• Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
  • Deco Seal Waterproof Membrane 5 gal. (Shipping Incl) - DS5
Price: $205.00

    Deco Seal is a 100% water-based acrylic membrane designed to waterproof and protect concrete foundation walls from hydrostatic water pressure. These can be, Poured, ICF, Precast, or Block (parged/non-parged) foundation walls.


    Deco Seal is environmentally safe, contains no harsh chemicals, and is safe to use. The majority of foundation products are labeled “water-based” solvents or “water-emulsified” tar. This is due to water being added to make these products appear “eco-friendly” and/or “safe” to apply, but in most cases need use of a respirator because even though water was added, it still contains harmful chemicals.

    • ICC Approved as an Above & Below Grade Waterproof Material.
    • Applicable 1 day after form removal or block mortar is dry.
    • 100% Water-Based = No waiting 7 or 28 days for curing process.
    • UV Resistant & No Grade Lines = Tar/Solvents can’t be applied above grade.
    • Apply from Footer Joint to the Sill Plate = Complete Wall Protection.
    • Seamless & Liquid Applied = No cutting or taping of seams or nails/screws into wall.
    • Non-Hazardous, Paintable, Breathable/Permeable
    • Meets ALL states building codes in the U.S.A.
    • Applicable with ¾” or 1” nap roller or airless sprayer (2500+psi & 1-2gal./min flow rate)
    • Boards, Wraps, or 6 mil. poly are not required or apart of our waterproofing system.
    • “IF” grade is rocky/heavy clay use ½” or 1” foam board as protection against grade when Deco Seal dries.
    • Bridges cracks up to ⅛” due to elasticity.
    • Designed for DIY, Professional Applicators, Poured Wall Contractors, Masons etc.


    Deco SEAL Applications

    Foundation Walls:

    • CMU Block, Precast, Poured Concrete, ICF & Styrofoam Walls.
    • Parged Block * (also known as a mortar scratch coat over CMU block)
    • Open or Exposed Walls and Tapered Grade Lines. Esthetic Looking!


    • Remove all dirt, dust, oils, foreign material which is to be coated.
    • Fill or repair any cracks, honeycomb, wall ties, holes, etc. with Deco Tie Patch or concrete repair caulk/patch.
    • New Construction - Surface must be dry to allow for proper adhesion. Can be applied on green concrete. The American Concrete institute (ACI) defines green concrete that has set but not appreciably hardened.
    • Use 2000+ PSI airless sprayer w/ flow rate of 1-2 gallons per minute. Apply first coat w/ no run downs and if you can apply second coat at starting point and second coat holds w/ no run downs apply. Otherwise let first coat set until second coat can be applied.
    • Roll On - Use 3/4" or 1" nap roller and apply on surface evenly but do not product run down or your applying to heavy. Apply one coat let dry then apply second coat.
    • Protection Boards - Optional if grade is heavy clay, rocky/shale we recommend a pink/blue board. Apply liquid nails on board and place against the wall over Deco Seal.
    • Temperature of 32-95 degrees otherwise cold or evaporation will affect Deco Seal dry/curing and/or coverage rate
    • Do not apply with the threat of imminent rain. Perform test to insure desired results.
    • Dry cure rate is 12 hours. Dependent on temperature, airflow, humidity. Do not backfill grade until Deco Seal is dry.

    * Specifications require Deco 20 Clear Sealer to be applied first on non-parged block walls only. Allow Deco 20 to dry then apply Deco Seal. Deco 20 is a primer and increases adhesion.

    Deco SEAL Technical Information

    ICC (International Code Council) Classification:

    • An evaluated and approved waterproof material above and below grade

    Deco Seal Characteristics:

    • Water based acrylic resin, smooth, opaque, Gray viscous liquid
    • Odor of a latex waterborne system
    • Non-Hazardous, Non-Toxic, Non-Carinogenic/Cancerous
    • Prolonged contact may cause irritation
    • No solvents, UV resistant, Paintable, Breathable


    • 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 applic. (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

    Reports (PDF's):

    1. Data Sheet - General Overview
    2. Applicators Guide
    3. ICC Report
    4. MSDS Report

    Coverage Rate

    • Block Construction: 50-60 sq.ft/gal.
    • Parged (concrete scratch coat) over block: 50-60 sq.ft/gal.
    • Concrete: 60-70 sq.ft/gal.
    • ICF or Styrofoam Board: 70-80 sq.ft/gal.
    • 5 GAL PAIL = 300 - 325 sq.ft coverage (incl. 2 thin coats)

    (Dependent on temperature, equipment used, surface porosity)


    Deco SEAL does not require a protection board. Tar related materials applied above grade require a protection board, taping of seams, cutting to length.

    Packaging & Colors

    • 5 gal. & 55 gal.
    • Light Gray & Beige

    Poured Concrete Walls - Deco Seal Spray Application

    Block Walls - Parged & Non-Parged, Roll On Application

    Overall Customer Rating of 12 Reviews:

    Applied 6 years ago!

    I applied this product 6 years ago, and still glad I did! As a DIY person, it was an easy application process, and the gray waterproof sealer looks so much better than a tar based membrane. So glad I found this product!


    Bone Dry - Very Impressed!

    I used this on the exterior of the block walls on my son's workshop above and below grade and the basement level is bone dry. Very impressed. I'm hopeful it will work as well controlling the moisture and mold in the basement level of my existing workshop when i spray the interior of the block walls. Thanks in advance for a great product.

    Stellar products, Customer Service & Tech Support

    Highly recommend.
    After having bad experiences with several other waterproofing products such as Dry-Lok, Blue Max Liquid Rubber, Flex-seal Liquid and more, Iwas pleasantly surprised at how easy both the Tac Primer & Gray Deco Seal was to apply, dried quickly and easy cleanup. Looks great.
    I applied both to a cement foundation with a large paint brush quickly. Deco Seal goes on easily, quickly, no drips. Felt like light pudding going on.
    I plan on using these products on more foundation waterproofing projects.
    Customer service and tech support fr owner, Mark Hines, was outstanding.
    Don’t hesitate to use these products. Much better than anything else I’ve found.

    Deco 20

    I used this product today easy to use looks great. The company is there for you if you have questions or concerns. They answered all my questions put me at ease. I wish more companies were as good as this one for customer service.

    Use of Deco Sealers

    I used 5 gallons of Deco20, then 8 gallons of Deco gray membrane above and below grade on my split-face block -on-slab garage. I applied the Deco20 with a garden sprayer and was happy when it rained the next day! The water no longer penetrated the block. The membrane was applied in two coats with a 3/4” nap roller and followed behind with a brush. The finished product is stupendous! It really looks great and I believe I made the right call as far as waterproofing. The grade is sloped into the back of the garage with free water standing during construction. No moisture has shown yet. I give the whole process a “5”. The only minor issue was that the second pail of membrane was considerably darker in color than the first, making a third coat necessary in some areas. In all, we couldn’t be happier with the result so far.

    Joe Nemmer
    (Thank you for letting us know about the color differentiation. That process will change going forward)


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    Item #: DS5