Spray Foam Under Slab On Grade

Two of the rigid foam insulations most commonly used below grade and under slabs are expanded polystyrene eps and extruded polystyrene xps.

Spray foam under slab on grade.

The first step is to drill holes in the problem concrete. Confirm long term thermal performance. The best way to insulate under a slab on grade concrete foundation is with eps rigid foam insulation. Holes should be no less than six inches away from the edge of the concrete.

Owens corning enclosure solutions. And yes it is a foam just like your beloved spray foam. An easy way to recognize eps on the jobsite is that it is commonly white. See our step by step slab on grade construction videos in the ecohome green home building guide pages.

It also discusses installation procedures for below grade and under slab insulation. Two common rigid foam insulations specified for below grade applications are expanded polystyrene eps and extruded polystyrene xps. Although both are closed cell insulations they perform very differently over the long term. Geolift works in three steps.

Insulating under foundation and basement slabs using spf spray polyurethane foam offers certain advantages over the more common method of using rigid foam board. Water resistant rigid board for under concrete slab insulation and slab support in traffic bearing applications.