• 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 coating designed to protect foundation walls from hydrostatic water pressure. Designed for poured concrete walls, ICF walls, precast and block (parged/non-parged) walls.

    • ICC classified as a waterproof material for above and below grade applications.
    • Deco Seal can be applied 1 day after forms are removed or block mortar is dry. No waiting 7 or 28 days like other products bc Deco Seal is 100% waterbased no interference w/ curing process.
    • UV resistant, No grade line issues. Tar, solvent systems cannot be applied above grade.
    • Apply from Footer Joint upto the Sill Plate - Complete Wall Protection!!
    • Seemless - Liquid applied.(No cutting, taping seams, nail guns, screws into wall - labor intensive)
    • Colors available: LIGHT GRAY or BEIGE
    • Very LOW VOC's, Non-Hazardous, Paintable, Breathable or Permeable.
    • Meets all STATES building codes in USA.
    • Easy roll on with 3/4" or 1" nap roller or airless sprayer (2500+psi & 1-2 gal. per min. flow rate)
    • No need for 6 mil. poly, dimple boards or wraps over our product when dry. If grade is rocky, shale or sharp edged, heavy clay, etc. a 1/2" or 1" white/pink/blue foam board as a "Protection Board" (not part of the waterproofing system) can be placed over Deco Seal when dry.
    • Elasticity testing to bridge a crack up to 1/8"
    • Designed for DIY, professional applicators, poured wall/concrete contractors, masons, etc.

    Most waterproofing products are solvent based or water emulsified. That just means water is added to a solvent based polymer. It's still solvent based just labeled water based or emulsified. Not healthy.


    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 8 Reviews:

    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)


    Foundation Wall

    I liked your Deco Seal Membrane so much or should I use the word, well?) that I called you all back as soon as I finished using the product!!

    It was so easy and quick to use and clean up. I used a 3/4" roller. I would highly recommend this product to others, and actually have already.

    Keep up the good work!


    Connie Knurr

    Peoria, IL

    Deco Seal

    We bought an older home this spring and unfortunately I am seeing water on my downstairs interior wall. The previous owner put some kind of white paint on the wall probably Drylok but it's peeling off. I did some internet work and called several companies. I have to say dealing with Mark was very informative. He must have spend 45 minutes on my first call to him. I ended up doing most of this project myself. I hired an excavator to take the dirt away from the outside wall. I scraped the dirt of the block, cleaned it with wet rags then applied two different Deco coatings. The first was TAC which rolled on easily then it turned clear and sticky. I rolled on two coats of Seal the gray color. It was easy to apply their product. I really like that I could paint their product over the block that was exposed. Looks so so much nicer. I had a friend help me install a new drain system. It's been almost two months now and my inside wall is dry. This product saved me alot of money doing it myself. The one basement co. wanted over $9000...what a joke. Thanks again Mark!!

    PA, DE & MD

    Deco Seal 25+yrs

    We are a foundation wall coatings applicator - We have been using Deco Seal since the early 90's. What we like best about this product is 2 fold. Seal provides waterproof protection and also can be sprayed from the top of the foundation to the footer in a uniform pattern to cover up the imperfections on the wall to make it aesthetically appealing. Unfortunately we have to spray what the builders tell us but if we are allowed to recommend or quote a product we prefer Seal. Compared to black materials Seal is our favorite product to apply and it's the highest quality material in our view for residential and small/mid-size commercial projects.

    Bethlehem, PA

    Deco Seal Tan

    Dear Mark,

    I just wanted to write and say thank you for your time you spent on the phone with me a couple weeks ago. I ended up going to a local stocking distributor to pick up some Deco Tie Patch, Deco Tac, and Deco Sealer (tan).

    Over the long weekend I dug a trench about 20 feet long around the corner of my foundation (cinder block) where I was having water issues.

    The product was very easy to use and straight forward. Because I was working in tight quarters (my trench was no more than shoulder width since I dug it out by hand) it was nice to be using product with low odor etc…

    After applying two coats we put 1.5 inch foam insulation board down to protect the sealant from the clay soil we have in our yard. Everything looks great and the tan color looks much better on the part of the foundation that is above grade!

    I do have some of the tan deco sealant left. I was curious if I can apply this on the inside of our basement walls?

    Again thank you for your time and help and also for the outstanding customer service and enjoy the rest of your day.


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    Item #: DS5