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Internet # 332132489

Model # WL5501GAL

Armor WL550 Penetrating Matte Wet Look Water Repellent Concrete Sealer for Concrete, Brick, Flagstone, Pavers - 1gal

$75.74
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Product Details

About This Product

The Armor WL550 is a solvent-based penetrating water repellent sealer designed to reduce damage and deterioration to concrete and masonry surfaces without leaving behind a surface film or coating. In addition to reducing the absorption of water, the Armor WL550 will also slightly enhance the color of most concrete and masonry surfaces. The Armor WL550 is a great choice if you are looking to slightly revive dull and faded coloring without having to worry about maintaining a film or coating.

Highlights

  • Works entirely below the surface and will not leave a surface film or coating
  • Chemically reacts with the substrate to form a water repellent barrier below the surface that can reduce the absorption of water and other liquids by up to 95%
  • Won't yellow, peel, flake, or fake - no film or coating to maintain
  • Easy to apply with a pump sprayer - easy to maintain. One gallon will cover up to 175-225 square feet in one coat
  • Surfaces sealed with the Armor WL550 are more resistant to damage and deterioration caused by water absorption including cracking, spalling, ice damage, salt damage, organic surface growth and staining
  • Designed specifically for surfaces with a variation in colors that need a very slight color enhancement such as brick, integrally colored pavers, flagstone, bluestone, integrally colored stamped concrete, and other types of natural stone
  • This product should not be used on broom finished concrete, uncolored concrete, uncolored pavers, or any substrate that doesn't have a variation in color. If you need a consistent or dramatic wet look finish and are looking to seal concrete or concrete pavers, the Armor AR350 or Armor AR500 are better alternatives
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Product Information

Internet # 332132489

Model # WL5501GAL

Additional Resources

Shop All Foundation Armor

Specifications

Dimensions

Container Size

1 Gallon

Coverage Area (sq. ft.)

175 sq ft

Details

Application

Concrete Waterproofer/Sealer

Application Method

Pump-up Sprayer

Base Material

Oil Based

Color Family

Clear

Color/Finish

Wet Look Matte

Dry To Touch Time (hh:mm)

02:00

Finish Family

Matte

Interior/Exterior

Exterior, Interior

Maximum hydrostatic pressure (lb.)

0

Maximum Optimal Temperature (F)

85

Minimum Optimal Temperature (F)

55

Number per Package

1

Paint/Stain Features

Sealer

Recommended Number of Coats

1

Returnable

90-Day

Substrate/Surface Material Use

Brick, Cement, Concrete, Stone

Surface Location

Driveway, Exterior Wall, Patio, Pavers, Pool Deck

Transparency

Clear

Vertical/Horizontal

Vertical / Horizontal

Questions & Answers

Should I use 350 or the 550 on concrete Rumblestone pavets
ByAug 11, 2026
1 Answer | 
Answer This Question

Several coats of the AR350 will usually give better color enhancement than the WL550 which is thinner than water with more of a subtle enhancement.

By|Aug 11, 2026


    Can you use a [paint] roller to apply or use a typical pump sprayer such as what you use for say weed/bug spray?
    ByJun 15, 2026
    1 Answer | 
    Answer This Question

    The WL550 penetrating sealer is thinner than water and has a high concentration of acetone. It drips excessively if you attempt to roll it on. If you spray it, the sprayer needs to be an acetone pump sprayer with EPDM rubber seals and hose. Acetone will damage seals and hose on a cheaper sprayer (will stop working quickly).

    By|Jun 16, 2026


      Does this product go 175 sqft per gallon or per 5 gallons. Is this product sold in gallons or 5 gallons
      ByApr 14, 2026
      1 Answer | 
      Answer This Question

      Coverage can vary depending on a surface's porosity. The coverage listed is a 175 square feet per gallon with one coat. Some surfaces are very porous and may require two coats. Usually, a gallon covers around 100 square feet with two coats. Denser/less porous substrates such as stone often require less sealer and may only require a single coat instead of two coats. It's always best to test a small area prior to full application.

      By|Apr 15, 2026


        What is the proper way to apply this sealer?
        ByAug 10, 2025
        1 Answer | 
        Answer This Question

        Foundation Armor recommends applying the WL550 with an acetone resistant hand-pump sprayer such as the Armor Sprayer. A sprayer should be fitted with EPDM seals, hose and a 1/2 gallon per minute nozzle. Following application, a sprayer should be flushed with acetone.

        By|Aug 12, 2025


          How many sqft will a gallon jug cover of flagstine?
          ByAug 5, 2025
          1 Answer | 
          Answer This Question

          Coverage can vary depending upon a surface's porosity. If the surface is dense/less porous and only requires one coat, a gallon could cover 250+ square feet. If a surface is slightly more porous and requires two coats, a gallon might only cover 100 square feet with two coats.

          By|Aug 5, 2025


            Can this product be used on a slate patio, and will it darken the slates color?
            ByJul 24, 2025
            1 Answer | 
            Answer This Question

            The WL550 can be applied to natural stone such as slate. Slate is a very dense stone and might only be able to accept one coat. If needed, run a small test, when properly applied, the WL550 should not develop a gloss finish (just color enhancement).

