Insulation sequence question

[pleasestartnow]

Hi folks,

So my van just passed the cvrt test and now it’s time to put it back together before heading away. I had to take out previous insulation to sort some rust and now I want to redo it correctly. I’m only redoing the rear of the van and the sliding door, I will do the roof when I get back as I don’t want to open that can of worms yet.

I’ve never had sound deadening so that doesn’t really bother me and my main insulation will be the recycled plastic type, https://www.diy.ie/departments/diall-in ... 812_BQ.prd. Previously there I had the reflective type attached to the metal and so my question is.....

Should I put the reflective foil back on the metal (Or is it even worth it?), then the recycled plastic insulation and then a vapour layer before putting back on the panelling or does the vapour layer go somewhere else?

[ZsZ]

I would only use closed cell foam. PE or rubber (same material as a yoga mat, brans are: armaflex, kaiflex, dodo mat etc.). 

[pleasestartnow]

Only used the closed cell stuff and not any other form of insulation? Or use that instead of the reflective stuff

[ZsZ]

Usually those self adhesive foams are dual purpose (sound+heat insulation) as they are dense.
But you can use two layers one butyl sound deadening and one foam heat insulation.
Combe Valley Campers have some vids about it.

[pleasestartnow]

Oh thats really handy, i hadn't seen their channel before. Thats perfect so. On to the other list of jobs