Hello peeps, I'm about to undertake insulating my VanCullo Fiat Ducato. I'm looking at insulating the floor with insulation boards, I have come across the above, they are much cheaper than celotex/kingspan etc. Has anyone used these Fastwarm boards in their builds? TIA. Boycee
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I think you forgot to attach the image / link Boycee!
However from my research just now, Fastwarm is XPS or EPS rather than Polyiso. Broadly speaking Polyiso is a better insulator (and a lot better for the environment). However there's not much in it. It's worth looking at the spec sheet for the insulation you are looking at to get the R-value (Discussed here: https://www.thevanconversion.com/post/van-insulation)
How many cm's you looking at getting and what sort of temperatures / seasons / geographical locations will you be travelling with the van?