking up water, and applied a breathable sealant. Three storms since and completely dry inside.

M
Maria L.
Fishtown, Philadelphia
10 days ago

Our chimney faces north and takes a beating every winter. After seeing what freeze-thaw did to my neighbor's chimney — $9,000 in repairs — I decided to be proactive. Franklin waterproofed mine for a fraction of that. Five-year warranty. Money well spent.

Ruth P.
Ruth P.
Springfield, PA
4 weeks ago

Our historic chimney was soaking up rain and the plaster inside was starting to bubble. Franklin waterproofed the masonry with a sealant safe for old brick. No more moisture coming through. Careful, knowledgeable, and respectful of the building's age.

S
Sue Z.
Washington Square, Philadelphia
2 weeks ago

Brown stains kept spreading on my living room wall after every hard rain. Turned out water was wicking through the chimney masonry. Franklin applied a breathable sealant to the whole exterior. Several storms later and not a single new stain. Fixed for good.

C
Connie A.
Chestnut Hill, Philadelphia
2 weeks ago

Damp musty smell in the family room after every rain — we blamed the basement for years. It was moisture coming through the chimney masonry above. Franklin waterproofed the exterior and the smell is gone. Should've looked up sooner, literally.

T
Tony M.
South Philadelphia
5 days ago

White streaks running down my chimney for years. Turns out that's called efflorescence and it means water is pulling minerals through the brick. Franklin cleaned the staining, repaired a few soft spots, and sealed everything. Chimney actually looks better now than when we bought the house.

Stephanie B.
Stephanie B.
Drexel Hill, PA
4 weeks ago

Our 1790s building had never been waterproofed and the masonry was getting soft. Franklin treated the whole stack with a breathable sealant that won't trap moisture in the old brick. Respectful of the historic material and clearly explained why it mattered.

J
Jerry S.
Society Hill, Philadelphia
6 weeks ago

After last winter's freeze-thaw, mortar was crumbling off the chimney in chunks. They explained how water gets into the pores, freezes, and blows the mortar apart. Repointed the damage and waterproofed the whole thing. Said it should hold 8–10 years.

P
Pete P.
Manayunk, Philadelphia
1 month ago

They showed me video footage from inside my chimney — I could see the cracks they were talking about. No pressure, just facts. The repair was done in one day and they cleaned up everything. First contractor I've ever tipped.

Margaret T.
Margaret T.
Chestnut Hill, Philadelphia
3 weeks ago

White streaks running down the chimney for years turned out to be efflorescence — water pulling minerals through the brick. Franklin cleaned the staining, fixed a few soft spots, and sealed everything. The chimney looks better now than when we bought the house.

K
Kelly N.
Germantown, Philadelphia
3 weeks ago

Years of water damage had the mortar crumbling on the weather side. Franklin repointed it and applied a breathable waterproof coating to the whole chimney. They walked me through the warranty and the work has held up beautifully through a rough winter.

Y
Yvonne K.
Kensington, Philadelphia
6 weeks ago

Our chimney faces north and takes a beating every winter. After watching a neighbor pay $9,000 for freeze-thaw damage, I went proactive. Franklin waterproofed mine for a fraction of that, with a five-year warranty. Money very well spent.

L
Lou D.
Center City, Philadelphia
4 weeks ago

We were getting dampness on the interior wall behind the chimney, especially after heavy rain. Franklin tested the masonry with a moisture meter, confirmed it was absorbing water like a sponge, and applied their breathable sealant. Three nor'easters since then — completely dry inside.

Chris & Amy H.
Chris & Amy H.
Powelton Village, Philadelphia
10 days ago

Water was pooling where the chimney meets the roof and the bottom courses were turning to sand. They repointed the damaged area, sealed the transition, and waterproofed the entire stack. Problem completely solved. Fair price and thorough work.

M
Matt R.
Roxborough, Philadelphia
2 weeks ago

Had spalling bricks repaired and Franklin recommended waterproofing as part of the job, explaining the new mortar needs protection too. One crew did both in the same visit — efficient and cost-effective. No more water getting into the masonry.

T
Tony D.
Passyunk, Philadelphia
5 weeks ago

Bought a place in the suburbs with visible water staining on the chimney. Franklin cleaned it up, repaired the soft spots, and waterproofed the stack. Looks great and the interior wall has stayed dry through a wet spring. Excellent value.

S
Sal R.
Media, PA
9 days ago

Our house is only 12 years old but the builder never sealed the chimney. We were already seeing mortar deterioration. Franklin waterproofed it before any real damage happened. Preventive maintenance is way cheaper than emergency repairs. Learned that lesson the easy way for once.

Brian & Jen C.
Brian & Jen C.
Blue Bell, PA
3 weeks ago

Our newer home was never sealed by the builder and the mortar was already deteriorating. Franklin waterproofed it before any real damage set in. Preventive maintenance is so much cheaper than emergency repairs — learned that the easy way for once.

