Rigid Insulation Over Concrete Slab

If the top of the vertical rigid foam installed at the slab perimeter is visible on the interior of the house it can be hard to install flooring.
Rigid insulation over concrete slab. Insulating over a structural slab thinking outside the slab. Are you only insulating the top few feet of the wall or are you insulating the entire wall from the slab up to the. Concrete 4 existing drywall 2 plywood 5 wood 3 sheathing type. Are you using open cell spray foam or closed cell spray foam.
Where insulation is positioned above the slab the slab and dpm can be installed either way round. A careful evaluation of these materials performance attributes against the project s needs can dramatically shrink labor and material costs. 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. Get free shipping on qualified under slab foam board insulation or buy online pick up in store today in the building materials department.
With the slab on grade for this home we started with a typical frost wall foundation. Frost wall and prep. The usual solution is to bevel the top of the foam so that concrete will then cover the bevel. One solution would have been installing rigid insulation under the slab turning it up on the.
Up to one quarter of a building s energy loss is due to lack of insulation in below grade areas including the foundation and under slabs. 4 10 2012 3 climate zones e301 1 6 5 8 4 slab r value table 402 1 1 insulation and fenestration requirements by component e402 1 1 climatezone slab r valued 4 10 2 ft 5 10 2 ft 6 10 4 ft 9. R 7 7 rigid foam insulation model 310891 18 35 18 35. Insulation for concrete slab floors if the insulation is going below the slab the damp proof membrane dpm is laid next followed by the insulation a.