Waterproofing Concrete and Masonry
with LastiSeal Concrete & Brick Sealer

What LastiSeal™ Concrete & Brick Sealer does

1. Waterproofs – stops water seepage. Backed by a limited 10-Year Waterproofing Warranty
2. Reduces water vapor transmission and indoor humidity
3. Reduces efflorescence (“white powder”)
4. Reduces concrete dusting
5. Resistant to spills, motor oil, chemicals, acids, acid rain
6. Protects against freeze–thaw damage and road salts
7. Protects against algae and molds – fills the pores, reduces humidity
8. Protects against pitting, spalling, crumbling
9. Prep for painting – improves the adhesion of paints (oil-based, epoxy, urethanes, acrylics, but not latex) and adhesives.

LastiSeal is not available in stores but is shipped by courier directly from factory. (There are no similar sealers available in stores.)

How LastiSeal works

LastiSeal™ is a unique, state-of-the-art waterproofing sealer for concrete, bricks, stones, and porous building materials. This waterborne polyester polymer and polyurethane penetrates 2–4 inches into concrete, fills the pores, encapsulates particles, bonds the substrate, and cures as a hard plastic. It is like injecting epoxy into the pores. (Polyester is sometimes called “the other epoxy.”)

LastiSeal Concrete & Brick Sealer internally seals and waterproofs the substrate. Unlike paints or surface sealers, it does not form a surface film. It cannot peel or crack or wear off - the seal is permanent.

LastiSeal seals and waterproofs a wide range of cementitious and non-cementitious materials:

Poured concrete floors and walls, shotcrete, gunite

Internally colored concrete, acid-stained concrete

Concrete blocks, cinder blocks, CMUs, splitface blocks

Clay bricks, brick veneer, Mexican tiles, pavers

Mortar, stucco, plaster, grout

Porous natural stones, limestone 

Man-made stones.

Residential and commercial uses

Sealing porous pavers Click to enlarge!

Seals floors and walls, new or old, indoor or outdoor.

• Basements – seal the walls and floor against water, vapor, and molds
• Foundation slabs – prep for installing flooring or painting 
• Factory and warehouse floors and block walls
• Garage floors
• Retaining walls
• Exterior brick or concrete walls
• Brick veneer walls
• Driveways, sidewalks, parking areas and garages
• Patios, pool decks
• Historical brick buildings
• Chimneys, fireplaces
• Building facades
• Statues, memorials
• Bridge decks, tunnels, subways, hydroelectric dams.

Not tested for use on the inside of surfaces continually submerged in water, like pools, ponds, and tanks.

Comparison with other sealers

Permanent – Paints or surface sealants you can buy in stores will soon crack, peel, or wear off because of water or vapor pressure, saponification (reaction with lime from the concrete), efflorescence (”white powder”), and traffic. Then, you have to remove the old paint (or it will start peeling even faster) and re-paint the surface.

Paints and surface sealers are not effective against water seepage or efflorescence and in the long run, will cost you much more money (and work) than LastiSeal.

Independent of cement content – Unlike RadonSeal concrete sealer, LastiSeal does not depend on a chemical reaction with the substrate. It just fills the pores and hardens. This allows it to seal a much wider range of concretes and masonry, regardless of internal coloring or additives.

However, RadonSeal is the best sealer for standard-quality poured concrete or blocks because of its deeper and tighter seal and is guaranteed to seal also against radon gas. And it is proven for use inside ponds and reservoirs.

LastiSeal requires a dry and bare surface for application. RadonSeal is applied on damp concrete. And our Ion-Bond Armor seals even through a single layer of latex paint.

LastiSeal and LastiSeal Satin (Gloss)

"LastiSeal Concrete & Brick Sealer" disappears into the concrete, bricks or masonry, leaving no film or gloss on the surface. Unless over-applied, it does not make the surface shiny and does not make it slippery. It leaves a matte (dull) finish.

“LastiSeal Concrete & Brick Sealer – Satin (Gloss) ” is enriched with acrylics to leave an attractive low-gloss, satin finish on smoother surfaces. It also tends to be more effective in sealing larger pores in the substrate. However, it may reduce friction and make smooth surfaces slippery when wet. The pH level (alkalinity) of new concrete has to be below 10.

Shipping and Pricing

Shipped directly from factory to your doors. Normally, within a day on workdays. Delivery by courier in 3–5 working days within the lower 48 states.

Available in 5-gallon pails, 1-gallon jugs, and 8-oz. sample bottles.   

Easy and safe do-it-yourself application

The surface must be clean and dry, above 50°F but not hot in direct sunlight. Remove old paint, adhesives, and efflorescence. Let new concrete cure for at least 4 weeks. Mask glass and smooth surfaces against over-spray.

Using a hand-pump garden sprayer and a roller, saturate the surface and back-roll any puddles. Ready for foot traffic in several hours and for vehicles in 3–5 days.

LastiSeal pail labels (in PDF):

COVERAGE: Greatly depends on porosity. Approximately 200 sq. ft./gallon. Very porous materials may need a second application the next day.

TEMPERATURES: The surface and ambient air must be above 50 °F during the application. And in case of LastiSeal Gloss, the surface temperature must remain above 40 °F for at least 24 hours.

SAFETY: Non-toxic, nonflammable, and non-hazardous. No odor. Zero VOCs or very low VOCs for Gloss. Not harmful to plants, grass, or aquatic life. Check out the LastiSeal Sealer MSDS

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Any questions? Please contact us by e-mail,
telephone (203) 225-0366 or toll-free 1-800-472-0603

MADE IN USA
Products not sold through retail stores. Available exclusively from:
Radon Mitigation & Waterproofing Concrete Sealer Co.
Novion Inc., 18 L'Hermitage Drive, Shelton, CT 06484 USA
RadonSeal™ is a registered trademark. Copyright © 1998-2008. All rights reserved.

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