ᐅ Rooms cold on the floor – is insulating the basement ceiling a good idea?

Created on: 24 Nov 2021 13:54
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Nanopixel
Our living room (ground floor) feels extremely cold underfoot. Even after heating for hours (standard radiator), your feet still feel cold—the floor temperature measured with an infrared thermometer is between 17 and 18°C (63 and 64°F).
The basement room below has a temperature of about 13°C (55°F), and the basement ceiling is bare concrete.
My question is: Would insulating the basement ceiling help? If so, what materials would you recommend?
Regards,
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Nanopixel
29 Nov 2021 11:32
Where can you get these aluminum-coated PUR panels? They can’t be found at the DIY stores around here...
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Benutzer200
29 Nov 2021 11:47
Nanopixel schrieb:

Where can you get these aluminum-faced PUR boards? They can’t be found at the local DIY stores around here...
From specialist suppliers. Or also from well-known insulation material retailers like Dämmstoffkönig or smartbau.
Tolentino29 Nov 2021 11:48
Aluminum foil facing is not necessary. Mineral wool insulation also works.
Aluminum foil facing is not really needed even under underfloor heating.
Look for PUR or PIR insulation boards, for example from Bauder.

Dämmstoffkönig was out of stock when I asked last summer, but maybe they have it again now. Otherwise, searching for PUR boards should be quite helpful.
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Benutzer200
29 Nov 2021 12:16
Tolentino schrieb:

Dämmstoffkönig was out of stock when I asked in summer, maybe available again now.

They all still have some issues with availability. And the prices have also increased significantly.
Tolentino29 Nov 2021 12:22
Yes, it's a pity that the original poster is building in Hesse. I still have some slabs left. Although it probably wouldn’t be enough for an entire basement ceiling...
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Nanopixel
29 Nov 2021 13:13
Insulation king? Smartbau? None of that means anything to me.
What do you think about XPS rigid foam boards? You can find something like that at the hardware store.