ᐅ Insulating the basement floor

Created on: 28 Mar 2011 10:33
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Dear community,
We recently purchased a terraced house with a basement located above an open underground garage. The concrete ceiling between the garage and basement is about 30 cm (12 inches) thick and quite cold during winter. We now want to convert the basement into an office. Therefore, we would like to insulate the floor, install underfloor heating, and cover it with a linoleum floor. Unfortunately, we can only allow a maximum of 6 cm (2.4 inches) floor height increase.

We are considering installing underfloor heating that already includes a thin insulation layer. My question is: How should I build up the entire floor structure? Where should a vapor barrier or vapor retarder be installed? Does anyone have experience with this? Widder says that the supplied PE foil should be placed above the heating system...

Thank you very much for your answers.
Best regards,
Patrick
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Robert-1
11 Oct 2015 11:29
I also find it hard to believe that this Sika coating plus build-up would be around 6cm (2.4 inches). I haven’t heard of that from any heating engineer either.
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Richard-1
25 Dec 2015 10:29
Simply add thermal insulation here and then install radiators. Use the conventional heating system for this. This makes more sense than underfloor heating, especially when only the basement is being heated.