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Deco 20 Seal: Concrete Waterproofing Membrane

Wall Coating


• Approved by the International Code Council  Eliminates the need for 6 mil poly
• Will stop water leaks in nonstructural cracks  Standard color is gray – can be painted over
• Can be applied to damp walls  Allows for better curing of concrete walls
• Continuous coating, eliminates seams  Airless sprayer application
• Can be applied from the footing to top of wall  Reduces potential mold growth

Product Description

Deco 20 Seal is a waterproofing membrane made by Deco Products.  It is an advanced hybrid acrylic resin coating.  It is specifically designed for the demanding requirements of waterproofing foundation walls.  This includes parged and non-parged masonry, pre-cast and poured concrete. On non-parged masonry walls, DECO PRIMER must be applied prior to the application of  Deco 20 Seal. Because of the water-based nature, this product can also be applied to ICF forms. Deco 20 Seal is designed for use as a waterproof coating when hydrostatic pressure caused by the water table does exist.

New construction: Waterproofs and seals masonry,  pre-cast and poured concrete foundation walls.  For approved applicators.

View ICC Report


Deco 20 Seal waterproofing materials have been independently tested and approved by the International Code Council, a trusted organization that sets standards for building construction. This product has been used in the industry for over 25 years and has a proven track record of protecting foundations from water damage.

Technical Info

Deco 20 Seal can be Applied to

ICF and Styrofoam Forms

Deco 20 Seal meets or exceeds the following ASTM tests:
► ASTM C 1306, Hydrostatic pressure over cracks
► ASTM C 836, Section 6.7 Low-temperature flexibility and crack bridging
► ASTM C 836, Section 6.10 Adhesion strength
► ASTM D 2939, Section 15 Resistance to water
► ASTM C 836, Section 6.9 Remain in place during application (film thickness)
► ASTM E 96, Water vapor permeance (transmission)
► ASTM C 836, Section 6.12 Extensibility after heat aging
► Additional Testing Outside the Scope of AC 29
► ASTM E 154, Section 13 Resistance to decay
► ASTM D 2565-1999, Color fastness of surface coating
► ASTM D 3273-94, Resistance to mold growth of surface coating

Deco 20 Seal is warranted as specified from date of C.O. (Certificate of Occupancy).


Deco 20 Seal Technical Data Sheet

Deco 20 Seal ICC Report

Deco 20 Seal Applicators Guide

Purchase Deco 20 Seal Waterproofing from Deco Product, Inc.

Deco products, Inc. manufactures all of their products in Denver, CO but has suppliers and warehouses set up throughout the USA and in Puerto Rico. To find the nearest place to purchase please call our home office at Toll Free 1-800-500-DECO (3326) or contact us today.

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Based on 15 reviews
Excel Pressure Washing
Excel Pressure Washing
April 7, 2022.
Deco Products makes the best decorative sealers on the market! We use there products daily to enhance and restore our customers paver and hardscape projects. Deco you guys are awesome!
October 11, 2021.
Richard Paul
Richard Paul
September 26, 2021.
5 star products and company
Clint Reynolds
Clint Reynolds
September 14, 2021.
Love the sealers! I have used their Paver, Travertine, and concrete Sealers for past 6 years. Great results. I get rave reviews from our clients as a professional contractor. Customer support is a pleasure. Great team. The owner is dedicated to Education/training. All about building relationships.
John Chatham
John Chatham
September 13, 2021.
Awesome company to work with. Fast shipping and reliable. Amazing sealers
Missy Ordiway
Missy Ordiway
September 13, 2021.
We used Deco 20 Clear on my concrete patio about 4 years ago because I was having run off from my gutters which was causing mold and this product was phenomenal, you could see the water bead right off afterwards and I never had mold there again. I ended up selling that house and painted the same patio for curb appeal and it covered so nicely without using a primer because of the Deco 20. The customer service and integrity from this company and all its representatives is phenomenal, they walked me through it all happily step by step. Thanks Team Deco!
Casey Tuliano
Casey Tuliano
September 12, 2021.
I love deco products. Worked with this product many times. Every customer was very satisfied with the outcome. Highly recommend this product to everyone I come a crossed. Customer service is even better.
John Forrester
John Forrester
December 8, 2017.
I used the paver sealer product on my driveway and it is a beautiful result. I had extra product left over and gave it to a friend. He said there were tire marks on his drive and I emailed Deco for help. In less than 1 hour a representative called and told us how to fix the problem. My friend just hadn't let the product dry enough. All was easily resolved. You just can't get service like that anymore.