4.0401 Rim/Band Joist 4.0401.1 SPF Insulation 4.0401.2 Batt Insulation 4.0401.3 Rigid Insulation 4.0402 Walls 4.0402.1 Closed Crawlspace - Non-Foam Insulation 4.0402.2 Closed Crawlspace - Rigid Foam Insulation 4.0402.3 Closed Crawlspace - SPF Insulation 4.0402.4 Basements - Without Groundwater Leakage 4.0402.5 Basements - With Groundwater Leakage 4.0403 Slabs 4.0403.1 Raised and On-Grade Slab Edge Insulation