If the basement walls are painted then waterproof paint is the best option as concrete and silicate based sealers cannot be used on painted surfaces.
Paint for concrete walls in basement to keep out moisture.
Designed to form an impermeable barrier to water on interior and exterior vertical or horizontal concrete block and cast in place concrete.
Kilz basement masonry waterproofer forms a barrier to keep water out and dampness down in basements and other areas that are susceptible to wet conditions.
Acrylic paint acts very similar to regular interior paint only it goes on thicker.
These moisture barrier paints are not guaranteed if the concrete is crumbling or badly cracked but can be applied over repairs or under carpet and paneling to help keep your basement dry.
In fact one gallon of acrylic paint typically covers about one fourth that of ordinary paint.
Painting your concrete basement walls not only helps protect your basement against mold water bacteria and mildew but also adds to the look of your basement especially if you use it as a work or rec room.
One gallon can cover up to 125 feet.
An alkali resistant coating gives it a durable finish.
Low voc mold and mildew proof white water based waterproofing paint is a modified acrylic copolymer concrete and masonry waterproofing paint and finish.
Paint the interior walls of concrete block basements to protect against moisture.
A tinted base allows for a decorative finish of your choice.