Best Insulation For Radiant Floor Heat

I am renovating an older house and am installing radiant heating on top of the existing slab on grade.

Best insulation for radiant floor heat. I put 3 inch fiberglas insulation between the joists and then stapled plastic to cover it. 0 2 inch 5mm closed cell polyethylene foam. Martin holladay explains insulating a slab on grade in the energy smart details department. I am planning to use 1 5 inches of foam board which gives me r 7 5.

Install prodex 48 inch fast action or 72 inch under floor joist. Also what should the density be of the insulation foam board be. The insulation phase is crucial for a radiant floor. Mainly heated slabs radiate outward rather than downward so insulation on the edges of the slab is most important.

Different insulation types help to minimize heat loss from convection air circulation conduction direct contact or radiation energy waves modes of. Tape seams with reflective tape or use prodex fast action or 10m to avoid seam tape. The climate the type of foundation whether the slab includes hydronic tubing for radiant heat and the severity of the local termite problem. Depending on joist spacing staple prodex 16 inch or 24 inch between joists at staple tab 4 to 6 below floor board.

Javascript seems to be disabled in your browser. Use radiant floor insulation. I have in floor heat. Insulating a slab on grade depends on at least four factors.

Is that going to be enough r value. Remember that your slab will be about 75 degrees f. This radiant heating insulation can be used under most flooring material. This insulation is placed below the hot water tubing or electric.

The house is about 3000. I want it to be as efficient as it can. Two installation methods are shown above. Prodex total 16 inch 24 inch 48 inch 10m and fast action is radiant floor insulation used under wood flooring to reflect radiant heat upwards back into the home prodex is a thermal break vapor barrier and radiant barrier.

When installing your in floor heating you may want to install a layer of radiant floor insulation. The tubes are in metal attached to the undersides of the subfloor. How to insulate under a wood floor with radiant heat. I was told the the fiberglass is absorbing the heat instead of reflecting it back up.

Need insulation for under concrete slabs slabs with radiant heat. Radiant heat insulation is installed to prevent heat loss from a pex radiant floor heating system most commonly pex embedded in concrete slab or stapled underneath the plywood subfloor. Radiant heat by its nature will want to radiate in all directions which is why it is important to use the right radiant floor heating products. Radiant floor insulation under wood floors.