Diverse inventory; Save 50-75% compared to new; Pallet or truckload quantities; Environmentally responsible; Mailing Address. Material located in Framingham, MA. How long is delivery? Better insulation value than 1" thick but still slim enough to be great in most applications. window.__lc.license = 11986599; Probably our best seller - 1" rigid foam insulation is easy to work with and when properly installed, is a great choice for insulating a space against wind and drafts. PLEASE CALL, EMAIL OR TEXT FOR OUR CURRENT IN-STOCK SIZES. XPS rigid foam insulation for sale - New Factory Seconds – great for below grade applications!