If you do cut it up, I also second the sawzall. But make sure to get actual fiberglass blades. I had a boat a few years back that i replaced the floor in. Started with a combo wood and nail blade I had lying around. Dulled it good in a few cuts and really tore up the fiberglass into splinters rather than cutting it. Went to home Depot for more. I favor the diablo brand blades. On the rack there was one listed as fiberglass/masonry. It was a long toothless gritty edged blade. Like a tile grout scraper. Worked wonders. