UFH on when tiling?, Adhesive etc

[Ajax123]

Not sure if this is in the right place but I'm sure it will get moved if not.

Anyway - we all know that in screed underfloor heating should be comissioned and run prior to tiling onto a screeded floor. (I hope we all know that )

I guess we all also know that the heating should be turned off prior to tiling. As the primers and tiling adhesives work best at room temperature it makes sense to use the underfloor heating to maintain the "warm" floor whilst affixing tiles particularly at this time of year. I found out yesterday that this is done regularly in Germany.

Has anyone ever done it this way. If not, why not and what do you all think the risks would be if you were to do it. It is certainly something which is being discussed in the contract flooring association for resillients. Seems sensible to me. Thoughts and comments welcome as always.

 

[Gazzer]

I tend to follow the adhesive manufacturers instructions, that way i sleep at night.
Saying that i cant see the difference really with the heating on at a low temp or a hot consevatory floor in summer.

 

[DHTiling]

As long as it does not create a problem with stupid setting times then it is fine IMHO..

Some floors are left on low at around +5dgs to allow the adhesive to hydrate correctly..

This is the main thing here, making sure the ideal situation is there for the adhesive and substrate compatibility.

 

[Diamond Pool Finishers]

it sound logical to me!!

 

[Ajax123]

Thanks Sir Ramic. I will be putting the same question to the addy boys over the next week or so. Will be interesting to see the response. I don't think I would do it in the smmer I am just thinking more for the recent months where I am sure tiling has had to be put back due to temperature. Maybe I am wrong......hence the question.

 

[Diamond Pool Finishers]

i see a film once in siberia ,they were mixing sand and cement with hot water :lol:

 

[Ajax123]

i see a film once in siberia ,they were mixing sand and cement with hot water :lol:

Actually Gooner we bin doing that in the concrete game for years. Used to be an extra £10 per cubic meter for concrete with hot water.

 

[Diamond Pool Finishers]

well you lean somthing new every day!!cheers ajax:8:

 

[Daz]

I had a large slate floor to do back in Jan when it was proper cold. Customer was living in the house so did not want to turn wet UFH off. I checked with Ardex and they said that as long as the floor was kept at a constant temp (around 10 to 12 degrees c) they would be happy to maintain guarantees.

 

[Stephen@Weber]

It was my understanding that it was OK to do this as long as the floor was no hotter than 15 degrees. That is certainly the advice from one major adhesive manfacturer.