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Internet # 207021991

Model # 143

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

$149.00
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  • Seal brick, mortar, pavers, patios, concrete and porous masonry
  • Prevents water seepage, mold growth, efflorescence, and spalling
  • Unsurpassed protection, 15-year waterproofing warranty
  • View More Details
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Product Details

About This Product

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.

Highlights

  • 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
  • Return Policy

Product Information

Internet # 207021991

Model # 143

Additional Resources

Shop All LastiSeal

Specifications

Dimensions

Container Size

2.5 Gallon

Coverage Area (sq. ft.)

500

Details

Application

Concrete Waterproofer/Sealer

Application Method

Brush, Pump-up Sprayer, Roller

Base Material

Water Based

Color Family

Clear

Color/Finish

Clear/Matte

Dry To Touch Time (hh:mm)

03:00

Finish Family

Natural

Interior/Exterior

Exterior, Interior

Maximum hydrostatic pressure (lb.)

7

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

Recommended Number of Coats

1

Returnable

90-Day

Substrate/Surface Material Use

Brick, Concrete, Plaster, Stone, Stucco

Surface Location

Driveway, Exterior Wall, Garage Floor, Garage Wall, Patio, Pavers, Pool Deck

Transparency

Clear

Vertical/Horizontal

Vertical / Horizontal

Questions & Answers

53Questions
caret
Q:Does this work in a freezing environment? Our concrete deck is covered with snow and ice half the year.
by|Mar 9, 2024
1 Answer
Answer This Question

A:  Yes. LastiSeal can be used in all temperatures. It is not affected by cold/freezing.

by|Apr 16, 2024
    caret
    Q:Can I apply this sealer on concrete resurfaced?
    by|Mar 8, 2024
    0 Answer
    Answer This Question
    caret
    Q:I hope to use this on historic brick window sills. Previous coats of paint were chemically removed and the brick was completely repointed, but it was impossible to remove all flecks of paint on the brick. Is your product appropriate for waterproofing?
    by|Feb 28, 2024
    1 Answer
    Answer This Question

    A:  Thank you for expressing your interest in our product. For best results, it is important that the sealer be applied only to bare surfaces. Applying LastiSeal over a surface with existing paint is not recommended, as it may compromise the effectiveness of the product. The formulation of LastiSeal is optimized to internally bond with the porous structure of brick and concrete, ensuring optimal penetration and sealing. However, the presence of the paint will hinder the sealer's ability to penetrate effectively. If you need further clarification about the compatibility of our product with your specific surface, please do not hesitate to contact one of our expert technicians. Kind Regards, ---------------- Customer Support RadonSeal®

    by|Feb 28, 2024
      caret
      Q:I have an old fireplace that is capped but leaks when it’s raining. Will this seal the chimney if its leaking through the mortar
      by|Jan 9, 2024
      1 Answer
      Answer This Question

      A:  LastiSeal will seal mortar.

      by|Jan 10, 2024
        Showing 1-4 of 53

        Customer Reviews

        4.3 out of 5

        • 4.3 out of 43 reviews
        • 93% recommend this product
        Filter by:
        Showing 1-10 of 43 reviews
        Not sealing off water
        Followed the instruction and applied the product on cleaned concrete ground of a covered patio. After 24 hr, test the seal result with water. The concrete took the water in and turned into darker water mark, as shown in the photos. Wasted time and money.
        by
          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
            • Recommended
            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
            • Verified Purchase
            • Recommended
            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
            • DIY
            • Recommended
            14 found this review helpful
            It dried flat as stated. Too early to tell if it repels water
            by
            • Verified Purchase
            by
            • Verified Purchase
            by
            • Verified Purchase
            by
            • Verified Purchase
            Seemed to work ok. Very easy to apply with a...
            Seemed to work ok. Very easy to apply with a pump sprayer
            by
            • Verified Purchase
            It is as thin as water so ran down the...
            It is as thin as water so ran down the wall very quickly. I used a lawn spray to apply as recommended. There was no chance of spaying over head. I cannot tell if it worked or not yet. If the cost, I certainly hope so.
            by
              Showing 1-10 of 43 reviews

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              Interior/Exterior

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