Low Slope Roofing – Foam vs IB PVC

I am very confused in trying to compare my options for replacement of a leaky tar and gravel roof. I am deciding between foam and IB PVC (but am open… I am very confused in trying to compare my options for replacement of a leaky tar and gravel roof. I am deciding between foam and IB PVC (but am open…Read MoreGreenBuildingAdvisor