10 Best Chimney Saver of 2025

Tested and Reviewed: Top 10 Chimney Saver deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

ChimneySaver

ChimneySaver Water-Base Water Repellent with Stain Blocker - Masonry Protection - 1 Gallon

Editor's bottom line:

“This chimney saver is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

MAXIMUM WATER REPELLENCY: Reduces water penetration by 99.9% while remaining 100% vapor permeable for long-lasting chimney protection and breathability.
MAINTAINS ORIGINAL APPEARANCE: This clear chimney waterproofing sealant will not alter the surface color or appearance, preserving the natural look of masonry.
VERSATILE APPLICATION OPTIONS: Suitable for use as a chimney sealer or stain blocker on masonry surfaces. Ideal for both residential and commercial chimneys.
EASY TO APPLY FORMULA: Liquid form allows for simple application by brush, roller, or sprayer. Compact 1 gallon size is perfect for small to medium projects.
LONG-LASTING WARRANTY COVERAGE: Warranties available for added peace of mind. Protect your chimney investment with reliable, professional-grade waterproofing.

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Picked by 397 people today

9.5

ChimneySaver

ChimneySaver Water-Base Waterproofing Sealer (2.5 Gallon)

Main Highlights

Water-Based Formula: Our water-based formula ensures a safer and more environmentally conscious application.
Prevents Water Damage: ChimneySaver Water-Base forms a powerful barrier, preventing water penetration and protecting your chimney from moisture-related issues such as cracking, spalling, and deterioration.
Long-Lasting Protection: With its advanced formula, this waterproofer provides long-lasting protection against water intrusion, ensuring the longevity and structural integrity of your chimney.
Easy Application and Cleanup: Applying ChimneySaver is a breeze. Its user-friendly application process allows for quick and hassle-free coverage. Cleanup is easy with soap and water, saving you time and effort.
Paintable with Oil-Based Primer: If desired, you can easily paint over this sealant with an oil-based primer, allowing for customization and seamless integration with your chimney's aesthetics.

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9.5

ChimneySaver

ChimneySaver Water-Base Waterproofing Sealer (5 Gallon)

Main Highlights

Water-Based Formula: Our water-based formula ensures a safer and more environmentally conscious application.
Prevents Water Damage: ChimneySaver Water-Base forms a powerful barrier, preventing water penetration and protecting your chimney from moisture-related issues such as cracking, spalling, and deterioration.
Long-Lasting Protection: With its advanced formula, this waterproofer provides long-lasting protection against water intrusion, ensuring the longevity and structural integrity of your chimney.
Easy Application and Cleanup: Applying ChimneySaver is a breeze. Its user-friendly application process allows for quick and hassle-free coverage. Cleanup is easy with soap and water, saving you time and effort.
Paintable with Oil-Based Primer: If desired, you can easily paint over this sealant with an oil-based primer, allowing for customization and seamless integration with your chimney's aesthetics.

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9.2

CHIMNEYRX

ChimneyRx 300119 Masonry Chimney Water Repellent - Siloxane Based, Non-Film-Forming, Breathable, and Transparent Waterproof Coating for Brick Chimneys & Other Vertical Surfaces - 1 Gallon

Main Highlights

ADVANCED SILOXANE FORMULA: Siloxane masonry sealer deeply penetrates up to 1/4 inch into masonry and concrete, creating a strong, breathable water repellent barrier that provides lasting protection without altering the appearance of brick or stone
BREATHABLE PROTECTION: Unlike film-forming sealers, ChimneyRx waterproof sealer allows water vapors to escape, preventing trapped moisture, which leads to spalling and scaling, while reducing the risk of freeze-thaw damage during colder months
DURABLE & LONG LASTING: Our chimney waterproofing sealant forms strong chemical bonds beneath the surface, becoming a part of the physical structure, providing long-lasting protection against water damage to chimneys, ensuring years of defense
EASY APPLICATION & CLEANUP: Apply the chimney sealer with a pump or airless sprayer; lay a drop cloth around the base, spray from the bottom up, and cover thoroughly; apply a second coat within 3-5 minutes; cleanup is easy with just soap and water
DRY TIME & COVERAGE: This masonry sealant covers approximately 40 sq. ft. per gallon; apply in temperatures between 40-90°F, allow 2-6 hours drying time depending on humidity for optimal protection (apply at least 6 hours before rainfall)

