Grey Coat

grey coat application2Gray-Coat All Season Formula is a water based, liquid applied rubber waterproofing that can be applied all year round without heating. It is an ideal coating for concrete or block because its gray color blends in so over-spraying is no longer a problem for the applicator. In addition, it can also be used with ICF because it does not contain any damaging solvents. The product cures to form a seamless, non-deteriorating rubber membrane that will bridge small settlement cracks in concrete or joins in ICF forms.

For winter application, Gray-Coat ASF is highly resistant to freeze/thaw and can be applied in temperatures as low as 10F. Providing the pails have been stored in an enclosed, heated space, the product can be taken to the job site and applied without the need to heat it first. The pails should be protected from the cold on the job site and insulating the hoses improves the spray pattern. The newly applied product should be protected from frost or precipitation during the first 24 hours and the foundation can then be back-filled after allowing the product to cure for 24-36 hours.

Gray-Coat ASF waterproofing comes ready to use without the need of a primer and can be applied with an airless sprayer, brush or roller. Its smooth texture and non-sag formulation make it suitable for vertical or sloped surfaces and its excellent adhesion ensure that it bonds firmly with all substrates.



Water Based, Highly Flexible, Liquid Rubber Waterproofing Membrane for Residential & Commercial Construction
with a 30 Year Warranty!

Gray-Coat is a water-based, liquid, cold applied, gray rubber waterproofing membrane that can be applied in temperatures as low as 10F. Aquaseal has developed this unique product for waterproofing ICF (Insulated Concrete Forms) as well as traditional foundations and other substrates in the Residential & Commercial construction industry. Gray-Coat is solvent free and non-flammable and forms a highly flexible monolithic waterproofing membrane. It has excellent adhesion properties, not only on ICF forms and EPS blocks, but also concrete (both new and existing), and cures to form a water and vapor proof coating. Gray-Coat is #1 in quality and performance, and its ‘gray’ color means it blends in with concrete and cement and eliminates the problem of overspray.

• Ready to use – no priming or heating required
• Spray applied – or with brush or roller
• Gray in color – no more problem of unsightly “overspray”
Flexible up to 500%
• 30 Year Warranty on product
• Adheres to virtually all building substrates
• UV resistant (up to 18 months exposure)
• Nontoxic and VOC compliant in ALL States and Canada
Solvent free and non-flammable
• Water and air barrier protection
• Cleans up with water
• Very good coverage – 200sf per 5 gal. pail
• Long shelf life (3+ years)
• Prevents the ingress of radon and other harmful gases
• Use on above and below grade applications, horizontal or vertical surfaces
• In accordance with ICC-AC29, Gray-Coat is applied at a thickness of 60mil wet and cures to a minimum 40mil when dry

Gray-Coat meets and/or exceeds all waterproofing standards: ASTM C836-89, BOCA National Building Code, Standard Building Code & Uniform Building Code, and the new ICC-AC29

Area to be covered should be clean and free of dust or loose material. Gray-Coat’s excellent adhesion, without the need for a primer, ensures that it bonds firmly with all substrates, including ‘green’ concrete. However, Gray-Coat should not be applied if rain or snow is forecast in the next 24 hour period, to ensure ample time for full curing.

The approximate application rate is 200sf per 5 gal. pail. This will yield a wet film thickness of 60mil which will cure to a dry film thickness of 40mil.

Stir product prior to use. Gray-Coat is best applied with a standard airless sprayer, brush or roller (contact Aquaseal for sprayer specifications or visit our website – For best results when applying in temperatures below 32F, pails should be protected from the cold to prevent product freezing.

Ideal drying temperature is +35F. Under standard conditions Gray-Coat will be tack free within 2-5 hours, fully dry within 24 hours, and backfilling can then take place. In temperatures below freezing, allow 36 hours before backfilling. The use of protection or drainage board is not required but is recommended in areas with poor draining soil, possible flooding or seismic activity, or where local building codes require it.

GRAY-COAT is not designed to perform as a wearing course or for permanent exposure. Newly applied Gray-Coat should be protected from rain and snow during the first 24 hours.

Gray-Coat comes in 5 gallon pails (18.9 L) or 55 gallon (200 L) drums.

Keep containers tightly closed and stored in temperatures between 35F and 150F. If kept as stated, the shelf life of Gray-Coat is 36+ months. If product freezes, thaw and stir well prior to use.

Uncured material can be cleaned off with soap and water. Once cured use mineral spirits.

Gray-Coat is non-toxic, but it is recommended that the applicator wear protective work clothing, including eye goggles. Avoid prolonged contact with exposed skin, and keep away from mouth and eyes. If swallowed, do not induce vomiting and seek medical attention immediately. KEEP OUT OF REACH OF CHILDREN.

It is the responsibility of the customer to determine the suitability of this product for the intended purpose. Factors such as the weather, surface conditions, and applicator’s skill are beyond the control of the manufacturer. Therefore, the manufacturer’s liability is limited to the replacement of the defective material only, Contact Aquaseal for details of our unique 30 year warranty + our 20 year “dry basement” guarantee.

Solids 56%
Color Gray
Bond strength (to concrete) 68 psi
Tensile strength 49 psi
Recovery 72%
Bonding (ICF & Concrete) ASTM C-836-76 Tear off 38 psi
Hydrostatic Resistance ASTM D-751 Passed
Permeability .0120 perms
Toxicity Non toxic
Hardness Shore A – ASTM D-2240 62
Elongation 450%
Moisture Vapor Transmission .0059 grm/sq.ft/hr
Hardness Shore A – ASTM D-2240 ASTM C836-89, Section 5.5 = Passed
Weight Loss ASTM C836-89, Section 5.6 = Passed
Low Temperature Flexibility & Cracking ASTM C836-89, Section 5.7 = Passed – no cracking
Film Thickness on Vertical Surface ASTM C836-89, Section 5.9 = Passed
Adhesion in Peel after Water Immersion ASTM C794 = Passed
Extensibility after Heat Aging, minimum ASTM C836-89, Section 5.12 = Passed – no cracking
Resistance to Decay ASTM E-154-88, Section 13 = Passed – no rupture or cracking after stretching to 125% of original dimension.  Pinholes or other perforations also denote failure
Water Vapor Permeance ASTM D96-80, Water Method = Passed – Maximum 1 perm
Water Absorption ICC AC-29, Section 4.3 = Passed – 1.0% maximum
Hydrostatic Pressure Resistance ICC-AC29, Section 4.4 = Passed – 50% of lowest pressure achieved

Manufactured in the USA and Canada by Aquaseal USA, Inc.
117 Vosburg Road, Mechanicville, New York 12118
Phone: 518-664-0042  Toll Free: 877-AQUASEAL  or  877-278-2732


What Product Is Right For Me?

Aqua Seal has products for the interior and exterior of your home. Start here to see what product best suits your home.

What Our Customers Think / Testimonials

Our customers often provide the best feedback about Aqual Seal products. See what they have to say about us.

MSDS - Material Safety Data Sheets

Would you like to know what is in our products? Take a look at the Material Data Safety Sheets.


Contact Us

We would like the opportunity to assist you. Contact us for assistance from one of our professionals.


You may find answers to your questions here…feel free to browse our Frequently Asked Questions prior to calling. We’ve shared many of our prior customer’s questions here with you.


Do you want to be sure your money is being spent wisely on quality products and services?  Aquaseal offers a 30 year product warranty.

Find Out More!

Contact us now to find out which product will protect your home from moisture infiltration.