After your waterproofing has dried, install 2-in. extruded polystyrene (XPS) foam board insulation. Be sure you use XPS—other types of foam board are not as moisture resistant. Stick the foam ...

Each one is more sustainable than traditional foam boards made of XPS. If you're looking for green project upgrades you can do to keep your home sustainable, installing one of these insulation ...

Starting with two pink sheets of XPS ... foam into roughly the right shape with a hot wire. Clean up is done with sanding blocks, a plane, and a level. The next step is laminating the board ...