Insulation for hull and headlining

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Pame352

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After 17 years the foam backing of our vinyl headlining has started to disintegrate and the headlining is coming away from the balsa-cored GRP coachroof. There's a similar problem with the hull lining in the cabins.

While we're replacing the headlining, it occured to us that we should be able to improve insulation and reduce condensation at the same time.

Does anyone have any recommendaions for suitable insulation that's easy to stick to grp that's either got a fair finish or else is easy to stick headlining vinyl to?
 
Replacing headlining is a nasty business but the results are well worth it.Many boats have the main parts of the headlining fixed to thin ply sheets whit are then fixed to the deckhead, either directly or via wooden battons which are in turn fixed to the deackhead, this gices better insulation for the cabin and makes later replacement much easier.

Many boats use carpet for the hull lining, either special boat stuff or suitable ordinary carpet.

For fixing directly to the hull both headlining and carpet use contact adhesive, spread on stuff direct to GRP and spray on the covering. Headlining suppliers can provide the right stuff.
 
If you use this method of attaching the headlining to ply sheets, attached to wooden battens, you can insert insulation (sheets or fleece) behind them to give even better insulation. Use fire-resistant insulation (and headlining material), though.

Others have warned about the solvents in the adhesives - very dangerous in a confined space - take proper precautions
 
3M do an insulation material called Thinsulate in sheets which might fit the bill. It is widely used in steel barges and similar. The sheets are cut to size and stuck on with water based adhesive with the final covering on top.
 
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