Proper foundation drainage is crucial for keeping water away from a home's foundation. The minimum drainage is a perimeter footing drain, but drainage boards and additional drain pipe can help., Sheet Drain captures and removes subsurface water, reducing hydrostatic pressure to help prevent saturation of surfaces and costly property damage; Use Sheet Drain vertically or horizontally on foundation walls, retaining walls, and raised planters along with a drainage system to convey water, InsulFoam DB Drainage Board is a high-peformance, rigid insulation consisting of a superior closed-cell, lightweight and resilient expanded polystyrene (EPS). The core of Insulfoam DB has 1⁄4” x 1⁄4” drainage channels every 2” O.C. and is the same high-quality as our Insulfoam brand insulations., Protect structures from water damage with MEL-DRAIN, a high-performance drainage board for waterproofing and moisture protection. Designed for basements, retaining walls, plaza decks, and site drainage, it ensures high-flow capacity, durability, and easy installation., Warm-N-Dri® foundation board keeps basements comfortable by reducing condensation and protecting against freeze/thaw damage. Compatible with TUFF-N-DRI®., Precision-cut channels drain water from vertical foundation walls while completing the total insulation envelope. R means the resistance to heat flow; the higher the R-value, the greater the insulating power. See actual warranty for complete details, limitations, and requirements..