Foundations Exterior Below Grade

What You Need:

Peel and Stick Seam Tape     Blue Max 5 gallon          Block and Wall Liquid Rubber 5 gallon

Detailed Application Instructions

Products: Ames® Blue Max®Ames® Block & Wall Liquid RubberAmes® Peel & Stick Seam Tape


Both Ames® Blue Max and Block & Wall Liquid Rubber can be applied with a paint brush, a push broom, a low nap roller with a long handle or a Commercial Airless Sprayer.  In addition, you will need Ames® Peel & Stick Seam Tape and scissors or a utility knife.  For larger commercial jobs, we recommend an airless sprayer with a 3/8 inch, 150 foot hose. Click Here for Sprayer Specifications


Be sure surfaces are clean and dry before the coating application. Read all label instructions before beginning. Always run a test patch first in an inconspicuous area to ensure that proper adhesion and drying occurs and the product works to your satisfaction.


Directions are the same for both Ames® Blue Max and Block & Wall Liquid Rubber.  They do not need a primer.  Caulk all cracks greater than 1/8″ wide with Ames’ Blue Max trowel-grade. Surfaces with joints, cracks, or where two unlike surfaces come together, require Ames® Peel & Stick Seam Tape (PS250, PS450 or PS650) to provide some additional strength and reinforcement. It is important to seam tape all joints and cracks to avoid future cracking and leaking. Prime all surfaces generously with Ames’® Blue Max prior to setting the Seam Tape in place.  Apply a liberal topcoat of Ames’® Blue Max or Block & Wall Liquid Rubber over the Seam Tape and allow to cure.

Weather & Drying Guidelines:

Block & Wall Liquid Rubber is best applied between 50° to 90° F (10° to 32° C) on warm dry surfaces. For exterior applications apply when the streets are dry, the sun is in the sky and no inclement weather is forecast. Starts to dry in 30 minutes to 2 hours, depending on thickness of application and weather. It continues to cure for up to 2 weeks. A slight tack is normal after drying. Low temperatures, high humidity and evening and morning dew will require increased drying/curing time.

Estimated Coverage:

We recommend 2 gallons per 100 Sq. Ft. Blue Max, then 2 coats (each coat approximately 1 gallon per 300-500 Sq. Ft.) of 2 gallons  per 100 Sq. Ft. of Block & Wall™ Acrylic. Rough surfaces could require additional product and drying time.

Clean-up, Storage, and Disposal:

Clean tools and small spills with water. Store unused product in its original container, tightly sealed and protected from freezing. Dispose of this product in accordance with local, state, or federal requirements.


Information Library
How to Waterproof a Commercial Basement with Dr. Ames (audio)
How to Waterproof a Basement with Dr. Ames Part 1 (audio)
How to Waterproof a Basement with Dr. Ames Part 2 (audio)
Weather Instructions(audio)

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