Parquet adhesive on underfloor heating, solvent-free and low emission?

Hello everyone!

It will certainly take us a while before the topic becomes urgent, but I would like to get some information about parquet adhesive in advance. So far, I have always installed all "wood floor coverings" as floating floors and am now considering gluing them down in the future house.

Who is knowledgeable about this topic and can provide concrete advice on what to pay special attention to?

To be honest, I am not clear about this because many product descriptions hardly differ from each other despite sometimes significant price differences.

Is it enough, for example, to trust that the adhesive has the following properties:

1. water- and solvent-free
2. very low emissions according to EC1 and odorless
3. suitable for underfloor heating

How should the different open times be evaluated? Some are given as approx. 30 minutes, others up to 50-60 minutes. Is longer better or not necessarily?

Shelf life is mostly stated as 1 year.
Is the adhesive unusable after that, or is this information just formal and has little practical relevance?

Specific example:
Does anyone happen to know the Murexin X-Bond MS-K509 adhesive and can recommend it?

Thanks in advance!

Is it enough, for example, to rely on the adhesive having the following properties:

1. water- and solvent-free
2. very low emissions according to EC1 and odorless
3. suitable for underfloor heating

Yes. But don’t just rely on it, pay attention to the description

How should the different open times be evaluated? Some are given as about 30 minutes, others up to 50-60 minutes. Is longer better or not necessarily?

The longer it is open on the floor, the longer you can lay the parquet. Since you as a "layman" will probably only work on smaller areas, 30 minutes are sufficient.

Is the adhesive unusable afterwards or is the specification just formal and has little practical relevance?

It's like with food. Still usable after a year. Maybe after 2 years the top layer is already cured (kind of like the skin on cooked pudding) and underneath you can still use it. But I see no reason to keep the adhesive lying around for that long. There’s no need to hoard it.

By the way, I have had very good experience with Bona.

Thank you!

Yes. But not to trust, rather to pay attention to the description

Trusting the description was meant

The longer it is open on the floor, the longer you can lay the parquet. Since you as a "layman" usually only work on smaller areas, 30 minutes are enough.

They will not necessarily be smaller, but of course it is relative. 30 minutes seem sufficient to me, although due to lack of practical experience I cannot assess whether a longer time is better or possibly even disadvantageous.

It’s like with food. Still usable after a year. Maybe after 2 years the top layer has already cured (sort of like the skin on cooked pudding) and underneath you can still use it. But I see no reason to leave the adhesive standing somewhere for that long. There is no need to hoard it.

By the way, I have had very good experience with Bona.

Ok, good to know! I thought that after 12 months it might actually cure or lose its adhesive properties so that you can no longer use it or shouldn’t.

For selection, I would strongly recommend the technical data sheets from the manufacturers; they are much more helpful than a description on a bucket. I found good advice in a specialty store with processing experience necessary. Both approaches gave us the same result, which provided some reassurance. What you choose also depends a bit on yourself.

With the knowledge we have, I would avoid 2K material; it is too toxic to handle in my opinion. Once it has cured, however, it is very harmless. Additionally, I would avoid a material that cures completely rigid. I preferred one that remains somewhat elastic. There are seasonal changes which are then well absorbed. It can also happen that you accidentally create a spot somewhere that is under some tension. Overall, you can say that if nothing evaporates during processing, it often emits for a very long time afterwards (plasticizers, for example). I did not find much adhesive strength combined with only healthy ingredients anywhere on the market. Avoiding permanent emissions would be more important to me, but everyone must decide that for themselves. I personally find working with drafts more acceptable. An adhesive that stays open for a long time often hinders progress in the work.

Our adhesive, however, had a consistency that takes some getting used to; it was like sticky honey with an unpleasant viscosity. With some practice it went well, but I found it nasty. Opened buckets could only be used the next day if the surface had been sealed airtight with cling film. Even then, you had to remove the top few centimeters, and removing the cling film was a mess.

We used Wakol MS 260. Be sure to order the cleaning wipes with it. I don’t even want to know what’s in them, but I needed them.

Best regards
Gabriele

Thank you for the feedback!

My problem right now is that the technical datasheets are sometimes very similar, but the practical experience with the respective product is missing. Therefore, the evaluation "bad/good/better" is somewhat difficult.
I will take your suggestions into account, thank you very much.