            By|Jul 24, 2025


              How long after the concrete is poured do you have to wait to use this sealer?
              ByJul 18, 2025
              1 Answer | 
              Answer This Question

              It's best to wait 28 days before applying the WL550.

              By|Jul 21, 2025


                Does this make the pavers slippery when wet
                ByFeb 25, 2025
                1 Answer | 
                Answer This Question

                When properly applied, the WL550 should not make a surface slippery. It's always best to test a small, inconspicuous area prior to full application.

                By|Feb 26, 2025


                  Viewing 1-8 of 9

                  Customer Reviews

                  4.9 out of 5

                  • 4.9 out of 135 reviews
                  • 95% recommend this product
                  Filter by:
                  Showing 1-10 of 135 reviews
                  Excellent Product!
                  Foundation Armor WL550 is an excellent product. I was looking for a sealer made for natural stone that would give the darker, rich color of wet stones without the glossy finish, and that is exactly what I got. It was easy to apply with the right sprayer. I treated over 800 square feet of natural stone foundation veneer and 300 square feet of flagstone patio in less than 2 hours. The smell of the solvent base was strong, but dissipated quickly. The end result is beautiful, the stones no longer absorb water, and it didn't make the patio slippery. I highly recommend this product!
                  by
                    • Recommended
                    Excellent Natural Stone Enhancer and Sealer
                    I used Foundation Armor WL550 in 2021 on my flagstone patio, and it's time to recoat, as it is starting to fade. All sealers must be recoated every 3-5 years. Because my patio in Sacramento, CA, gets intense sunlight it tends to fade faster than usual. I purchased trial sizes of the WL550 with BDStoneworks Black Diamond Enhancer Sealer, which is a water-based sealer, and compared the two. Both provided excellent stone enhancement. The BD sealer, however, requires wiping off excess sealer after 10 minutes, whereas the WL550 did not. For a big job, that's more work. The price point for both products is similar, but I will go with the Foundation Armor because it's solvent-based, which I feel provides deeper penetration in the stone and my positive experience with it.
                    by
                      WL500 concrete sealer
                      [This review was collected as part of a promotion.] The product was easy to install covered Great it is exactly as advertised. It left a great new look to our new stamped concrete driveway. I would recommend it !
                      by
                        • Recommended
                        AMAZING PRODUCT - Flagstone POPs
                        AMAZING product….. flagstone walkway and around outdoor fireplace POPS…..still has same texture…. No slipping…… only needed one coat Sandblasted colored concrete pops again! Very easy to apply with sprayer 💯. EXCELLENT CUSTOMER SERVICE 💯🙏 Will use additional sealer for my driveway.
                        by
                          Bring back life
                          We have real old Chicago brick in our TV room that needed life restored to it. And we also have 2 outside brick walkways that also need life restored to them and this product work GREAT! My wife is extremely please as am I. I would recommend this to anyone looking to restore back in brick, travertine or natural stone. I also used it on those surfaces.
                          by
                          • Verified Purchase
                          • Recommended
                          Great to deepen the color of your pavers
                          This product works great and really transformed my brick pavers. They had taken on a pinkish hue which I really disliked and this sealer deepened the color and waterproofed them at the same time. I also was really impressed by the quick shipping. Only issue I had was the pressure sprayer. This product wore away/melted the plastic in the spray tube.
                          by
                          • Verified Purchase
                          • Recommended
                          This customer chose to rate the product and not provide text.
                          by
                          • Verified Purchase
                          This customer chose to rate the product and not provide text.
                          by
                          • Verified Purchase
                          Used 2 gallons for 180 sq ft @ $160 and there is no difference from before the sealant . I followed all instructions, surface was clean and dried. Would not use this product again
                          by
                          Response from Foundation ArmorJul 3, 2026
                          Hi Carlie! If you wouldn't mind reaching out to us directly, we would love to figure out what you have going on. This material is very predictable, and usually within a couple of minutes we can help you figure out what happened with your application - and help you get the enhancement you were looking for! We hope to hear from you! Just remember, we are always just a phone call away and are always here to help!
                          • Verified Purchase
                          This customer chose to rate the product and not provide text.
                          by
                          • Verified Purchase
                          Showing 1-10 of 135 reviews

                          Compare Key Features

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                          Product Snapshot

                          Ideal for enhancing and protecting concrete, brick, and stone with a matte wet look and long-lasting water repellency.
                          Ideal for concrete surfaces, this sealer densifies, hardens, and offers UV and abrasion resistance for enhanced durability.
                          Ideal for patching, repairing, or resurfacing concrete, masonry, stucco, and brick. Waterproofs and provides exceptional strength and adhesion.
                          Ideal for sealing cracks, holes, and joints in concrete, masonry, and more. Stops flowing water and provides a durable, waterproof seal.

                          Coverage Area

                          175-225 sq. ft./gal
                          800 sq ft/gallon
                          25 sq ft
                          50 sq ft

                          Water Resistance

                          UV Protection

                          Drying Time

                          2 hours
                          6 hours
                          4 hours
                          3 hours

                          Slip Resistance