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Deco 20 Clear Concrete Sealer Matte Finish

Quick Overview

  • Reactive sealer designed to seal and protect concrete from water, Reduces Mildew Growth
  • Matte Perfection: Deco 20 offers a clear matte finish that penetrates and protects concrete, pavers, and more without a shine or film, preserving the natural beauty of the surfaces
  • Efficiency and Reliability: A single application of this water-based sealer reduces mildew growth, dries quickly, and provides enduring protection on new and existing construction.
  • Versatile Protection: From poured concrete to roof tiles, Deco 20 shields against weather and moisture damage, extending the life of various cementitious materials
  • Seals concrete, pavers, tile roofing, and brick, Completely water-based • No Color Fade • UV Resistant, When applied to interior foundations may reduce musty smells.

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Item #: 320-716  UPC : 00669893031067  MPN : DECO 20



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Deco 20 Clear Matte Finish Penetrating Concrete Sealer

Seals and Protects With No Shine or Film

Deco 20 is a non-hazardous reactive clear sealer designed to seal and protect concrete surfaces, pavers and similar materials from the damaging effects of water.  DECO 20 clear sealer is a special formulated penetrating sealer designed for the environmental requirements in the damp proofing industry. DECO 20 clear sealer produces a highly effective breathable moisture barrier, by reducing water vapor transmission.

Non-Hazardous - Totally Water-Based

Enhanced Protection with a Matte Finish: Deco 20 Clear Matte Finish Penetrating Concrete Sealer offers an exceptional solution to safeguard concrete surfaces, pavers, and more from the harmful effects of moisture without leaving any unsightly shine or film. It's the perfect choice for those who want to protect their valuable assets while maintaining a natural, matte appearance.

Reactive and Environmentally Friendly: Deco 20 is not just a sealer; it's a non-hazardous, environmentally conscious choice. Its specialized formulation is designed to meet the stringent requirements of the damp proofing industry. By creating a breathable moisture barrier, it effectively reduces water vapor transmission and safeguards against weather and moisture damage.

Versatile Protection for Various Substrates: This clear sealer is a versatile solution that offers protection to a wide range of surfaces, including poured concrete, concrete pavers, roof tiles, grout lines, and more. It shields these surfaces from the harsh effects of the elements, ensuring they maintain their integrity and aesthetics.

Long-Lasting and UV Resistant: Deco 20 Clear Matte Finish Sealer is not only water-based and non-hazardous but also UV resistant, which means it won't fade or deteriorate when exposed to sunlight. Its longevity and durability ensure your surfaces stay protected for an extended period, reducing the need for frequent reapplication.

Efficient and Easy Application: Deco 20 is a highly efficient solution that offers convenience to users. With a quick drying time of 2 to 4 hours and the need for only one application, it streamlines your sealing process. It can be used for both interior and exterior applications and can even be painted or coated over, providing flexibility and adaptability for your projects. Plus, it's non-toxic and non-flammable, making it a safe choice for various construction needs. With one container sealing approximately 1,500 square feet, Deco 20 offers cost-effective protection for your concrete surfaces, making it a smart investment in their longevity and beauty.

  • Protect and preserve 
  • Poured concrete,
  • Concrete pavers
  • Roof Tiles, Barrel Tile, Mission Tile
  • Concrete grout lines 
  • Any cementitious substrates 

Protects from the damaging effects of weather and moisture intrusion.

Completely water-based • No Color Fade • UV Resistant


New & Existing Construction: Dampproofs and seals masonry block, pre-cast and poured concrete walls. DECO 20 clear sealer can be used on the interior of existing concrete and masonry block foundation walls.

  • Reduces mildew growth
  • Dries Clear is non- yellowing and has a very low odor
  • Dries in 2 to 4 hours
  • Only one application required
  • Interior or exterior use
  • Can be painted or coated over
  • Unaffected by Ultraviolet rays
  • Non- toxic Non- hazardous Non- flammable
  • Works on new & existing construction:

100% transparent Deco 20 can dramatically reduce mildew growth on roofs, sidewalks, patios, and other concrete surfaces by sealing out the water   The clear finish is perfect on sidewalks, retaining walls, chimneys, foundations, and more.

Seals and protects approximately 1,500 square feet.

Concrete Coatings that are easy to apply and safe for the environment, use on any cementitious substrate to create moisture barrier.

