Below Grade Insulation Board

Below grade insulation is important both for the longevity of your structures and for the earth.

Below grade insulation board.

Below grade foundation wall with foamular 250 for impact and puncture resistance to protect the waterproofing membrane during backfilling and insulate the foundation basement wall. With up to 50 percent of a building s total heat loss occurring at the perimeter and slab of the foundation below grade insulation is crucial to achieving energy efficiency. Because insulation installed on below grade building foundations and under concrete slabs is often exposed to moist soil it is crucial to choose an insulation that has minimal long term moisture retention and the ability to dry quickly. That portion of the rigid board which extends above grade should be mechanically attached and protected.

Around the slab edge or rim joist is an area that can account for 10 or more of your total heat loss. Two common rigid foam insulations specified for below grade applications are expanded polystyrene eps and extruded polystyrene xps. Insulating properly below grade can help prevent total structure heat loss and reduce heating and cooling bills by 10 20. Insulation on the exterior of below grade portions of the wall is temporarily held in place by adhesives until the backfill is placed.

Exterior insulated below grade insulation rockwool rigid stone wool insulation has been icc es validated to be used as a continuous exterior insulation on the exterior of a foundation wall. Two of the rigid foam insulations most commonly used below grade and under slabs are expanded polystyrene eps and extruded polystyrene xps. Lack of foundation insulation on below grade and under slab projects can account for up to 25 of a structure s total heat loss. Confirm long term thermal performance.

Get all the construction documentation you ll need in a single click. Wallguard insulates and protects areas from just below grade to where your heat lost begins around the exposed area of your building foundation. Below grade under slab system with foamular extruded polystyrene rigid board insulation and radiant heating. Perimeter below grade and underslab molded polystyrene insulation is a proven and effective method of conserving heat energy in cold climates and air conditioning energy in warm climates.