![]() Contractors pour footings two feet into the ground with a layer of sand, gravel, or rock for drainage purposes. SlabĪ typical slab foundation contains a six-inch thick layer of poured concrete and footings (concrete columns) to anchor the foundation. Let’s examine the differences between slab and crawl space foundations. But then builders began pouring concrete slabs as another foundation alternative when they learned slabs decreased winter heating bills by 10% to 20%. What’s the Difference Between Crawl Spaces and Slab Foundations?īefore the 1970s, builders constructed homes with basements or crawl space foundations to protect the first floor from the ground. What’s the Difference Between Crawl Space and Slab Foundations?.Read our comparison guide to learn the differences between slab and crawl space foundations to decide the best choice for your home. Slabs provide more durability, while crawl spaces hold up better in earthquake- and flood-prone areas. Crawl spaces work better on sloped properties but cost more. Slabs resist moisture but crack more easily when soil shifts. ![]() ![]() Slabs and crawl spaces can both make excellent choices for home foundations, depending on your needs. ![]()
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