Insulation of floor in motorhome build

[Plupp 511580]

Hello!
I'm wondering what type of insulation I should use under laminate flooring with underfloor heating (film).

The base is plywood with a plastic mat on top.
(I have bought a long-distance bus that I'm converting into a camper van.)

I have read a bit and wonder if Byggmax 50mm blue XPS 300 foam is most effective against cold bridging downward.

Should I consider anything else besides:
Foam
Building plastic
3mm mat that comes with the underfloor heating package
Heating film
And finally the laminate flooring??

Should they be laid in that order?
Should any layer be glued?
Should I cut grooves with an angle grinder in the floor to release condensation?

I would be extremely grateful for an answer.

Daniel

 

[Åsa Lund]

Wow, how cool to convert a bus! Looking forward to seeing how it turned out

 

[skoge]

Hello!
I wonder what type of insulation I should use under laminate flooring with underfloor heating (film).

The substrate is plywood with a plastic mat on top.
(I have bought a line bus which I am converting into a motorhome)

I've read a bit and wonder if Byggmax 50mm blue cell foam XPS 300 is most effective against cold bridging downward.

Should I consider anything other than:
Cell foam
Construction plastic
3mm mat included in the underfloor heating package
Heating film
And finally the laminate flooring??

Should they be laid in that order?
Should any layer be glued?
Should I cut grooves with an angle grinder in the floor to release condensation?

I would be extremely grateful for answers.

Daniel

https://explorista.se/el-i-campervan-info-lanklista-komplett-guide-till-att-bygga-campervan-del-5/

There is some information on that page about insulation.

 

[Plupp 511580]

Thank you! There was some useful information there.

 

[peterj66]

Exciting and inspiring project. The key is probably, as mentioned in the campervan blog, to ensure that any condensation that forms has somewhere to go.