You are here:

Deco 20 Seal: Concrete Waterproofing Membrane


• Approved by the International Building Code  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.

Technical Info


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.

Other Construction Products You Might Like

Deco 20 Seal

a concrete structure being made

Waterproofing Membrane for masonry, pre-cast and poured concrete foundation walls

Deco 20 Dampproof

Deco 20 Dampproof - Foundation Dampproof for masonry block & poured concrete walls | Deco Products | Product Image

Dampproofs and seals residential masonry block and concrete foundation walls.

DECO 20 Clear Sealer

a man spraying solution on a brick wall

For dampproofing of masonry block, pre-cast and poured concrete foundation walls

Deco Tie Patch

DECO Tie Patch for concrete | Deco Products

Advanced hybrid acrylic resin patching material used to fill holes and recesses from the removal of concrete form ties

Deco Healthy Walls

A man spraying solution on a brick wall

Non-hazardous penetrating concrete sealer protects interior foundation walls from moisture intrusion.

Deco Foundation Wall Guard

a concrete structure with bricks in the process of construction

Extra strength foundation waterproofing designed for use with the structural repair industry.


a worker spraying solution on a concrete wall

Waterborne Primer/Adhesive designed to promote extra bonding when unable to strip previous coatings.