What type of vapor barrier for underfloor heating?

[Anna1984]

I'm going to install underfloor heating on the upper floor. According to the underfloor heating supplier, I should place a vapor barrier on top of the heating pipes and then have floor gypsum on that, followed by laminate flooring.

The supplier states that the vapor barrier should be PE film, thickness 0.2 mm.

I've looked at various vapor barriers and can't really see any major differences.

Would you recommend any of these:

Underlay Provent 3mm
http://www.bauhaus.se/underlag-provent.html?nosto=nosto-searchpage-1

PE vapor brake film
http://www.bauhaus.se/pe-angbromsfolie.html?nosto=nosto-searchpage-1

Tupex underlay
http://www.bauhaus.se/tuplex-underlag.html?nosto=nosto-searchpage-1

 

[SBH]

first works for floors without fixed damping

second only plastic, complement with paper or or foam

third works for floors without fixed damping

 

[Anna1984]

first works for floors that do not have attached cushioning

second only plastic, complement with paper or foam

third works for floors that do not have attached cushioning

I will be using the following floor:

http://www.berryalloc.com/se/sv/Floors/High-Tech-Laminate

That floor has pre-attached cushioning. Would it work with the cheaper vapor barrier then? That is, number two.

 

[Pärran]

Is step damping needed between the underfloor heating and the floor gypsum? Why should there be a vapor barrier at all?

 

[SBH]

I will be using the following flooring:

[link]

That flooring has pre-installed cushioning. Would it work with the cheaper vapor barrier then? So, number two.

yeah. it would be strange with more cushioning

 

[Anna1984]

Is step noise insulation needed between the underfloor heating and the floor gypsum? Why should there be a vapor barrier at all?

Step noise insulation is not needed. It is already on the laminate floor. But a vapor barrier is needed. According to the manufacturer, this is necessary to prevent any condensation in the construction from being absorbed into the back of the planks.

 

[Anna1984]

jo. blir konstigt med mera dämpning

Ok, so do the others have built-in floor damping?

I would like to go with number two since it is cheaper, but it doesn't say how thick it is. The supplier wants it to be at least 0.2mm.

 

[SBH]

Ok, so the others have built-in floor cushioning?

I would like to go with number two as it's cheaper, but it doesn't say how thick it is. The supplier wants it to be at least 0.2mm.

you need to find an excuse to go to Bauhaus then. it usually says on the packaging anyway

 

[SBH]

Kährs uses T-packaging plastic wrap

 

[111111]

Could this be something?

http://www.isola.se/produkter-sv-SE/golv/platon-fuktskydd-golv/platon-stop-original/
You should probably remove the floor's "original dämpmatta" if this is used.

 

[SBH]

Could this be something?

[link]
You should probably remove the floor's "original damping mat" if this is used.

yes. if you want to go up in price

 

[Anna1984]

Could this be something?

[link]
You should probably remove the floor's "original damping mat" if it's used.

Nah, it feels a bit unnecessarily hi-tech actually. Looks expensive and also I would have to remove the soundproofing system that's under the laminate floor and that feels really unnecessary. I really just want a simple vapor barrier that meets the requirements of a vapor barrier and is at least 2 mm.

 

[Anna1984]

Got a response from the flooring supplier that I should not use any of the above vapor barriers as they are underlays combined with PE film. I should only have PE film that is 0.2 mm thick (age-resistant vapor barrier).

What should I buy then? I've googled a bit but it's hard to find it. Thought it would be available at Bauhaus or other building markets.

 

[SBH]

Received a response from the flooring supplier that I should not use any of the above vapor barriers as they are underlay combined with PE film. I should only have PE film that is 0.2 mm thick (age-resistant vapor barrier).

What should I buy then?

Not t-emballage either?

 

[Anna1984]

Not t-packaging either?

I didn't ask about that. But I assume it would work. He specifically wrote PE film. But I'm not quite sure what is meant by PE film.

Also found this:

http://www.byggmax.se/isolering/byggplast-och-vindskydd/aldersbestandig-plast-p21022

But PE film isn't mentioned there either. I'm not really sure what distinguishes PE film from the others.