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Yes, placing cushion sand under concrete slabs is often necessary as it provides a stable base, helps with drainage, and reduces the risk of cracking. The sand layer can also accommodate minor ground movements and prevent moisture from affecting the concrete. However, the need for cushion sand depends on the specific site conditions and the design of the slab. Always consult local building codes and a structural engineer for the best practices in your area.

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∙ 1y ago

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What do you put between slabs after laying them?

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www.srimaging.com


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marble and concrete slabs.


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