Insulation Rigid 4" 2X8 Type 4 R20 XPS S/L

Boost energy efficiency with rigid insulation that's easy to work with. This board adds continuous R-value and moisture resistance to walls, floors and foundations.

Key Features

• Rigid board with R-value as specified
• Moisture resistant
• Lightweight and easy to cut

Common Applications

• Foundations, basements and under slabs
• Exterior continuous insulation

Related Products & Sizes

• Also available in: 1.5" 2X8 3 R7.5; 2" 2x8 3 R10; 2.5" 2x8 3 R12; 3" 2X8 3 R15
• Foam-compatible adhesive and tape
• Cap nails and fasteners

Installation & Use Notes

• Use foam-compatible adhesives
• Protect from UV and seal seams with tape