E
Erin P.
Wissahickon, Philadelphia
3 weeks ago
Our Services

Full-Service Chimney Care

From inspections to installations, our CSIA-certified team handles every aspect of chimney maintenance and repair.

Currently Viewing
Chimney waterproofing sealant application
$69 inspection fee credited

Waterproofing

Vapor-permeable sealant that blocks rain and snow while letting moisture escape. Financing available.

Most Popular
Chimney inspection in progress

Chimney Inspections

Safety inspection with camera verification — essential for older homes with hidden risks.

Professional chimney cleaning
$69 inspection fee credited

Chimney Cleaning

Full creosote removal with tarps down and mess cleaned up. Before & after photos included.

Chimney repair and restoration work
$69 inspection fee credited

Repairs & Restoration

Crown repair, flashing, tuckpointing, and brick replacement — built to last through freeze-thaw cycles.

Chimney liner installation
$69 inspection fee credited

Chimney Relining

Stainless steel and HeatShield liners with lifetime warranty. Financing available.

Chimney cap and damper installation
$69 inspection fee credited

Caps & Dampers

Stop animals, downdrafts, and water entry. Stainless steel with lifetime warranty.

We Serve Philadelphia & the Surrounding Suburbs

These are just some of the areas we cover — across Philadelphia and the surrounding suburbs. Don’t see yours? Check your ZIP for an instant answer — or give us a call and we’ll confirm in seconds.

Chimney Waterproofing in Center CityChimney Waterproofing in South PhiladelphiaChimney Waterproofing in Fishtown & KensingtonChimney Waterproofing in Chestnut HillChimney Waterproofing in Manayunk & RoxboroughChimney Waterproofing in Germantown & Mt. AiryChimney Waterproofing in Society Hill

Last reviewed: June 2026

Your Visit in 4 Steps

Here’s Exactly What Happens When You Call

No surprises. No pressure. You’ll know the price before any work starts.

Step 1

You Reach Out

Call, text, or book online. We respond in 15 minutes on average and lock in a time that works for you.

Avg. 15-min response
Step 2

We Show You What We Find

HD camera inspection of your full flue system. You get the same photos we see — no guesswork, no upsell tricks.

Camera-verified
Step 3

You Get a Clear Quote

Written estimate reviewed on-site before any work starts. The price you approve is the price you pay — guaranteed.

Price-lock promise
Step 4

We Clean & Prove It

We protect your floors and leave your home spotless. You get before-and-after photos of everything we did.

Photo proof included
Schedule Your $69 Inspection
or call (888) 250-8841 — we pick up
CSIA-CertifiedSame-Day Available$2M Insured237+ Five-Star Reviews
Written Guarantee on Every Job

Your Price, Your Timeline, Your Satisfaction — Guaranteed

Every job — from Fishtown rowhomes to Chestnut Hill estates — comes with three guarantees in writing.

Price-Lock Promise

The quote you approve is the price you pay. No change orders, no surprises, period.

10-Year Workmanship Warranty

If anything we install or repair fails within 10 years, we fix it free. No questions asked.

Satisfaction or It's Free

Not happy with the finished work? We make it right — or you don't pay a cent.

Book Your $69 Risk-Free Inspection
or call (888) 250-8841 — we pick up
CSIA-CertifiedSame-Day Available$2M Insured237+ Five-Star Reviews
Common Questions

Answers Before You Call

The NFPA recommends annual inspections. In Philadelphia, our freeze-thaw cycles and aging masonry make this especially important — even if you rarely use your fireplace, animals, debris, and moisture can cause hidden damage. An annual check catches small problems before they become expensive emergencies.

Book your annual inspection — $69

Absolutely — historic chimneys are our specialty. Many homes in Germantown, Chestnut Hill, Society Hill, and Fairmount have chimneys with original lime mortar, unlined flues, and corbelled brickwork that require specialized knowledge. We understand the unique construction methods used in Philadelphia's 18th- and 19th-century homes and tailor every repair to preserve your chimney's integrity while bringing it up to modern safety standards.

Schedule your historic home inspection

Yes — we're CSIA-certified, PA-licensed (PA Home Improvement Contractor #PA214853), and carry $2 million in liability insurance. We're happy to provide documentation before any work begins.

Book with confidence

Yes — financing is available on larger projects like relining, masonry repairs, and waterproofing, so a critical repair never has to wait on a lump sum. Every job starts with a written quote and a clear scope, and we'll walk you through payment options that fit your budget before any work begins. No pressure, no surprises — you decide what works for your home.

Get my written quote

Yes — we offer same-day service throughout Philadelphia and surrounding areas. Call us directly at (888) 250-8841 for the fastest response.

Book online

We serve all of Philadelphia — from South Philly rowhomes to Chestnut Hill colonials and everything in between — plus the surrounding suburbs including Montgomery, Delaware, Bucks, and Chester counties. Enter your zip code when requesting a quote and we'll confirm coverage.

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Still Have Questions?

Our team is ready to help. Get answers in minutes, not days.

$2M Insured CSIA Certified 4.9★ (237 reviews)