ᐅ Insulating plastic fittings/water pipes and underfloor heating under the screed?

Created on: 14 May 2016 17:48
A
AndreasW
Hello,

as shown in the two photos, the hot and cold water pipes are insulated. The plumber says the fittings (connectors) do not need to be insulated because they are made of plastic. Is this correct, or could this cause problems regarding thermal insulation, condensation, or noise?

The pipes are located under the screed, meaning there will be polystyrene insulation and a self-leveling screed on top.

The plumber suggests he could wrap fleece over them, but says it is not necessary. What is your opinion?

Best regards, Andreas

Baustellenboden mit Kabelkanälen und Metallrohren auf Sandboden.


Holzfußboden mit installierten Metallrohren, flexiblen Kabelkanälen und Metallclips.
H
Holger79
27 May 2016 11:27
@Sebastian79
I should probably stop. The slope of the drainpipe also looks too steep.
S
Sebastian79
27 May 2016 11:28
You don’t need to know the house for this... It’s simple: a house without a basement, with underfloor heating throughout the ground floor – where will you run the pipes from?

Are you aware that the screed is insulated?

Interested in how you evaluate a slope like this? Also, this is not a 100mm (4 inches) soil pipe, so you can actually have a steeper slope...
H
Holger79
27 May 2016 11:52
@Sebastian79
The pipe length for a non-vented wastewater line has definitely been exceeded here as well.

Test: Simply measure the temperature of the insulated heating pipe and if you find it is below 25°C (77°F), you can install it under the screed...
S
Sebastian79
27 May 2016 11:53
You really have trouble answering questions—it's a pity, but in my eyes, that makes you just a blabbermouth...
H
Holger79
27 May 2016 12:01
@Sebastian79
The screed is installed for the first time without insulation!
Floating screed or heated screed is installed with insulation.

Why should the screed have insulation? Doesn’t the slab have any insulation? Soundproofing on the ground floor is unlikely.
H
Holger79
27 May 2016 12:02
Oh, I hope they use 100% insulation under the screed *laugh*