I am working on a group project through my university and we have been desperately trying to find alternatives to fiberglass. A friend of ours has used basalt, but we have been trying to find hemp that has been manufactured with similar properties to fiberglass sheets. If anyone knows of any supplie...

Do you by chance also know the standard for split board inserts? I believe they are 2x6 instead of 2x4. but not sure.