How to Waterproof Your Basement With Sani-Tred

Step by Step Basement Waterproofing:

The following steps on interior basement waterproofing will show you How to Waterproof a Basement with SANI-TRED®.

Products needed for waterproofing basement walls from inside: PermaFlex®, LRB (Liquid Rubber Base) and TAV (Thickening Activator)

Step 1 Prepare

The first step on how to waterproof concrete walls is “prepare” the substrate (surface). Make sure it is clean, dry, free of any previous applied products, foreign matter and loose or crumbling material.


Step 2 Prime

“Prime” the substrate (surface): This is the last step on how to waterproof basement walls from interior. Apply 1 coat of PermaFlex® (240 sq ft per gal). Concrete block surfaces need 2 prime coats of PermaFlex® basement waterproofing products because it is more porous than standard poured concrete. The first coat of PermaFlex® penetrates deep to permanently lock and seal within the pores of the basement concrete for waterproofing. The second coat begins filling the pores, pock holes & pin holes near the surface. PermaFlex® basement waterproofing products permanently adheres to concrete.

Step 3 Patch

3. “Patch” and profile any joints, seams, cracks, holes and rough areas using LRB/TAV mixture. 2-parts LRB (Liquid Rubber Base) is mixed with 1-part TAV (Thickening Activator) to create a thick caulk-like mixture. A 1″ diameter caulk bead of LRB/TAV mixture is applied where the wall meets the floor. Most cracks use a 3/4″ diameter caulk bead. LRB/TAV “Round Caulk Bead Chart


Step 4 Topcoat

“Topcoat”: Apply 1 coat of PermaFlex® (240 sq ft per gal).


sanitred-order-now1 copy

Shopping Cart

Questions? Call Our Experts