Polyiso insulation is one of the most popular types of insulation on the market today. It’s made from polyisocyanurate, a type of plastic, and it’s available in a variety of thicknesses. It’s known for its high R-value, which means it’s very effective at insulating against heat transfer. Our customer service team are always available to answer any questions you have. We also offer free shipping on all eligible orders, so you can be sure you are getting the best possible deal.