Waterproofing Concrete and Masonry
with LastiSeal Concrete & Brick Sealer

What LastiSeal™ Concrete & Brick Sealer does

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

LastiSeal is not available in stores but is shipped by courier directly from the 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 sealer penetrates 2–4 inches into concrete, fills the pores, encapsulates particles, bonds the substrate, and cures as a hard plastic. It's like injecting epoxy into the pores. (Polyester is called the "poor man's epoxy.”)

LastiSeal Concrete & Brick Sealer internally seals and waterproofs the surface. Unlike paints or surface sealers, it does not form a surface film. It cannot peel or crack or wear off – the seal is permanent. The surface sheds water and unless too rough, beads.

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 (unless the pores are too large)

Clay bricks, brick veneer, Mexican tiles, pavers

Mortar, stucco, plaster, grout

Porous natural or man-made stones, limestone.

Residential and commercial uses

Sealing porous pavers Click to enlarge!

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

• Driveways, sidewalks, parking areas
• Patios, pool decks
• Garage floors
• Exterior brick or concrete walls
• Brick veneer walls
• Historical brick buildings
• Brick chimneys, fireplaces
• Factory and warehouse floors
• Building facades
• Statues, memorials

Not tested for use on 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 UV-rays, 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.

Water-repellent sealers sold in stores have to be re-applied every year and in the long run, will cost you much more than LastiSeal.

Not dependent on 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 internally colored concretes and fibercrete.

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

LastiSeal requires a dry and bare surface for application, while RadonSeal is applied on damp surface.

LastiSeal leaves the surface paintable except for latex paints or silicone. Since the pores are filled, stucco, thinset, mortar, or patching compounds do not adhere well.

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. 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, the same or next workday. Delivery by courier within 3–5 workdays in the lower 48 states.

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

Sealer	Size	Price	S&H
LastiSeal	5–gallon pail	10% OFF (was $199) $179	$24
	1–gallon jug	$44	$9
	8–oz. sample	$9.90	$6.10
LastiSeal - Satin	5–gallon pail	10% OFF (was $224) $199	$24
	1–gallon jug	$49	$9
	8–oz. sample	$9.90	$6.10

Based on shipping by courier to the lower 48 states.
Returns are not accepted – if unsure, please use a test sample first.

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, oil stains, and efflorescence. Let new concrete cure for at least 4 weeks. Mask glass and finished surfaces against over-spray.

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

LastiSeal plain and satin pail labels (in PDF): 

COVERAGE: Greatly depends on porosity. Typically 200 sq. ft./gallon on poured concrete. Very porous materials may need a second or more applications a day apart.

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. Ultra-low VOCs. Not harmful to plants, grass, or aquatic life. Check out LastiSeal MSDS, LastiSeal Spec, LastiSeal Satin MSDS, LastiSeal Satin Spec.