Spalling brick and flaking mortar
We replace the spalled brick with matching units, repack the mortar joints with refractory mortar, and seal the stack with a breathable repellent. That combination stops the cycle and holds for 8 to 10 years.
Vapor-permeable sealing that protects brick, mortar, and your wallet
Chimney waterproofing in Galloway, New Jersey that stops leaks for good
Chimney waterproofing in Galloway, New Jersey is the exterior treatment that keeps wind-driven rain out of your brick and flue. We seal chimneys on homes from Smithville to Pomona before the freeze-thaw cycle starts cracking mortar. If you have seen white staining, spalling brick, or a damp stain on the ceiling near the chase, you need chimney sealing Galloway NJ now, not next spring.
Careful work. Honest options.
About this service
What chimney waterproofing in Galloway, New Jersey actually does
Chimney waterproofing in Galloway, New Jersey is a masonry treatment that repels liquid water while letting the brick breathe. We start with a chimney brush and inspection camera to check the flue, then apply a vapor-permeable water repellent like ChimneySaver to the brick, crown, and mortar joints. The goal is simple: rain bounces off, but moisture already inside the masonry can still escape as vapor. That balance is what separates a real waterproofing job from a paint-over that traps water and makes spalling worse.
Galloway sits close enough to the coast that nor'easters drive rain sideways into chimneys that face the bay. Add 30-plus freeze-thaw cycles each winter and the mortar joints start popping. Homeowners searching for chimney waterproofing near me in Galloway usually call after they spot a rust stain on the damper or a chunk of brick in the flower bed. Sealing before the first hard freeze is the cheapest repair you will ever make to a chimney.
- ✓ Stops spalling brick
- ✓ Prevents interior leaks
- ✓ Extends masonry life
- ✓ Protects the flue liner
What's included
What our chimney waterproofing service includes
Every waterproofing job includes the prep work that makes the seal last. If we find something that needs a separate repair, we show you the photo and quote it before we touch anything. No surprise line items on the invoice.
✓
Full exterior inspection
We check the crown, flashing, mortar joints, and cap from the roof, plus a camera pass down the flue. You get a written summary of what is sound and what needs attention before we apply any repellent.
✓
Surface cleaning and prep
We brush and rinse the brick to remove dirt, mildew, and chalked sealer. Water repellent will not bond to a dirty stack, so this step is what makes the 8-to-10-year lifespan possible.
✓
Crown and flashing sealing
Cracked crowns and failed flashing cause most chimney leaks. We patch the crown with chimney crown mix and reseal the flashing joints before waterproofing the stack. Skipping this step is why some jobs fail.
✓
Vapor-permeable repellent
Two coats of ChimneySaver or HomeSaver repellent on the brick, crown, and mortar. It blocks liquid water but lets trapped vapor escape, which is what keeps the masonry from spalling from the inside out.
✓
Water-bead test and photos
Before we leave, we spray the stack and confirm the water beads. You get before-and-after photos by text or email the same day, plus a note on when to reseal based on your exposure to salt air.
How it works
How our chimney sealing process works
01
Inspection first
We run an inspection camera down the flue and check the crown, flashing, and mortar joints from the roof. You get photos of anything that needs attention before we quote. This takes 30 to 45 minutes and costs nothing when you book the waterproofing.
02
Surface prep
Water repellent will not bond to dirt, mildew, or loose mortar. We hit the brick with a chimney brush and rinse the stack, then grind out any joint that has already failed. Skipping this step is why some waterproofing jobs peel within a year.
03
Crown and flashing repair
A cracked crown dumps water straight into the flue. We patch or recast the crown with chimney crown mix and reseal the flashing where the stack meets the roof. This is the step that actually stops most leaks.
04
Apply the repellent
We spray or brush on ChimneySaver or a comparable vapor-permeable sealant, two coats on the windward face. Coverage runs about 125 square feet per gallon. It dries in 4 to 6 hours and cures fully within 24.
