Polyethylene Foam have suitable mechanical characteristic, insulating and damping properties. It also have a low permeability to water vapour and limited water absorption. It is often used as roofing insulation.
RUBBER INSULATION (ARMAFLEX)
Armaflex Class 0 is a flexible elastomeric foam based on synthetic rubber insulation material that reliably protects against water vapour ingress due to its closed-cell
