Insulating Concrete Slab On Grade

Slab is one foot or less below grade r 10 insulation required extending 2 feet below grade for climate zones 4 and 5 4 feet below grade for climate zone 6 insulation should extend downward from the top of the slab with two options to reduce slab edge insulation r value.

Insulating concrete slab on grade.

Martin holladay explains insulating a slab on grade in the energy smart details department. One arrangement may be more conducive to maintaining a continuous thermal barrier from a wall down through its foundation but it allows unsightly exposure along the. By replacing concrete with lower impact and better performing building materials like. A slab on grade is defined as any concrete slab poured over excavated soil.

From a radiant heating perspective it doesn t matter if the slab is actually at grade or is poured several feet below grade as part of a full foundation. The climate the type of foundation whether the slab includes hydronic tubing for radiant heat and the severity of the local termite problem. It seems like it should not be so complicated.