05
Final check and photos
Before we pack up, we water-test the stack and send you before-and-after photos. If we find a damper malfunction or a damaged cap while we are up there, you get a straight price on the spot, no pressure.
Tools & methods
Tools and methods we use
Purpose-built equipment, used by trained technicians — so the job is done accurately the first time.
Chimney brush and rods
Used to scrub dirt, mildew, and chalked sealer off the brick before applying repellent. A clean surface is the difference between an 8-year seal and a 2-year peel.
Inspection camera
Dropped down the flue to check for cracked clay flue tile, creosote buildup, and liner gaps. We show you the footage so you can see what we see.
Tuckpointing trowel and mortar hawk
Used to grind out and repack failed mortar joints with refractory mortar before sealing. Skipping this step traps water behind the new seal.
Angle grinder
Cuts out deteriorated mortar to a consistent depth so the new joint bonds properly. It is the tool that makes a tuckpointing repair last.
ChimneySaver water repellent
Vapor-permeable sealant that blocks liquid water but lets moisture escape. We use it because it does not trap vapor and cause spalling from the inside.
Chimney crown mix
A flexible, crack-resistant mix for recasting crowns. Standard mortar cracks within a season or two on a Galloway roof.
Damper clamp
Installed where code requires it to keep the damper from fully closing on a gas log set. A small part that keeps you on the right side of inspection.
Real results
Before and after.
Smithville chimney stops leaking after crown recast
Before
A 1985 brick chimney in Smithville had a cracked crown, three washed-out mortar joints, and a ceiling stain in the upstairs hall. The homeowner had patched the stain twice with Kilz and it kept coming back.
After
We recast the crown with chimney crown mix, tuckpointed the failed joints, and applied two coats of ChimneySaver. The ceiling stain has not returned in two winters, and the water-bead test still passes at the 18-month mark.
Oceanville bay-side stack resealed for salt exposure
Before
A bay-front chimney in Oceanville was spalling on the west face after 12 years without a reseal. The damper had rusted shut and the firebox showed water staining on every rain event.
After
We replaced 18 spalled bricks, rebuilt the crown, replaced the damper, and sealed the stack with extra repellent on the windward face. Six months later the brick is dry and the damper opens smoothly.
Pomona duplex leak fixed in one visit
Before
A landlord in Pomona was getting leak calls from a tenant every time it rained hard. The shared chase had failed flashing and a rusted cap on one stack, plus mortar joint deterioration on both chimneys.
After
We reset the flashing, replaced both caps with stainless models, tuckpointed the joints, and waterproofed both stacks in a single 7-hour visit. No leak calls in the 14 months since.
Problems we solve
Chimney problems we solve in Galloway
Water damage rarely shows up as a single problem. It starts with a wet brick and ends with a rebuild. Here is what we see most often and how we stop it.
Ask a pro →↗
Water stains on the ceiling near the chase
We trace the leak with an inspection camera, repair the crown or flashing, then waterproof the stack. Most Galloway leaks we see come from a cracked crown, not the flashing, so we check both.
Crumbling chimney crown
We grind out the cracks, recast the crown with chimney crown mix to a proper slope, and seal it. A crown that sheds water correctly adds years to the whole chimney.
Rusted damper and firebox
We repair or replace the damper, rebuild damaged firebrick with refractory mortar, and waterproof the exterior so the water never gets there again. Both fixes usually run on the same visit.
Proof you can check
Licensed, certified, and reviewed
✓
CSIA Certified Chimney SweepChimney Safety Institute of America
✓
NFI CertifiedNational Fireplace Institute
✓
NCSG MemberNational Chimney Sweep Guild
✓
New Jersey Home Improvement Contractor (HIC) LicenseNew Jersey Division of Consumer Affairs
✓
OSHA 10Occupational Safety and Health Administration
Most single-stack chimneys in Galloway run $350 to $650 for a full waterproofing job in 2026, including crown patching and flashing reseal. Two-flue or heavily spalled chimneys can reach $900. Chimney sealing cost Galloway New Jersey depends on stack height, square footage, and how much mortar repair is needed first. We quote a flat price after a free inspection.
