Jumbolene® Heavy Duty Roof Insulation is double-sided reflective foil insulation, with a 5mm thick polyethylene foam core, that provides a radiant barrier, reflective insulation and a moisture barrier. It protects your roof space from heat build-up due to radiant heat penetration by acting as a heat barrier to protect all services within the roof space from drying out, cracking and degradation due to solar heat gain. It is a cost-effective insulation that is suitable for use in metal deck roofing system in residential, commercial, industrial and horticultural buildings where temperature variations are moderately/relatively high and where there is a need to reduce the disturbing rain noise.