tommyt Posted October 21 Share Posted October 21 I have a fairly wide in places trench to fill in all around the house that was excavated for the foundation. Want to put a couple of French drains in the uphill side of the house as rainwater is collecting here. And I need to leave room for surface water pipes nearer the top. What material should I use to fill in with? There are a couple of areas, Front Door, Garage Entrance, Patio and Heat pump slab which also will need a solid footing under them. I have plenty of spoil saved from the excavations so can fill the further away from the house part of the trench with this. Was thinking a vertical geotextile membrane to seperate and build up in layers? Link to comment Share on other sites More sharing options...
joe90 Posted October 21 Share Posted October 21 My trench next to the foundations were filled with 50mm drainage stone to act as a French drain due to a high water table, this was extended to a roadside ditch to reduce the water levels. Link to comment Share on other sites More sharing options...
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