Ceiling insulation

briche · Guru

Ceiling insulation

Dhutime · Senior Member

Polyester ceiling or wall batts would be good as long as it won't be compressed to much .
There usually isint much space up there.
Another good product is air cell that's 8mm thick and will stop the heat one thing though you will need or it will work better if you can have an air space on both sides of the product
Maybe the best is to fill the gap with polyester unless you can drop the ceiling .
Have fun it's worth doing
Dhutime

madaboutled · Guru

The insulation used in most caravans is polystyrene sheet at around 25mm thick. It's ussually put in during construction and it's a lot harder to add as an after thought unless your having the roof sheeting on either the outside or the inside removed, either of which is not a simple job. Have done it myself on an old van many years ago by replacing the ceiling plywood.

An easier option is to paint the roof with insulating paint and adding a spinning roof vent to suck out the hot air in the van, I did this on my last van and it worked a treat and I'm now contemplating doing it on the motorhome. The vent I used was something like this....

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Peter_n_Margaret · Guru

The best insulation for the thickness available is closed cell ridged polyurethane foam (available in sheets).
It is almost twice as good as polystyrene for the same thickness (and costs a bit more too).

Cheers,
Peter