Insulated Basement Floor Slab

Insulation requirements for slab on grade floors can be found in section r402 2 9 of the 2012 iecc and section n1102 2 9 of the 2012 irc.

Insulated basement floor slab.

Both extruded or expanded polystyrene have been widely used with success. The floor never feels cold even even it s 30 outside. Both extruded or expanded polystyrene have been widely used with success. My basement slab is insulated with two inches of foam and it s actually pretty great.

Insulating a concrete floor can save you money on your heating bill making an attached garage or basement warmer and by extension the rest of your house. Both codes state slab edge insulation is not required in jurisdictions designated by the building official as having a very heavy termite infestation. The basement walls and floors of older homes are generally uninsulated. Basement floor slabs are best insulated underneath with rigid insulation.

Although the energy savings of sub slab insulation are not as significant as basement wall insulation such insulations do offer a significant improvement in comfort and moisture damage. In these homes the basement accounts for one third of the home s heat loss. Creating an insulation layer and a vapor barrier between the concrete slab and the ground beneath it is the best practice in insulating basement floors. Basement floor slabs are best insulated underneath with rigid insulation.

Although the energy savings of sub slab insulation are not as significant as basement wall insulation such insulations do offer a significant improvement in comfort and moisture damage resistance. Adequate basement floor insulation can reduce this heat loss improving comfort conserving energy. The insulation barrier will help keep warm air in and the vapor barrier will keep unwanted moisture out. In addition to offering insulation and energy savings the plywood subfloor described here can provide the perfect foundation for finish flooring such as carpeting adding warmth in look as.