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MBC insulated raft foundation. What did you back fill the trench around the insulated slab with?


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HI. We have an MBC insulated raft foundation. We are on heavy clay and the house is on a slight slope. We need to landscape when the weather is better but we need to back fill the trench around the house. What did everyone else use? Architect is saying shingle! but this isn't stable. 'Normal' houses wouldn't have this and they would be surrounded by the earth that surrounds the foundation so do we put that back in? Its quite claggy and lumpy though. We were thinking type 1 with some French drains. Any advice welcome. W did out own groundworks so I have no one to ask. Thanks for any help.



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