Rigid Foam Insulation Concrete Slab

A careful evaluation of these materials performance attributes against the project s needs can dramatically shrink labor and material costs.

Rigid foam insulation concrete slab.

Concrete 4 existing drywall 2 plywood 5 wood 3 sheathing type. 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. A heated slab is a type of construction that has a slab on grade concrete floor with a heating system embedded in or beneath the slab floor. Get free shipping on qualified under slab foam board insulation or buy online pick up in store today in the building materials department.

Additional insulation is applied along the edges of the slab because that is a primary surface for heat loss. Rigid insulation is one of the best tools to reduce your energy costs. Building additions that include a slab on grade construction also are subject to the slab edge requirements listed in the iecc irc. If your basement slab lacks sub slab foam you ll have to install the insulation above the slab.

Install it anywhere from the roof to the foundation. You can attach wood sleepers to the floor fill the gaps with rigid foam insulation and then apply your finish flooring. Rigid foam insulation also known as insulating boards provide high r values. Or as demonstrated here you can cover the slab with rigid foam insulation add two layers of plywood and then add the finish flooring.

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. There are several ways to install subflooring above the rigid foam. 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. There are two ways to handle insulating concrete floors.

Exterior rigid foam insulation at the edge of 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. R 7 7 rigid foam insulation model 310891 18 35 18 35. They keep your home at a comfortable temperature without the need to crank your heat.

Eps 3 xps 2 faced or unfaced. The usual solution is to bevel the top of the foam so that concrete will then cover the bevel. You can use either one or two layers of plywood or osb and the subflooring can either be fastened to the concrete with long tapcon screws or it can simply float above the foam. You can even place it under the foundation slab.