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Filler? I've seen foam inside/outside the concrete for insulation, but as a filler...as in replacing aggregate in the concrete?
by NoImmatureAdHom 5y ago
Filler? I've seen foam inside/outside the concrete for insulation, but as a filler...as in replacing aggregate in the concrete?
- jacquesm 5y agoYou can do that too to reduce the density of the concrete and to increase the insulation value but what you're more likely to encounter is to have the foundation layered in foam slabs and then concrete poured over the top for a good mixture of strength and insulation. The styrofoam insulates and because the concrete and the foam are in contact it also helps to diffuse loads. Some pictures: https://fpmccann.co.uk/portfolio-items/thermabeam/ https://fpmccann.co.uk/portfolio-items/thermabeam/ Insulated foundations set on foam: https://www.greenbuildingadvisor.com/article/placing-a-concrete-foundation-on-rigid-foam-insulation https://www.greenbuildingadvisor.com/article/placing-a-concr... The main reason is to fully insulate the thermal mass of the house from the surroundings. I see this happen around here all the time and even though I understand the basics I'm still not sure that I would like the house that I own and have a good chunk of my saving in built like that because of the long term compression of the foam. I'd be worry about uneven compression and cracks or other foundation issues. But it's really very common.