Ok... I watched Larry's DVD on How to Foam Carve Your Haunted House. I have been tossing around for awhile about wanting to do some spray foam caves and tunnels. I decided to dial back the spray foam and to incorporate some foam board to do bricks and rock outcroppings.
My question is how good is polyisocyanurate foam?? Anyone with experience? I know what the white beaded foam and what the pink or blue foam does. What will the polyiso foam do if you want to create brick mortar lines with a rasp or weedeat the thing. I've seen a video where it is cut on a large bandsaw with an abrasive wire for the blade. Anyone tried a hotwire cutter? The melting point for the white/pink/blue foam is around 160f. This poly foam is about 300f. This stuff is also pretty rigid and in some cases considered a structural product. I have about 1300-1400 cubic feet in thick sheets available to me for a ridiculously cheap amount. Just looking for input before I commit myself.
My question is how good is polyisocyanurate foam?? Anyone with experience? I know what the white beaded foam and what the pink or blue foam does. What will the polyiso foam do if you want to create brick mortar lines with a rasp or weedeat the thing. I've seen a video where it is cut on a large bandsaw with an abrasive wire for the blade. Anyone tried a hotwire cutter? The melting point for the white/pink/blue foam is around 160f. This poly foam is about 300f. This stuff is also pretty rigid and in some cases considered a structural product. I have about 1300-1400 cubic feet in thick sheets available to me for a ridiculously cheap amount. Just looking for input before I commit myself.
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