Getting Slab-Edge Insulation Right - GreenBuildingAdvisor
Jul 29, 2020 · Slab-on-grade perimeter insulation, or slab-edge insulation, is one of the most commonly abused construction details. When installed properly, this insulation offers significant improvements …
Energy Edge Slab Insulation System - GreenBuildingAdvisor
Energy edge is a PVC form with integral 2 in. expanded polystyrene (EPS) foam board (R-8). It forms and insulates the slab while protecting the insulation. The PVC is recycled from post-industrial waste …
Different Types of Insulated Slabs - GreenBuildingAdvisor
Aug 6, 2021 · An insulated raft slab resembles a frost-protected shallow foundation, with two main differences: an insulated raft slab usually has a uniform thickness rather than a thickened edge, and …
Understanding the Energy Code: Slab Insulation Requirements
Nov 14, 2025 · I see a common theme in many of the questions: confusion about slab insulation. Builders often struggle with slab-edge details, especially in cold climates, because they are difficult to …
Insulation Retrofit for an Existing Concrete Slab and 2x4 Walls ...
Feb 24, 2021 · That’s what we were facing on this recent project. The existing structure had 2×4 walls 16 in. o.c. and a turn-down concrete slab foundation. We stripped the building down to the studs by …
Stem wall ledge for slab support - GreenBuildingAdvisor
Jul 10, 2014 · I'm leaning towards doing a slab on grade foundation with a stem wall for a new house, and have been thinking about slab edge insulation details. The most common approach seems to be …
Slab edge insulation, possible foam board over osb walls ...
Dec 2, 2025 · Ive decided that i want to install slab edge insulation by using 2 inch xps. Ive been considering installing 1inch xps (or whatever else would work), over the osb and taping all of the …
Slab Edge Insulation and Termite Control - GreenBuildingAdvisor
Nov 9, 2023 · Stem Wall & Slab Edge Insulation in Slab on Grade – Zone 4B with Termites Hello all. We’re building a slab-on-grade, wood/stucco home near Sedona in zone 4B. It’s currently designed …
Heated Slab-on-Grade Not Passing RES-check with R10 slab insulation
Jun 21, 2023 · The slab edge insulation for heated slabs shall not be required to extend below the slab.” The requirement for a heated slab is R-10+R-5. With R-15, the project passes. #### END ##### But …
Details for Insulating a Slab Perimeter - GreenBuildingAdvisor
Jan 27, 2020 · In this insulation detail at the perimeter of the slab a total of 6 inches of rigid foam insulation separates the interior slab from the outdoors. A plywood bottom plate helps to stabilize the …