https://www.diggerslist.com/items/142423/rigid-foam-insulation
We have large quantities of 4'x8'x3.5" ISO rigid foam insulation, available in pallets (26 sheets per pallet) - Shipping is available in truckload quantities...
rigid foam insulation
https://polyglass.us/product/polytherm-g/
Polytherm G is a closed-cell polyisocyanurate insulation board with glass facers, ideal for self-adhered membrane systems. Find out more.
rigid insulationboard