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9.0

MasonryDefender

MasonryDefender Chimney Brick Sealer, Clear Water-Based Siloxane Sealer - Breathable Waterproofer For All Exterior, Vertical Masonry Surfaces - 1 Gal

Main Highlights

A CHIMNEY SEALANT WITH ENDURING PERFORMANCE: This brick protector creates a permanent bond with your chimneys masonry for durable protection. It allows trapped moisture to escape, preventing freeze/thaw damage and ensuring lasting effectiveness
SILOXANE BRICK SEALER PREVENTS LEAKS: Chimney waterproofing is important because cracks in your chimney can let water seep into the home; this water repellent effectively seals & waterproofs your chimney, protecting your home from water intrusion
BREATHABLE BRICK SEALER EXTERIOR PROTECTION: This non-film forming sealant spray offers breathable, superior protection without altering surface color for residential chimneys, brick walls, and vertical masonry surfaces like stone, stucco, and more
EASY APPLICATION WATER-BASED CHIMNEY WATERPROOFING SEALANT: Apply 2 coats of chimney sealer with a pump-up sprayer while using drop cloths to prevent overspray, but product is water based & VOC compliant, so its easy to clean up
COVERAGE & DRY TIME: Our siloxane brick sealer covers 80-150 sq. ft. per gallon (2 coats). Dries to touch in 2-6 hours after you spray sealer. Waterproof in 4-6 hours, with continued strengthening over several weeks

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8.8

ChimneySaver

ChimneySaver Cre-Away Creosote Modifier (16 Oz Squeeze Bottle) - The Original Creosote Remover for Chimneys, Wood Stove Cleaner, Wood Burning Fireplace

Main Highlights

REMOVES CREOSOTE WITH EASE Fast, Effective, and Easy To Use! Our powerful formula works to destroy glazed creosote and soot in your wood burning fireplaces, chimneys, and stoves. Strong fireplace cleaner to make chimney sweeping easier
4 PHASE POWDER Chimney cleaning powder specially engineered to remove creosote in 4 phases: Neutralizes to less corrosive and flammable, absorbs oils & moisture, reduces the chance of a chimney fire, and breaks down third degree creosote when the flue is heated
REDUCES ODORS Cre-Away not only breaks down and helps remove dangerous creosote build up, but will act as a strong fireplace deodorizer. The reactive agent, dehydrator, and magnesium catalyst work together to break down and absorb chemical smells
EASY TO USE Safe and effective chimney sweep kit. Simply squeeze the bottle near the flue and the powder is then carried up the chimney beginning the breaking down process. Once heated as normal, the creosote will turn to ash - making it easy to sweep and clean up
PROFESSIONALS CHOICE Cre-Away has been the go-to choice for Professional Chimney Sweeps since the 1980s. The standard when it comes to a safe, working fireplace or stove. Great chimney sweep kit to use as wood stove cleaner, fireplace deodorizer, soot remover

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8.6

MasonryDefender

MasonryDefender Chimney Crown Sealer - Brushable Waterproof Sealant Prevents Leaks - 1/2 Gallon

Main Highlights

ELASTOMERIC WATERPROOFING SEALANT: Forms a flexible, waterproof membrane to protect masonry or concrete chimney crowns. Stops water leaks fast and is designed for long-lasting durability.
FLEXIBLE CHIMNEY REPAIR SEALER: Ideal for minor cracks and imperfections on chimney crowns. This chimney crack sealer remains flexible and resists chipping or cracking for years of protection.
EASY BRUSH APPLICATION: No primers or pre-coats needed. Simply brush on two coats of this brushable chimney crown sealer for superior waterproofing, saving time and effort during repairs.
SURFACE PREPARATION TIPS: Ensure the chimney crown is clean, dry, and structurally sound before applying. Use a stiff brush to remove debris and protect the roof with drop cloths during application.
FAST DRY TIME & COVERAGE: Covers up to 20 sq. ft. per 1/2 gal. with two coats, depending on surface texture. Dries to the touch in 3060 minutes and fully cures in 24 hours for quick results.

