Polycore can supply exterior insulated roof sheeting for your existing roof ranging from R18+ to R50+, 4" to 12" thick EPS sheeting. A Polly vapor barrier is laid between the existing roof surface and the insulated roof sheeting. The structural steel studs in the insulated roof sheeting will fasten to the base of your roof and allow attachment for steel sheeting or plywood for a shingled roof. The insulated panels are ship lapped designed to ensure that there is no thermal bridge optimizing energy efficiency. The lightweight insulated roof sheeting will restore the energy efficiency of your older roof without putting additional weight load on your existing structure. The Polycore Insulated Roof Sheeting is a simple and cost effective solution to restore energy efficiency in older residential roofs.