Foam Board Insulation Under Concrete Slab

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Foam board insulation under concrete slab. Get free shipping on qualified under slab foam board insulation or buy online pick up in store today in the building. Concrete 3 existing drywall 2 plywood 3 wood 2 sheathing type. Additional insulation is applied along the edges of the slab because that is a primary surface for heat loss. Foamular foamular 250 3 in.
R 15 scored squared edge rigid foam board insulation sheathing model 9gb view the owens corning. For installation on concrete foundations and under floor slabs the rigid foam insulation you choose can make a difference of tens of thousands of dollars on a project. For foam plastic insulation extrusion matters xps performs better than eps pdf. Lack of foundation insulation on below grade and under slab projects can account for up to 25 of a structure s total heat loss.
Water resistant rigid board for under concrete slab insulation and slab support in traffic bearing applications. Insulating properly below grade can help prevent total structure heat loss and reduce heating and cooling bills by 10 20. Eps 3 xps 2 faced or. Below grade under slab with foamular xps insulation.
This article discusses the use of polyisocyanurate foam board insulation below concrete slabs. For under slab applications the rigid foam insulation typically should be installed over a gravel base with a poly vapor diffusion retarder between the gravel and insulation. Concrete 4 existing drywall 2 plywood 5 wood 3 sheathing type. Shop eps insulation shop polyiso insulation shop xps insulation.
A careful evaluation of these materials performance attributes against the project s needs can dramatically shrink labor and material costs. Depending on your location you may need rigid foam insulation under and around the edges of the slab by martin holladay issue 245 aug sept 2014 while walls and roofs have long been a point of focus foundations seem to be the final frontier when it comes to insulation.