Insulation Under Concrete Slab On Ground

Horizontal insulation placed less than 12 inches below the ground surface or that portion of horizontal insulation extending outward more than 24 inches from the foundation edge should be protected against damage by use of a concrete slab or asphalt paving on the ground surface directly above the insulation or by cementitious board plywood.

Insulation under concrete slab on ground.

Faced 2 unfaced 3 insulation features. Under slab 5 more ways to filter. Get free shipping on qualified under slab foam board insulation or buy online pick up in store today in the building materials department. Cement 3 concrete 4 existing drywall 2 plywood 5 wood 3 sheathing type.

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. Our businesses in australia. If the insulation is going below the slab the damp proof membrane dpm is laid next followed by the insulation a polythene separating layer and the concrete slab. Under slab insulation up site admin 2020 07 16t01 50 20 00 00 a durable and energy efficient solution for insulation applications and the ideal material to stop energy loss at the foundation slab.

Slabmate is the new under slab insulation solution for slab on ground construction slabmate has been designed to create a thermal barrier adding to the total insulation of the project. Adding insulation under the concrete floor requires the same skill set and equipment as forming and pouring the concrete slab. 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 careful evaluation of these materials performance attributes against the project s needs can dramatically shrink labor and material costs.

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. Slabs that include embedded hydronic tubing for radiant heat always need a continuous layer of horizontal insulation under the entire slab. Step 1 excavate the area under the slab to 12 inches below the planned level of the top of the slab. Eps 3 xps 2 faced or unfaced.

Depending on the use of the building the slab can then be finished ready for use or receive a screed suitable for a floor finish. Additional insulation is applied along the edges of the slab because that is a primary surface for heat loss. Environmentally friendly slabmate is made here in australia for both commercial and residential projects slabmate is lightweight safe and easy to install and will maintain its r value for the life the building.