Insulation Under Concrete Slab

Unitherm is made from unipoly a light weight moulded polystyrene material with exceptional thermal insulation properties.

Insulation under concrete slab.

Slabs that include embedded hydronic tubing for radiant heat always need a continuous layer of horizontal insulation under the entire slab. Eps 3 xps 2 faced or unfaced. Ecofoil under slab insulation is superior to traditional outdated forms of concrete floor insulation such as polystyrene or foam sheets. Faced 2 unfaced 3 insulation features.

The f factors for slab on grade floors are defined in standard 90 1. The foil within the product acts to spread out the heat signature of the heating coils. Under slab 5 more ways to filter. Rigid insulation concrete products like foam sheeting are easily broken and must be used with an extra vapor barrier plus standard foam or polystyrene concrete insulation does not stop radiant heat loss or gain.

Step 1 excavate the area under the slab to 12 inches below the planned level of the top of the slab. Additional insulation is applied along the edges of the slab because that is a primary surface for heat loss. 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. Cement 3 concrete 4 existing drywall 2 plywood 5 wood 3 sheathing type.

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. 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. The reflectix concrete slab insulation is an innovative easy to handle product that increases the energy efficiency of radiant floor and snow melt systems under concrete. 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.

Get free shipping on qualified under slab foam board insulation or buy online pick up in store today in the building materials department. Adding insulation under the concrete floor requires the same skill set and equipment as forming and pouring the concrete slab. Walls foundations roof and roof decks air distribution ceilings interior solutions mechanical pipe.