Protect Your Chimney
Chimney Waterproofing in Denver, CO
Chimney waterproofing in Denver helps limit water absorption through porous brick and mortar. We inspect the chimney, identify visible damage and water-entry concerns, and provide a scope for the work at your home.
- Free in-home inspections
- Same-day service
- Open 24/7
- 10-year warranty
Get a fast quote
When Denver Homeowners Need Chimney Waterproofing
Water can enter through porous masonry, damaged mortar, or other openings around a chimney. Waterproofing addresses the masonry surface, while cracks, loose brick, or damaged flashing may call for a separate repair before the surface treatment makes sense.
Brick or mortar looks damp after rain
Persistent dampness can point to water getting into the masonry. We check the visible brick and joints to help distinguish a surface-sealing need from damage that requires repair.
White staining appears on the brick
A white, powdery deposit can form when moisture moves through masonry and leaves mineral residue behind. The staining is a reason to inspect the chimney, not a substitute for finding where water enters.
Mortar joints are starting to wear
Open or deteriorated joints give water an easier path into the chimney. We identify areas that need masonry repair so a water-repellent treatment is not applied over a problem that should be fixed first.
Water shows up near the fireplace
A leak inside can have more than one possible entry point, including masonry, the crown, or flashing. We look at the visible chimney conditions and identify whether waterproofing alone fits the issue.
You want to protect an older masonry chimney
A treatment may be appropriate when brick and mortar are sound but absorb water. An inspection helps establish the condition of the masonry before you commit to work.
What Our Denver Chimney Waterproofing Service Covers
The right scope depends on the chimney’s condition. We assess the masonry and the likely water-entry points first, then explain which work addresses the problem and which separate repairs may be needed.
- Review of visible brick and mortar — We look for signs such as open joints, cracked masonry, and moisture-related staining that can affect the waterproofing plan.
- Check of the chimney’s water-entry areas — We consider visible conditions around the crown and flashing as well as the masonry, because a leak may not come from the brick surface.
- Identification of needed repairs — Damaged brick or mortar should be addressed as part of the plan rather than simply covered. We also handle related work such as chimney repair.
- Surface preparation planning — The masonry surface needs to be suitable for treatment. We identify preparation needs based on the chimney’s condition and the work included in the quote.
- Water-repellent treatment for masonry — The waterproofing scope focuses on the chimney masonry. A brick chimney sealer is not a fix for a damaged crown, open flashing, or loose masonry.
- Clear scope before work begins — We explain what the quoted work covers and whether repair work is part of the plan, so you know what the service addresses before the job starts.
Need help now? (720) 780-8924
How We Plan and Apply Chimney Waterproofing
You do not need to climb onto the roof or apply a store-bought product before the inspection. Keep the area around the fireplace accessible, and let us know where you have noticed staining, dampness, or a leak.
- Book an in-home inspection — Call (720) 780-8924 or get a free quote. We travel to the customer’s home, including throughout Denver and towns within 60 miles.
- Inspect the visible conditions — We examine the masonry and visible areas that may be letting water in. Sharing where and when you noticed moisture helps focus the inspection on the relevant part of the chimney.
- Set the scope and price — We explain whether the work calls for waterproofing alone or masonry repair before treatment. Chimney size, access, surface condition, and repair needs shape the job scope.
- Complete the agreed work — We prepare and treat the masonry according to the quoted scope, addressing included repairs as planned. The time needed depends on access and whether repairs are part of the job.
What Shapes a Chimney Waterproofing Quote
The quote depends on the amount of masonry to treat, how easily the chimney can be accessed, and the condition of the brick and mortar. If the inspection finds open joints or damaged masonry, those repairs affect the scope; waterproofing should not be treated as a substitute for fixing them.
Chimney waterproofing does not have a listed starting price. We provide a free in-home inspection so we can assess the chimney and quote the work that fits its condition. For a separate chimney sweep, the starting price is from $59.
Need help now? (720) 780-8924
Why Denver Homeowners Call Our Chimney Team
Owner Robert (Bob) Anderson has 28 years of experience with chimneys, and our business is licensed and insured. We go to customers across Denver and towns within 60 miles, and our chimney sweep in Denver service is part of a broader range of chimney and fireplace work. That experience helps us assess whether the masonry needs a water-repellent treatment, repairs, or both before work begins.
Related services
Guides on chimney waterproofing
Frequently asked questions
How do you waterproof a chimney?
The process starts with checking the chimney’s masonry and visible water-entry areas. The work plan identifies whether damaged brick or mortar needs repair before a water-repellent treatment is applied to the masonry.
What does chimney waterproofing cost?
HomeGuide’s 2026 U.S. cost guidance puts chimney sealing at about $150 to $400, with sealing plus waterproofing reaching about $850; those are general market estimates, not our prices. We inspect your chimney at no charge and quote the scope based on its size, access, condition, and repair needs.
Can waterproofing fix a chimney leak by itself?
Not always. Water may enter through a damaged crown, flashing, open mortar joints, or cracked masonry, so the source needs to be identified before choosing the work. We also handle chimney leak repair when the inspection points to a repair rather than masonry treatment alone.
How long does a chimney waterproofing visit take?
The time depends on chimney access, the area being treated, and whether masonry repairs are needed first. We assess the scope at the home and explain the expected work time before the job begins.
Can I use chimney sealing near me for a leaking chimney?
A sealing service can suit porous brick and mortar, but it will not correct every leak. When you book, point out where you see moisture or staining so the inspection can check whether the masonry, crown, flashing, or another visible area needs attention.
Should I waterproof the chimney before repairing damaged mortar?
Damaged or open mortar joints should be included in the repair plan before waterproofing is applied. Treating the surface without addressing visible masonry damage does not fix the damaged joints themselves.
Get a Chimney Waterproofing Quote
Call (720) 780-8924 or contact us to book a free in-home inspection and get a quote for your chimney.