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8.3

ChimneySaver

Cold Weather CrownCoat, 1 Gallon

Main Highlights

Brushable, Elastomeric Coating Forms Flexible Waterproof Coating
Ready To Use & Easy To Apply with 3" or 4" Brush (Not Included)
Cures Naturally Above Freezing Temperatures & Accelerated "Freeze-Curing" in Below Freezing Temperatures
Ten-Year Warranty When Applied by a Professional

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8.1

ChimneySaver

ChimneySaver FlashSeal Elastomeric Roof Chimney Flashing Sealant - Waterproof, Flexible Seal - 1 Gallon (White)

Main Highlights

LEAK PROTECTION FOR CHIMNEYS: Creates a flexible waterproof barrier for chimney flashing repair and sealing around vents, stacks, and skylights to stop water leaks and prevent damage.
DURABLE FLEXIBLE SEAL: Made from synthetic rubber, this chimney flashing sealer resists cracking and chipping, maintaining long-lasting flexibility for reliable exterior protection.
EASY APPLICATION PROCESS: This liquid flashing sealant applies smoothly with a brush. Use a 1/8 in. coating to fill cracks and holes. Cleans up easily with soap and water after use.
STRONG ADHESION TO SURFACES: Bonds permanently to asphalt shingles, metal flashing, brick, and other roofing materials. Available in white, black, and brown to match your roof.
WARRANTY AND PEACE OF MIND: Backed by a 7-year warranty when used with FlashSeal Fabric. Provides lasting protection for chimney flashing repairs and helps extend roof life.

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8.1

CHIMNEYRX

ChimneyRx Advanced Water Repellent - Clear Sealer for Masonry Surfaces - High-Performance Polysiloxane Formula for Brick, Stone, & Concrete Waterproofing with Long Lasting Protection, 1-Gallon

Main Highlights

BREATHABLE MASONRY WATERPROOFING SEALER: This penetrating concrete sealer uses a polysiloxane formula to deeply permeate masonry surfaces, creating a breathable barrier that repels water, lets moisture escape, and helps prevent freeze-thaw damage
APPLY OVER OLD OUTDOOR STONE SEALER: Whether youre using this as a concrete sealant or a brick waterproofing sealer, it works on previously treated surfaces sealed with water-based or solvent-based products to enhance water resistance & fix leaks
VERSATILE WATERPROOF SPRAY SEALER: Effective on multiple masonry surfaces, it can be used as a concrete waterproofer & cement sealer, or a brick wall & chimney sealant that can be used on both residential and commercial projects
0 VOC CLEAR WATERPROOFING SEALANT: Our brick sealer dries to a non-glossy finish, preserving the natural look of masonry while providing superior water resistance; it wont alter the surface appearance and meets strict air quality standards
EASY APPLICATION & CLEAN-UP: Apply this chimney waterproofing sealant with a brush, roller, or sprayer; each gallon covers 90-150 sq. ft. depending on surface porosity; cleanup is simple with soap and water

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Our Best Overall Choice

Best Choice

9.7

ChimneySaver

ChimneySaver Water-Base Water Repellent with Stain Blocker - Masonry Protection - 1 Gallon

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

MAXIMUM WATER REPELLENCY: Reduces water penetration by 99.9% while remaining 100% vapor permeable for long-lasting chimney protection and breathability.
MAINTAINS ORIGINAL APPEARANCE: This clear chimney waterproofing sealant will not alter the surface color or appearance, preserving the natural look of masonry.
VERSATILE APPLICATION OPTIONS: Suitable for use as a chimney sealer or stain blocker on masonry surfaces. Ideal for both residential and commercial chimneys.
EASY TO APPLY FORMULA: Liquid form allows for simple application by brush, roller, or sprayer. Compact 1 gallon size is perfect for small to medium projects.
LONG-LASTING WARRANTY COVERAGE: Warranties available for added peace of mind. Protect your chimney investment with reliable, professional-grade waterproofing.

Show Price

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