AccentBrick is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. Learn more.
AccentBrick is reader-supported. As an Amazon Associate we earn from qualifying purchases. This does not change our recommendations. Learn more.
Brick fireplace surrounds collect soot, dust and smoke stains over the years. The best brick sealer for fireplace surrounds locks down dust, makes soot easier to clean and keeps the brick looking natural, applied only to the outer surround, never inside the firebox.
Safety first: do not apply sealers inside the firebox or on surfaces that get very hot, follow your fireplace maker’s guidance and let the sealer cure fully before lighting a fire.
Quick Answer: The Best Brick Sealer for Fireplace
- Best Overall: MasonryDefender Brick Sealer Satin Sheen, Water-Based, Reduces Dust (1 gal, 2-Pack)
- Best Invisible Finish: Prosoco Sure Klean Weather Seal Siloxane PD Water Repellent (1 gal)
- Best Widely Available: Rust-Oleum Seal-Krete Original All-Purpose Waterproofer (1 gal)
- Best Clear Option: Drylok Clear Latex Masonry Waterproof Sealer (1 gal)
- Best Stain Protection: Max Guard Water-Based Penetrating Stone Sealer (Repels Oil & Water, Low Odor)
- Best for Loose Joints: Drylok Fast-Set Waterproof Masonry Crack Filler, Gray (10.5 oz)
MasonryDefender’s satin brick sealer is the best brick sealer for fireplace surrounds because it reduces dust and makes cleaning easier; Prosoco Siloxane PD is the best for an invisible finish, and Seal-Krete Original is a widely available satin alternative.
Best Brick Sealer for Fireplace Comparison Table
| Product | Best For | Type | Key Feature | Buy |
|---|---|---|---|---|
| MasonryDefender Brick Sealer Satin Sheen, Water-Based, Reduces Dust (1 gal, 2-Pack) | Best Overall | Film-forming brick sealer | Satin sheen, reduces dust per listing | Check Price |
| Prosoco Sure Klean Weather Seal Siloxane PD Water Repellent (1 gal) | Best Invisible Finish | Penetrating siloxane water repellent | Breathable, invisible water repellent | Check Price |
| Rust-Oleum Seal-Krete Original All-Purpose Waterproofer (1 gal) | Best Widely Available | Film-forming waterproofer | Satin clear, water-based | Check Price |
| Drylok Clear Latex Masonry Waterproof Sealer (1 gal) | Best Clear Option | Clear masonry waterproof sealer | Clear latex, basement walls | Check Price |
| Max Guard Water-Based Penetrating Stone Sealer (Repels Oil & Water, Low Odor) | Best Stain Protection | Water-based penetrating sealer | Repels oil and water, natural look | Check Price |
| Drylok Fast-Set Waterproof Masonry Crack Filler, Gray (10.5 oz) | Best for Loose Joints | Masonry crack filler | Seals cracks and mortar joints | Check Price |
The 6 Best Sealers for Fireplace Brick
Our picks for the best brick sealer for fireplace surrounds.
MasonryDefender Brick Sealer Satin Sheen, Water-Based, Reduces Dust (1 gal, 2-Pack)
1MasonryDefender’s satin brick sealer is made to lock down dusty brick and make it easier to clean.
👍 Pros & Cons
Pros
- Listed as reducing brick dust
- Easy-clean surface
- Water-based
Cons
- Satin sheen changes the look slightly
- Film-forming, less breathable
📄 Detailed Review
- Type: Water-based film sealer
- Finish: Satin
- Base: Water-based
- Best for: Interior brick, dusty brick, easy cleaning
Interior exposed brick often sheds dust; a film-forming sealer binds the surface.
Test a hidden area to check sheen and color.
Prosoco Sure Klean Weather Seal Siloxane PD Water Repellent (1 gal)
2Prosoco’s Siloxane PD is a professional penetrating water repellent for brick and masonry walls.
👍 Pros & Cons
Pros
- Pro brand used on brick facades
- Breathable, does not trap moisture
- Natural, non-glossy look
Cons
- Not a stain or color
- Needs dry, clean brick
📄 Detailed Review
- Type: Penetrating siloxane
- Finish: Invisible / natural look
- Base: Water-based
- Best for: Exterior brick and masonry walls
Penetrating siloxanes soak into masonry and make it shed water while still letting vapor escape, which is why they are favored for exterior brick and chimneys.
Apply to dry, clean brick and follow the label’s saturation directions.
Rust-Oleum Seal-Krete Original All-Purpose Waterproofer (1 gal)
3Seal-Krete Original is an all-purpose water-based waterproofer for masonry.
