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Model #143

2.5 Gal. Long-Lasting Waterproofing Brick Concrete and Paver Sealer

  • Seal brick, mortar, pavers, patios, concrete and porous masonry
  • Prevents water seepage, mold growth, efflorescence, and spalling
  • Unsurpassed protection, 15-year waterproofing warranty
  • See More Details

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Product Overview

LastiSeal is a water-based, polyester-polymer and polyurethane sealer for brick, concrete, pavers, stones, mortar and other porous masonry. LastiSeal penetrates up to 4 in. and fills the pores, bonds the substrate and cures as a hard plastic below the surface. Unlike paints or surface sealers, LastiSeal will not change the appearance or feel of your brick, concrete or masonry. LastiSeal does not form a surface film and will not leave a gloss finish or color on the surface. Once cured (24 hours), the seal is practically permanent. Seal brick walls and floors, indoors and outdoors, brick chimneys, pavers, driveways, pool-decks, patios, stones, tiles, grout, water-features and porous stone. Non-toxic, non-flammable and non-hazardous. No odor. Ultra-low VOCs. Not harmful to plants. Protects against: Freeze-thaw damage, wind-driven rain, negative side water pressure, spalling, spills, mold, algae, humidity and efflorescence. Approx. coverage per 2.5 Gal. pail: Bricks - 400 sq. ft. to 500 sq. ft., Poured Concrete - 500 to 600 sq. ft. More porous surfaces may require a light second application.
  • Ideal for interior and exterior brick, concrete, stone, pavers, mortar and other porous masonry
  • Protects against water seepage, freeze-thaw damage, staining, algae and mold, wind-driven rain, cracking and spalling
  • Will not change the look or feel of your masonry, treated surfaces are not slippery
  • Safe for indoor or outdoor use, easy to apply, no odor, non-hazardous, non-flammable
  • Quick and easy application using a hand-pump sprayer or roller
  • Seals up to 250 sq. ft. per gallon, actual coverage will vary with surface porosity
  • Treated surfaces can be painted (no latex)
  • Unbeatable service life of 15-years

Info & Guides

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Price
Ratings
(102)
(31)
(59)
(11)
Container Size1 Gallon2.5 Gallon5 Gallon5 Gallon
Surface LocationBasement Floor,Basement Wall,Driveway,Exterior Wall,Garage Floor,Garage Wall,Patio,PaversBasement Floor,Basement Wall,Driveway,Exterior Wall,Garage Floor,Garage Wall,Patio,Pavers,PaversBasement Floor,Basement Wall,Driveway,Exterior Wall,Garage Floor,Garage Wall,Patio,PaversBasement Floor,Basement Wall,Driveway,Exterior Wall,Garage Floor,Patio,Pavers,Pool
TransparencyClearClearClearClear
Paint/Stain FeaturesDries Clear,Mildew Resistant,Moisture Resistant,UV/Fade Resistant,WaterproofAbrasion Resistant,Algae Resistant,Chemical Resistant,Dries Clear,Driveable Surface,Durable,Inverted spray ability,Low OdorDries Clear,Mildew Resistant,Moisture Resistant,Stain Resistant,UV/Fade Resistant,Washable,WaterproofDries Clear,Mildew Resistant,UV/Fade Resistant
Base MaterialWater BasedWater BasedAcrylicAcrylic
Stain & Sealer In One NoNoNo
View ProductView ProductView ProductView Product

Specifications

Dimensions

Container Size
2.5 Gallon
Coverage Area (sq. ft.)
500

Details

Application Method
Brush,Pump-up Sprayer,Roller
Base Material
Water Based
Coating Product Category
Waterproofer/Sealer
Color/Finish
Clear/Matte
Dry To Touch Time (hh:mm)
03:00
Interior/Exterior
Exterior,Interior
Maximum hydrostatic pressure (lb.)
100
Maximum Optimal Temperature (F)
90
Minimum Optimal Temperature (F)
40
Number per Package
1
Paint/Stain Features
Abrasion Resistant,Algae Resistant,Chemical Resistant,Dries Clear,Driveable Surface,Durable,Inverted spray ability,Low Odor
Paint/Stain/Waterproofer Product Type
Concrete Waterproofer/Sealer
Recommended Number of Coats
1
Returnable
90-Day
Stain & Sealer In One
No
Substrate/Surface Usage Type
Brick,Concrete,Plaster,Stone,Stucco
Surface Location
Basement Floor,Basement Wall,Driveway,Exterior Wall,Garage Floor,Garage Wall,Patio,Pavers,Pavers
Transparency
Clear
Vertical/Horizontal
Vertical / Horizontal

Questions & Answers

43Questions19Answers

Does Lastiseal come in colors? We want to seal and color our concrete patio that’s less than a ye...

Asked by Bob March 19, 2021
3
Answers

don't know if it comes in colors or if colors can be added. call Radonseal themakers of product. 1-800-472-0603

i have a nature stone product applied to my garage floor. water is getting through to the room un...

Asked by bacala December 27, 2020
1
Answer

Yes, but it may require two-three coats. I tried to put it on thin and let it soak into the concrete before the next coat.

Is this product already mixed? So all you have to do is add sealant sand?

Asked by Tee November 11, 2020
1
Answer

LastiSeal comes ready to use but there is no way to add sand to this product. LastiSeal is a deep-penetrating sealer - it disappears into the substrate and fills the pores. However, it does not make the surface slippery when wet, because there is no surface film. Feel free to give us a call to discuss in more detail.

Will this reduce the constant dusting on concrete slab?

Asked by Jack October 24, 2020
2
Answers

Yes it should, but you need to clear off all the dust and make sure its completely dry before applying.

