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Old interior brick often sheds a fine red powder onto floors, shelves and furniture. The best brick dust sealer binds that crumbly surface so it stops dusting, while keeping the exposed-brick look you love.
Dusting brick needs a sealer that soaks into the surface and glues loose particles together, then leaves an easy-clean finish. We compared film-forming and penetrating options and explain why cleaning comes first.
Quick Answer: The Best Brick Dust Sealer
- Best Overall: MasonryDefender Brick Sealer Satin Sheen, Water-Based, Reduces Dust (1 gal, 2-Pack)
- Best Widely Available: Rust-Oleum Seal-Krete Original All-Purpose Waterproofer (1 gal)
- Best Clear Look: Drylok Clear Latex Masonry Waterproof Sealer (1 gal)
- Best Penetrating Option: Prosoco Sure Klean Weather Seal Siloxane PD Water Repellent (1 gal)
- Best Sprayer for Walls: Chapin 25012 1-Gallon Clean ’N Seal Poly Deck Sprayer
- Best for Loose Joints: Drylok Fast-Set Waterproof Masonry Crack Filler, Gray (10.5 oz)
MasonryDefender’s satin brick sealer is the best brick dust sealer because it is water-based and listed specifically to reduce dust; Seal-Krete Original is a widely available satin alternative, and Drylok Clear works when you want the brick color unchanged.
Best Brick Dust Sealer 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 |
| 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 Look | Clear masonry waterproof sealer | Clear latex, basement walls | Check Price |
| Prosoco Sure Klean Weather Seal Siloxane PD Water Repellent (1 gal) | Best Penetrating Option | Penetrating siloxane water repellent | Breathable, invisible water repellent | Check Price |
| Chapin 25012 1-Gallon Clean ’N Seal Poly Deck Sprayer | Best Sprayer for Walls | Pump sprayer | Compact 1-gal sealer sprayer | 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 Brick Dust Sealers
Our picks for the best brick dust sealer for interior walls and 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.
Rust-Oleum Seal-Krete Original All-Purpose Waterproofer (1 gal)
2Seal-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)
3Drylok 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.
Prosoco Sure Klean Weather Seal Siloxane PD Water Repellent (1 gal)
4Prosoco’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.
Chapin 25012 1-Gallon Clean ’N Seal Poly Deck Sprayer
5A compact 1-gallon version for small walls, chimneys and touch-ups.
👍 Pros & Cons
Pros
- Compact and light
- Made for sealers
- Easy to carry on ladders
Cons
- Frequent refills on big jobs
- Poly seals
📄 Detailed Review
- Capacity: 1 gallon
- Tank: Poly
- Best for: Small brick walls and chimneys
Lighter sprayers are easier to manage on ladders.
Never overfill above the line.
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 Dust Sealer
To choose the best brick dust sealer, we compared how well each product binds a dusty surface (film-forming sealers usually bind dust best), finish and sheen, water-based formulas for indoor use, and how much each changes the brick’s color.
Choose water-based sealers indoors and ventilate well, following 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 Dust Sealer
Use these steps with the best brick dust sealer.
Find the cause
Dusting comes from soft brick or crumbling mortar. Repoint loose joints first.
Clean thoroughly
Vacuum with a brush attachment and wipe; sealer bonds poorly to loose dust.
Film-forming binds best
Satin or matte film sealers glue loose particles and create a wipeable surface.
Expect slight darkening
Most sealers darken brick a little. Test a hidden area.
Thin coats
Two thin coats bind better and look more natural than one heavy coat.
Ventilate
Use water-based products indoors and keep windows open.
Dust-Free Brick Method
Stop shedding for good.
- Repoint crumbling mortar joints.
- Vacuum and wipe the brick.
- Apply a thin first coat with a brush or sprayer.
- Add a second coat after drying.
Questions about the best brick dust sealer:
Frequently Asked Questions
What is the best brick dust sealer?
The best brick dust sealer is a water-based film-forming sealer like MasonryDefender’s satin brick sealer, listed to reduce dust.
Why is my brick wall dusty?
Soft old brick and crumbling mortar shed fine particles.
Will sealer change the brick color?
Usually slightly. Test first.
Can I seal a dusty fireplace surround?
Yes, the outer surround; never inside the firebox.
How many coats do I need?
Two thin coats are typical.
Final Verdict
Our final pick for the best brick dust sealer is the MasonryDefender Satin Brick Sealer. Choose the Seal-Krete Original if you want a widely available satin option, or the Drylok Clear Masonry Sealer for a clear look.
Related Guides
More brick sealer guides:
- Best Faux Brick on Amazon
- Best Paint for 3D Foam Brick Panels
- Best Peel and Stick Brick Wallpaper for Hot Rooms
- Best Floral Peel and Stick Wallpaper
- Best Red 3D Brick Wall Panels
Product details are based on manufacturer specifications at the time of writing. Prices and availability change often, so check Amazon for the latest price.
