This is a professional 7mm sound and heat insulation material for a quieter and warmer van camper van or motorhome.
Camper van roof lining.
You can achieve a better level of insulation in the van by batoning out the shell fitting thicker insulation in the van and then plying over the insulation.
This will prevent any water vapour not ventilated making it.
Carpets panel trims headlinings etc the trim fix high temperature.
When choosing the best campervan roof vent for your setup consider.
Although there is an extra step in lining the van with plywood first in the long run i think it gives a cleaner finished product.
Many camper conversions add a vapour barrier over the top of the insulation and before lining the walls and ceiling.
There are other advantages to the fully ply lined van also.
The 7mm liner is a thermal equivalent to 100mm of glass wool.