It typically extends up from the ground a few feet and provides support for the structure above it.Ī stem wall concrete slab foundation is often used in areas with expansive soils because it helps to anchor the structure to the ground and prevent it from moving due to soil movement. The stem wall is a vertical wall of concrete that is poured around the perimeter of the foundation. Less energy efficient since they do not provide any insulation between the ground and the floor of the structureĪ stem wall concrete slab combines a concrete stem wall with a slab-on-grade foundation.May require additional waterproofing measures such as a sump pump or exterior drainage system.Less suitable for areas with expansive soils due to soil swelling and shrinking.Durable, with properly poured and finished slabs lasting decades or longer.
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