Rigid Insulation Below Slab On Grade

Although both are closed cell insulations they perform very differently over the long term.

Rigid insulation below slab on grade.

Set your store to see local availability add to cart. For example installing a below grade insulation rated for 100 psi when only 40 psi is needed will nearly double the material cost. Products in this solution. Below grade under slab system with foamular rigid board insulation.

An easy way to recognize eps on the jobsite is that it is commonly white. The codes are silent about whether above grade slabs need to be insulated. Two common rigid foam insulations specified for below grade applications are expanded polystyrene eps and extruded polystyrene xps. Below grade under slab system with foamular extruded polystyrene rigid board insulation and radiant heating.

Slab on grade floors with a floor surface less than 12 inches below grade should be insulated in accordance with information provided in the insulation and fenestration requirements by component table which is reproduced following this paragraph. Below grade need vertical insulation at the slab perimeter. View product details. Otherwise both codes require that slab on grade floors with a floor surface less than 12 in.

It also discusses installation procedures for below grade and under slab insulation. These codes do not require any insulation for slabs that are more than 12 in. Slab is one foot or less below grade r 10 insulation required extending 2 feet below grade for climate zones 4 and 5 4 feet below grade for climate zone 6 insulation should extend downward from the top of the slab with two options to reduce slab edge insulation r value exterior slab insulation must be protected 46. 2015 iecc irc section r402 2 10 n1102 2 10 slab on grade floors.

Many designers mistakenly assume that loads placed on slabs transfer through to the underlying insulation and soil at a 45 degree angle instead of a more. Specify this solution zip 4 3 mb. Owens corning enclosure solutions. Water resistant rigid board for under concrete slab insulation and slab support in traffic bearing applications.

Get free shipping on qualified under slab foam board insulation or buy online pick up in store today in the building materials department. Confirm with your engineer what strength is needed.