Use on concrete driveways, sidewalks, and walkways.

This concrete clear sealer is easily applied with a handheld pump or air sprayer. 

Only one coat is required! 

Building Owners can have peace of mind knowing this products is environmentally friendly. 

Deco 20 concrete sealer is non-hazardous and safe for humans and animals, the product is water-based and presents no harm unlike products that are based on solvents for concrete sealeing. 

Unlike Tar sealers the concrete aesthetic is maintained, sealing concrete can reduce the harmful mildew and mold growth on concrete.

With over 20 years on the market, Deco 20 concrete sealer is a great time tested products that can be counted on.


Apply DECO 20 CLEAR FINISH, without dilution, with a hand pump sprayer or airless sprayer. 

For spraying application, and depending upon sprayer equipment used, it is recommended that an orifice size of 0.035 inches be used for as a starting point and then testing to get the best spray pattern from there to insure proper, use a conical  or flat spray nozzle. Apply Deco 20 Clear Finish to any concrete surface to seal and protect surface from the damaging effects caused by water infiltration.

  • Do not apply at over 100 PSI. 
  • Apply until saturation. 
  • Do not interrupt application
  • Process the entire area until area is completely treated.
  • Equipment cleans up easily with soap and water.
  • Best applied when the weather is above 40 degrees Fahrenheit
  • DECO 20 can be applied directly to block walls after the mortar joints and parging has taken its initial set.



NOTE: Coverage rates may vary due to the porosity of the substrate.

375 Sq. Ft. Per gallon
Masonry Block
175 Sq. Ft. Per gallon
Concrete Tiles
375 Sq. Ft. Per gallon
375 Sq. Ft. Per gallon


  • CANNOT BE REMOVED. If DECO 20 comes in contact with glass, clean immediately with water.
  • Do not let product freeze. Store indoors at temperatures above  32 degrees Fahrenheit. 
  • Application the ambient temperature must be 28 degrees Fahrenheit and rising before application.
  • Do not dilute.
  • Do not apply when there is a threat of rain.
  • Do not apply on glazed tile, slate, glazed brick construction, acrylics or painted finishes. 
  • Do not use on colored concrete. 
  • This Sealer will not plug holes or cracks. 
  • Cover all doors and glass openings to insure product does not come in contact. 
  • Use caution when applying on windy days. 
  • DECO 20 is not designed to be used as a waterproofing coating to stop moisture penetration caused by cracks or holes in the surface.
  • The use of DECO 20 on foundations in no way eliminates the use of a properly installed drainage system designed for the foundation wall or properly constructed concrete foundation wall. 

Specifications and Test Data:

Meets and/or exceeds the following ASTM tests:

  • ASTM D 2939 - Resistance to water solubility.  Flexibility no cracking.
  • ASTM D 466 - Resistance to water flow and action. Excellent adhesion. No reemulsification.
  • ASTM E 96 - Water vapor transmission. - 0.04 grains/sq.ft./hour Water vapor permeability. - 0.102 perms
  • ASTM C 836 - Film Thickness On Vertical Surface. 
  • SS-W-110 C - Water Repellency On Masonry Test.  1.925% Average
  • ASTM C 672 - Freeze/Thaw - 20 Day Cycle

Proposition 65 requires businesses to provide warnings to Californians about significant exposures to chemicals that cause cancer, birth defects or other reproductive harm.  These chemicals can be in the products that Californians purchase, in their homes or workplaces, or that are released into the environment. By requiring that this information be provided, Proposition 65 enables Californians to make informed decisions about their exposures to these chemicals. Proposition 65 also prohibits California businesses from knowingly discharging significant amounts of listed chemicals into sources of drinking water. Proposition 65 requires California to publish a list of chemicals known to cause cancer, birth defects or other reproductive harm. This list, which must be updated at least once a year, has grown to include approximately 900 chemicals since it was first published in 1987. Proposition 65 became law in November 1986, when California voters approved it by a 63-37 percent margin.  The official name of Proposition 65 is the Safe Drinking Water and Toxic Enforcement Act of 1986.

The list of chemicals contains a wide range of naturally occurring and synthetic chemicals that include additives or ingredients in pesticides, common household products, food, drugs, dyes, or solvents. Listed chemicals may also be used in manufacturing and construction, or they may be byproducts of chemical processes, such as motor vehicle exhaust.  For more information visit www.p65warnings.ca.gov/