Building It Right

A foundation is forever, so it makes sense to pay attention to the details that ensure it will remain dry and crack-free for as long as it has a house to hold up. When Tom Silva is building a house, he wants foundation walls that are plumb and level and free of the discolorations that are the signs of weak concrete. The illustration shows how he wants a foundation to look before he starts framing.
25th Foundations
Photo: Bernd Auers

The requirements for a slab foundation are similar: a sturdy footing and a vapor-proofed, reinforced-concrete pad sitting on a bed of compactedcrushed stone. The major difference is in the way the slab is insulated to protect against frost heaves. For a look at a slab foundation, click here.

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