ᐅ Hot Water Recirculation Pipe – What Insulation Should Be Used?

Schmello schrieb:

I have seen pre-insulated composite pipes with 20x2 and 13mm (0.5 inches) insulation... would that be sufficient? At least in the shafts, which run through heated rooms. Then possibly only replace the insulation in the basement if it is too thin.

No one here can answer that because nobody knows the routing in your house. So your plumber is definitely the right contact!

I wouldn’t be surprised if you need a 25mm (1 inch) insulated multilayer composite pipe in the basement, and only reduce to 20mm (3/4 inch) or smaller on the upper floors; this also depends on the appliances and their type. Additionally, the choice of material depends on your craftsman’s pressing tool; not every press or press jaw matches every multilayer composite pipe.

By the way, just noticed @wrobel where are you hiding....

Regards, Bauexperte

nelly190 schrieb:
Why does a professional always have to do everything? I don’t really understand the point of hardware stores or specialty dealers selling to private customers then.

Painting, installing flooring, drywall work, retrofitting a roof with insulation between the rafters if you have a basic understanding, tiling, and especially a lot of work in outdoor landscaping—there are plenty of non-critical trades where you can experiment as a hobbyist.

However, when it comes to water, gas, and electrical work, it’s probably best for amateurs to keep their hands off. The legal basis usually comes from the technical connection requirements set by the utility provider.

Bosy provides a good overview of what is sufficient and what is not. However, 100% compliance with the energy saving ordinance usually requires more than 40mm (1.6 inches) for most materials.

Grym schrieb:
Painting, installing flooring, drywall work, retrofitting the roof with insulation between the rafters if you have at least some basic knowledge, tiling, and especially a lot of work on outdoor landscaping -> There are plenty of low-risk trades where you can try your hand as a hobby.

When it comes to water, gas, and electricity, amateurs should probably stay away. The legal requirements, as far as I know, come from the utility provider’s technical connection conditions.

When it comes to gas, there is probably no debate that you need to know what you’re doing. Otherwise, for example, electrical work must be certified by a professional anyway. So if you know which cables go where, anyone can lay them. Connecting a socket is something a primary school student could do. I find, for instance, laying tiles much more demanding. But as an amateur, you can take your time with that, and usually, the result turns out just as good as a professional tiler’s work. Some people must really be all thumbs and then some, judging by some of the things I read here.

...or simply a different focus in life.

BeHaElJa schrieb:
...or simply a different focus in life.

But then that is HER focus.
If someone says they would like to do this or that, there is no need to spread panic about everything that is NOT possible.
For example, driving a car is definitely much more complex than laying a cable and connecting a socket.