Interior Basement Walls

Application Instructions


Be sure surfaces are clean and dry before the coating application. Do not use any soaps, or detergents. Remove all loose paint, tar, dirt, oil, and grease leaving surface clean and completely dry. In certain situations a shot-blaster may be needed to help clean and roughen the surface. 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 before proceeding. All cracks, joints less than 5/8” and seams should be filled using Blue Max Caulk or Blue Max Trowel Grade filler. For larger cracks (5/8″ or larger) fill with a cementitious filler. Make sure surface is as smooth as possible. For best results and adhesion, it is ideal to apply coating over a bare surface void of paint or residue of any kind. Product comes ready to use, no mixing or stirring required. For newly poured concrete, you must allow at least 30 days for complete dry and cure time before applying product.


Ames® Blue Max® or Ames®  Block & Wall® Liquid Rubber can be applied with a paint brush, a low nap roller or a commercial/industrial airless sprayer. In addition, you may need Ames® Peel & Stick™ Seam Tape and scissors, a utility knife and a standard paint tray. Call toll free at 1-888-345-0809 with questions or for specific sprayer specifications.

Click Here for Sprayer Specifications


Step 1: After following the instructions for preparation of the surface, no primer is needed.  All cracks, joints less than 5/8” and seams should be filled using Blue Max Caulk or Blue Max Trowel Grade filler. For larger cracks (5/8″ or larger) fill with a cementitious filler. Make sure surface is as smooth as possible.

Step 2: Surfaces with joints, cracks, or where two unlike surfaces come together, require Ames® Peel & Stick™ Self Adhesive Seam Tape 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® and allow to completely dry prior to setting the Seam Tape in place.

Step 3: Apply a liberal coat of Ames® Blue Max® or Block & Wall® Liquid Rubber over the Seam Tape and the wall and allow to completely dry. Once dry, apply a second coat of the product and allow to completely dry.

Estimated Coverage:

Standard product coverage on a smooth surface is 100 sq. ft. per gallon per coat. A minimum of two coats is recommended. (2 gallons per 100 sq. ft.) The application must be applied in a continuous, unbroken seal of a minimum dry thickness of no less than 30 mils (the thickness of a dime). More coats equal longer life. Rough or uneven surfaces will require additional product and drying time.

Weather & Drying Guidelines:

Both Ames® Blue Max® and Block & Wall® Liquid Rubber are best applied between 50° to 90° F (10° to 32° C) on warm dry surfaces. Starts to dry in 30 minutes to 2 hours, depending on thickness of application and weather. It can continue to cure for up to 2 weeks. Ames® Blue Max® goes on a light blue color and dries to a darker blue. Make sure Ames® Blue Max® is completely dark blue before proceeding with next coat. A slight tack is normal for Blue Max® after drying. Ames® Blue Max® may be recoated or top coated when it is dry to the touch. Low temperatures, high humidity, rough or uneven surfaces will require increased drying/curing time.

Clean-up, Storage, and Disposal:

Clean tools and small spills with water. Do not use soaps or detergents. Store unused product in its original container, tightly sealed and protect from freezing. Dispose of this product in accordance with local, state, or federal requirements.

Can be used in Conjunction with:  Ames® Blue Max® Trowel-Grade, and also works well as a primer and waterproofing membrane for Ames® Paint & Prime®, Ames® Block & Wall® Acrylic, and Ames® Maximum Stretch®.

ames waterproof interior basement

Products for Interior Basement Walls

Ames Blue Max Liquid Rubber Waterproof Sealant

Blue Max®

Ames® Blue Max® is a special blend of adhesive, high strength elastomeric liquid rubber. It is a new, impenetrable, rubber technology for waterproofing in extreme wet situations such as below grade foundations, basement walls and a base coat for certain roof types.

Ames Block Wall Liquid Rubber Sealant

Block & Wall® Liquid Rubber

Ames® Block & Wall® Liquid Rubber is a blend of adhesive, high strength, elastomeric, liquid rubber. It is designed for waterproofing in extreme situations.

Peel & Stick™ Seam Tape

Ames® Peel & Stick™ Seam Tape is a self-adhesive, contouring seam tape for reinforcement over seams and cracks and around vents. Easy to apply.