Hundreds of high density sheets available of both 1/2" and 3/4" polyiso with fiberglass facing. All sheets are 4x8.
Polyiso, closed cell foam is the highest R value insulation that is commercially available. Excellent insulating value.
These products are great for use under siding providing a consistent layer of insulation on the exterior of your structure. Other customers have used these sheets on the interior of their pole buildings and then sprayed cellulose above or behind.
These are all factory seconds. Beautiful corners and edges. Still wrapped in the plastic.