Thrive Sharp does. We are based in Galloway and have been sealing chimneys here since 2021. Our techs are CSIA certified and we carry the New Jersey HIC license. We cover Galloway Township, Smithville, Pomona, Absecon Highlands, and the surrounding towns. Call (844) 803-5147 and we will get you on the schedule this week.
Every 5 to 7 years for a standard breathable repellent, or every 3 to 4 if your chimney faces the bay and takes direct salt spray. Galloway's freeze-thaw cycle is hard on masonry, so we check the repellent at every annual inspection. If water still beads on the brick, you are fine. If it soaks in, it is time to reseal.
Yes, when the crown and flashing are sound. Waterproofing stops rain from soaking through the brick and mortar, which is the source of most chimney leaks. It will not fix a cracked flue liner or a failed flashing on its own, so we inspect both first. Chimney leak prevention Galloway New Jersey starts with sealing the masonry and repairing the crown.
More services
Related Services
Chimney Repair Near MeIf waterproofing turns up spalling brick or a cracked crown, we handle the repair on the same visit. Our chimney repair near me service covers everything from a single brick swap to a full crown recast, so you are not scheduling two crews.Explore →
Chimney Masonry RepairWaterproofing only works on sound masonry. If your mortar joints are already washed out, we rebuild them with refractory mortar first, then seal. That order matters, and it is why our waterproofing jobs hold up through multiple winters.Explore →
Chimney Crown RepairA cracked crown is the number one cause of chimney leaks in Galloway. We recast or patch the crown with chimney crown mix before applying any repellent. Sealing over a bad crown just traps water underneath and makes the damage worse.Explore →
Chimney ReliningWaterproofing protects the outside of the chimney, but the flue liner protects your home from carbon monoxide. If our inspection camera finds cracked clay flue tile, we install a stainless steel liner to NFPA 211 spec. Both jobs often run together.Explore →
Chimney Cap RepairA missing or rusted cap lets rain straight into the flue. We repair or replace caps with stainless models that keep water, birds, and nesting animals out. Pairing a new cap with waterproofing is the cheapest way to stop a chimney leak.Explore →
Chimney MaintenanceAnnual maintenance catches failed mortar and worn repellent before they turn into a leak. Our maintenance visit includes a flue inspection, creosote check, and a water-bead test on the brick. Most Galloway homeowners book it every fall.Explore →
Fireplace RepairWater damage does not stop at the chimney. If your firebox has cracked firebrick or a rusted damper, we repair it with refractory mortar and a new damper. A dry chimney means a fireplace that drafts correctly and burns clean.Explore →
Emergency Chimney RepairWhen a storm knocks bricks loose or a leak starts pouring into your living room, we roll a truck. Emergency chimney repair in Galloway includes tarping, stabilizing the stack, and a permanent fix scheduled fast. Call (844) 803-5147 any time.Explore → Ready when you are
Get chimney waterproofing in Galloway, New Jersey before the freeze
Fall slots fill fast and the first hard freeze usually hits in late November. Call (844) 803-5147 and we will inspect, quote, and seal your chimney before the damage starts. Licensed, insured, and warrantied work.
Book Free Inspection (844) 803-5147 →
Request an appointment
Get your chimney looked at
Call (844) 803-5147 or send us a message and we will get back to you the same business day. We book Monday through Friday, 8 a.m. to 6 p.m., with same-day and after-hours slots for active leaks and storm damage. Tell us what you are seeing and we will tell you what it takes to fix it.
Call anytime(844) 803-5147Email the office[email protected]
Office hoursOpen 24 hours · 7 days a week