Foam board insulating the interior walls of static caravan



I am currently attempting to insulate the static caravan i currently live in.

As it is rented i cannot open up the existing walls so am having to insulate from the inside.

i bought some 'kingspan' or another make of rigid foam boards with a foil backed side from a seconds outlet.

I have screwed the insulation boards directly onto the plywood walls and then covered with hardboard.

I am currently concerned about the 'dew point' and have been trying to gain some kind of help and advice with this through a post in the forum.
"insulation board. what way round should foil side face?"

I have removed a section of hardboard and insulation (its been up for 2 weeks) to see whats happening to the plywood wall and found it was very cold and as if there was moisture there.

I have removed another section on a different wall and this seems fine.

i am worried that if i continue to insulate the walls and then decorate etc is there a damp problem that will be occurring in between the insualtion board and the plywood and will i be slowly rotting the plywood which would be a great disaster.

If anyone can help please see my post in the forum and respond.


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14 Oct 2009
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United Kingdom
have you got skirts on the caravan and insulated under the caravan????.

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