Our pavers seem faded, will this bring back the color?

Asked by K123N July 23, 2020
2
Answers

LastiSeal Brick & Concrete Sealer | FLAT leaves a natural finish to the surface (clear/matte). LastiSeal is an impregnating sealer that when applied to a sufficiently porous surface, will not change the appearance or friction profile. A safe choice before painting, use on high-vehicular and foot traffic areas, and horizontal surfaces such as; ramps, pool decks, stairs, decks, warehouse concrete floors, patios, paver sidewalks, concrete curbing, concrete bridges, parking lots, brick walkways, and similar.

Can I use this to waterproof the grout between tiles on an exposed tile deck?

Asked by D45 July 12, 2020
1
Answer

Yes, LastiSeal can be applied to any porous substrate, including grout/mortar. It should not be applied to non-porous surfaces, like some polished or non-porous tiles. Make sure the grout is not not cracked, and has not separated form the tile. If so, it should be replaced and then sealer. LastiSeal does not fill cracks or gaps.

Does LastiSeal come in containers smaller than 2.5 gal?

Asked by Ron July 8, 2020
2
Answers

1 gallon is the smallest size.

I want to use this product to seal a wooden deck. What say you?

Asked by Clogger February 20, 2020
5
Answers

not for wood products, only use on dry brick, morter, pavers,stone,concrete. must wait 30 days on new concrete

Can you apply this to brick that has heated wire underneath

Asked by Laurel December 6, 2019
1
Answer

Yes. You can apply LastiSeal to concrete, brick and masonry with radiant heating systems.

Will this product prevent moss and algae growth in the cracks of my pavers?

Asked by Frank September 27, 2019
1
Answer

LastiSeal is too low viscosity a sealer to fill cracks or seams between pavers. Sealers in general help to reduce mold and algae growth and improve maintenance, but nothing completely eliminates mold growth.

2.5 Gal. Long-Lasting Waterproofing Brick Concrete and Paver Sealer - page 2

Customer Reviews

  • 4.4
    out of 31 reviews
  • 100% recommend this product
Filter by:
Showing 1-10 of 31 reviews
Facelift to pavers
I used the garden sprayer. If it pooled I used a paint bush to even. Covered almost 1000 sqft with 5 gal. My pavers were looking chalky and faded and even though I used the Natural finish, it added a slight amount of youth to my pavers. It did not change the color and there is zero sheen. It’s hard to describe they don’t look brand new but seriously younger. Water beads and runs off. Hope it lasts 15 years that would be a bonus. Anyone can apply this just get the spray setting right. Going to do my driveway.
by Cher
This sealant is excellent for old efflorescing brick. I have a 100 year old loft with original Ch...
This sealant is excellent for old efflorescing brick. I have a 100 year old loft with original Chicago brick & bought the matte formula which enhanced all the colors & texture of the brick & darkened it just a tidge which looks excellent. No odor whatsoever and even though it's like water, I just rolled it on with an extra wide roller with the largest nap making sure to roll out the excess before applying which made for minimal mess and dripping. Before pic is after scraping/vacuuming brick and after pic is the recommended 2 liberal coats with 24 hrs in between...what a difference! Love it~ thanks LastiSeal!
by Zandra
We enclosed a covered 21'x14' open patio with a 2ft high brick\mortar wall and 6' tall weather pr...
We enclosed a covered 21'x14' open patio with a 2ft high brick\mortar wall and 6' tall weather proof vinyl windows, creating a wonderful Sun Room addition. Our concern for weather penetration through the double brick wall and mortar was confirmed with the first heavy rain storm. Although there was no standing water intrusion, the very porous clay bricks\mortar quickly acted like a dry sponge and dampened the now living space interior of the sun room's masonry window foundation...not good. After doing extensive on-line research, I came upon the RadonSeal products and quickly identified their polyester polymer based "LastiSeal" Brick and Masonry Sealer as what we needed to block any moisture\rain intrusions. After speaking with Craig at RadonSeal, he confirmed that their LastiSeal product would be a great solution to our sun room's moisture issues. We only had 50sf to seal (exterior brick), just purchased a 1-gallon container directly from RadonSeal. As weather became optimum (but winds were strong), I choose to apply the treatments with a brush (very easy and simple). Our bricks and mortar are so porous, the first treatment soaked in with the surface dry-to-the-touch in 5 minutes! As per directions, 24 hours later I reapplied (again with brush) and the second application took 2 hours for surface to dry. Through all of the applications and once dry to the touch, the brick\mortar surfaces returned to their original colors, again matching our home's brick-veneer facade! Two days after the 2nd application and again twice in the past 3 weeks, thunderstorms soaked the brick\mortar exterior walls of the sun room with absolutely NO moisture intrusion into the interior...WOW! We really love our new sun room addition and understanding that LastiSeal never needs reapplying, I can unequivocally state, "LastiSeal is Worth Every Penny"!!!
by Theo
13 people found this helpful
Solved watre intrusion problem on my concrete basement floor.
Solved watre intrusion problem on my concrete basement floor.
by Joe
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Works great. Did great sealing brick around my house....
Works great. Did great sealing brick around my house.
by EUGENE
Used a tank sprayer to apply to my chimney. ...
Used a tank sprayer to apply to my chimney. Worked well.
by Bratcher
I would rate it rate it higher after the rain...
I would rate it rate it higher after the rain
by HomeDepotCustomer
Works very well. If you calculate the amount you need for your project, add at least 1-2 extra ga...
Works very well. If you calculate the amount you need for your project, add at least 1-2 extra gallons. It is water based and the concrete will soak-up some of it. I would anticipate two coats for it to work best.
by Don
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Showing 1-10 of 31 reviews