What are some methods of insulating floors?

Methods of insulating floors include using rigid foam, rolls and batts, and reflective systems made of aluminum foils. The type of insulation selected depends on the size of insulation needed, the accessibility of the area being insulted and the cost and availability of the insulation materials.

Rigid foam, which is made of polyurethane or polystyrene, provides high insulating value to both floors and ceilings. Rolls and batts are made of natural fibers, mineral wool and fiberglass, and they fit well in the spaces between joists and studs. Reflective systems insulate the floors by reducing downward heat loss. Bubble form reflective systems are flexible and can fit in irregular areas.