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The white foam is extruded polystyrene...the most R value is from polyisocyanurate
Thanks! Good to know. This stuff was about $15 for a 4x8 sheet so it was in my budget.
The white foam is extruded polystyrene...the most R value is from polyisocyanurate
Thanks! Good to know. This stuff was about $15 for a 4x8 sheet so it was in my budget.