Waterproofing Options
The primary methods of waterproofing are: peel and stick membranes, liquid systems that are sprayed, rolled, or applied with a trowel, and dimpled drainage mats which are fastened to the ICF walls.
Self-adhesive waterproof membranes such as Tamko TW-60 are placed vertically and overlapped to prevent water from intrusion.
Air Gap Membranes such as DMX-AG are a dimple board placed with dimples against ICF to allow water to rise bottom to top displacing air and reducing hydrostatic pressure against the wall.
AG membranes also offer some limited protection of underlying ICF and waterproof membranes when backfilling.
Spray-on membranes for ICF are beginning to grow as well but currently depend on the regional skills and availability of applicators.
Newer methods are designed to save labor and material costs.