👍 Pros & Cons
Pros
- Widely available brand
- Water-based
- Satin finish
Cons
- Satin film may slightly darken
- Less breathable than siloxane
📄 Detailed Review
- Type: Water-based waterproofer
- Finish: Satin clear
- Base: Water-based
- Best for: Concrete, brick, masonry
It forms a satin film, which adds stain resistance but changes the look more than a penetrating sealer.
Test first on a hidden spot.
Drylok Clear Latex Masonry Waterproof Sealer (1 gal)
4Drylok Clear is a clear latex sealer for interior basement masonry where you do not want a painted look.
👍 Pros & Cons
Pros
- Clear, keeps masonry color
- Brush, roll or spray
- From a basement waterproofing brand
Cons
- Not for active leaks
- Apply above 50°F per listing
📄 Detailed Review
- Type: Clear latex waterproof sealer
- Finish: Clear
- Base: Latex
- Best for: Basement block and brick walls
It is designed to stop dampness on masonry walls while keeping the block or brick color visible.
Fix drainage and cracks first.
Max Guard Water-Based Penetrating Stone Sealer (Repels Oil & Water, Low Odor)
5Max Guard is a water-based penetrating sealer listed to repel both oil and water with low odor.
👍 Pros & Cons
Pros
- Listed to repel oil as well as water
- Low odor, water-based
- Natural appearance
Cons
- Smaller brand
- Reapply over time
📄 Detailed Review
- Type: Water-based penetrating
- Finish: Natural appearance
- Base: Water-based, low odor
- Best for: Backsplashes, stone, brick
Oil repellency is the key feature for brick behind a stove or on a kitchen backsplash.
Wipe spills quickly even after sealing.
Drylok Fast-Set Waterproof Masonry Crack Filler, Gray (10.5 oz)
6Drylok’s fast-set crack filler seals cracks and failed joints before you apply a sealer.
👍 Pros & Cons
Pros
- Seals cracks before sealing
- Paintable in 1 hour per listing
- Indoor and outdoor
Cons
- Gray color shows on red brick
- Not structural
📄 Detailed Review
- Type: Masonry crack filler
- Finish: Gray
- Base: Cartridge
- Best for: Cracks before sealing
No sealer can bridge open cracks; fill them first.
Tool the joint to match surrounding mortar.
How We Chose the Best Brick Sealer for Fireplace
To choose the best brick sealer for fireplace, we compared water-based sealers suitable for indoor surrounds, how well they bind dust and resist soot, how they change the brick look and cure-time guidance before using the fireplace.
Ventilate well and let sealer cure before lighting a fire, as the EPA guide to VOCs indoors.
Product details in this guide come from manufacturer specifications and patterns in verified owner feedback; we do not claim hands-on testing we have not done. Read more on our How We Test page.
Buying Guide: Best Brick Sealer for Fireplace Surrounds
Tips for using the best brick sealer for fireplace surrounds.
Surround only
Seal the outer face and hearth surround, not the firebox interior.
Clean soot first
Remove soot with a masonry cleaner before sealing, or it gets locked in.
Matte or satin
A low-sheen finish keeps the fireplace looking natural.
Cure before fires
Wait the full cure time on the label before lighting the fireplace.
Hot zones
Brick right around the opening gets hot; check the product’s guidance.
Painted fireplaces
Painted brick usually does not need a clear sealer.
Sealing a Fireplace Surround
Safely and cleanly.
- Let the fireplace cool completely.
- Clean soot with a masonry cleaner.
- Mask the firebox opening and mantel.
- Apply thin coats and let cure fully.
Questions about the best brick sealer for fireplace surrounds:
Frequently Asked Questions
What is the best brick sealer for fireplace surrounds?
The best brick sealer for fireplace surrounds is a water-based sealer like MasonryDefender’s satin brick sealer, applied only outside the firebox.
Can I seal inside the firebox?
No. Do not apply sealers inside the firebox.
Will sealer help with soot stains?
It makes future soot easier to clean; remove existing soot first.
How long before I can light a fire?
Follow the label’s cure time.
Should I seal a painted brick fireplace?
Usually not needed; the paint protects it.
Final Verdict
Our final pick for the best brick sealer for fireplace is the MasonryDefender Satin Brick Sealer. Choose the Prosoco Siloxane PD if you want an invisible finish, or the Seal-Krete Original for a widely available satin.
Related Guides
More fireplace and brick guides:
- Best Faux Brick on Amazon
- Best Brick Sealer for Brick Floors
- Best Brick Sealer for Rainy Climates
- Best Brick Sealer for Brick Pavers
- Best Brick Sealer for Chimney
Product details are based on manufacturer specifications at the time of writing. Prices and availability change often, so check Amazon for the latest price.
