ᐅ What does DÄM20 mean?

Created on: 13 Oct 2011 07:42
R
RB79
R
RB79
13 Oct 2011 07:42
Hello everyone,
in the energy saving certificate for our Kfw70 house, it states that our attic has an "18cm (7 inch) concrete intermediate ceiling Ins20."

What does Ins20 mean??? What type of insulation needs to be installed here?

Best regards

RB
€uro
13 Oct 2011 08:31
Hello,
RB79 schrieb:
...What does Däm20 mean??? What type of insulation needs to be applied here?

The person who created the report should be able to provide clarification. It is common for the report to also include the complete layer structure. If necessary, check the heating load calculation, as this component must also be listed there.

Best regards
R
RB79
13 Oct 2011 08:58
Hi,

The "manufacturer" refuses to provide us with any information. Therefore, I have to take care of this work myself.

I thought there were certain products or specifications for this, similar to insulation wool.

Otherwise, I would have used 10cm (4 inches) polystyrene boards...
€uro
13 Oct 2011 09:43
Hello,
RB79 schrieb:
...The "manufacturer" refuses to provide us with any information. That’s why I have to take care of these tasks.
I didn’t mean the manufacturer but the creator of the verification report. The layer structure must be precisely defined there! What does the heating load calculation say? Something doesn’t add up!

Best regards
E
E.Curb
13 Oct 2011 11:57
Hello,

if by manufacturer you mean your home builder, then I would stay away from them. Otherwise, why would they be so stingy with information?

Regards
R
RB79
13 Oct 2011 13:58
I got it:

18cm (7 inches) concrete intermediate floor, Insulation 20 74.66 m² U-value = 0.115 W/m²K
Material -- Density -- Thickness -- λ (thermal conductivity) -- R (thermal resistance) -- Vapor diffusion resistance
Air transfer on warm side RSi 0.10
[LEFT]
1 Cement screed --> 2000.0 --> 30.00 mm (1.18 inches) --> 1.400 0.021 15 / 35
2 Vapor barrier PE foil --> 1100.0 --> 0.30 mm (0.01 inches) --> 0.200 0.002 100000
3 Phenolic rigid foam 020 --> 40.0 --> 200.00 mm (7.87 inches) --> 0.024 8.333 10 / 50
4 Normal concrete DIN 1045 --> 2500.0 --> 200.00 mm (7.87 inches) --> 2.100 0.095 70 / 150
5 Lime-cement plaster --> 1800.0 --> 15.00 mm (0.59 inches) --> 0.870 0.017 15 / 35

I have underlined the "Thickness."
Does this mean that a 20cm (7 inches) phenolic rigid foam board needs to be installed?