What Types of Closed-Cell Rigid Insulation Are Waterproof?

Polyiso, XPS, and EPS closed-cell rigid foam board insulation offers efficient, water-resistant home insulation. It can serve as a vapor barrier in above- and below-grade home construction and remodeling applications.

Froth-Pak Low GWP 200 Spray Gun Indoor/Outdoor Spray Foam Insulation in the Spray Foam Insulation department at

How to Recycle Styrofoam in California

Building Materials & Supplies

Owens Corning FOAMULAR 150 2 in. x 4 ft. x 8 ft. R-10 Scored Squared Edge Rigid Foam Board Insulation Sheathing 45W - The Home Depot

Subfloor Insulation: Which Is Best? – Texas Insulation

Polyurethane vs. Polystyrene Insulation

Insulation R-Values Chart and Buyer Guide

A Comparison of Mechanical Insulation Materials

Open vs. Closed Cell Foam: Understanding Permeability

Neoprene High Quality Foam Sheets

What Is the Difference Between Pink and Blue Foam Board?