Rigid Insulation Under Slab

Below grade under slab system with foamular rigid board insulation.
Rigid insulation under slab. One of the best ways to save money on rigid foam insulation installed under concrete slabs is to ensure the material is not over engineered. You can even place it under the foundation slab. 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. Below grade under slab system with foamular extruded polystyrene rigid board insulation and radiant heating.
Slabs that include embedded hydronic tubing for radiant heat always need a continuous layer of horizontal insulation under the entire slab. 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. Insulation located below grade as required in climate zones 4 through 8 should extend the length specified in the table by any combination of vertical insulation insulation extending under the slab or insulation extending out perpendicular to the building insulation extending perpendicular away from the building should be protected by. Products in this solution.
They keep your home at a comfortable temperature without the need to crank your heat. Additional insulation is applied along the edges of the slab because that is a primary surface for heat loss. View product details. Set your store to see local availability add to cart.
Get all the construction documentation you ll need in a single click. Rigid insulation is one of the best tools to reduce your energy costs. Install it anywhere from the roof to the foundation. A common design assumption leads to specification of rigid foam strengths that are many orders of magnitude higher than necessary which can double the insulation material cost.
Specify this solution zip 4 3 mb. Owens corning enclosure solutions. Eps offers a number of advantages over the more commonly installed xps including having the highest r value per dollar among rigid insulations. If your slab is heated it s a good idea to increase the r value of the vertical and the horizontal insulation to at least r 20.
R 7 7 rigid foam insulation model 310891 18 35 18 35. Rigid foam insulation also known as insulating boards provide high r values.