Protocols for sample heating - Which form to use?

Hi!

We will soon be installing the screed and we are unsure how to proceed with the ready-for-coverage heating, especially since the general contractor will be done with the matter and the interior finishing will be carried out by individual trades.

The screed installer sent this here:



The parquet installer sent me these:



We don’t need to discuss which protocol looks more professional, but the question is what is actually correct. Everyone insists that their protocol is the right one.

The required time period also differs.

What is the best way to resolve this?

Asking the general contractor is pointless; he said it is unnecessary and if we want it, the construction time will be extended at our own responsibility, since ready-for-coverage heating is not included in the contractually guaranteed construction period of the contract for work. Ready-for-coverage heating is a habit of "old" parquet installers and is actually no longer done nowadays. On the other hand, the parquet installer says that it is precisely the "newer" parquet installers who do this, as it has only been a few years since this has been taken seriously here. And if we do not do it, a liability waiver must be signed.

I think it is clear that ready-for-coverage heating must be carried out. The question is, how do I commit to the correct protocol and then convince all parties involved to accept this protocol?

Now we have to wait and see what the tile installer demands. Hopefully, he won’t come up with a third variant.

The screed layers perform the functional heating according to DIN EN 1264; this is then followed by the covering readiness heating by the parquet layers. It should also be mentioned in the protocol of the covering readiness heating. Unfortunately, I cannot read your attachments.

The screed layer performs the functional heating according to DIN EN 1264;

He told me that the heating engineer would do that......seems to be different in every project.

The heating engineer took care of it for us and it worked out well.

55 or 60°C is absolutely exaggerated with today's underfloor heating and insulated cabins! Especially when you only have a heat pump as the source anyway. With correct design, the flow temperature will probably never exceed 35°C.

The parquet layer says that the form must strictly comply with the requirements of DIN 18356.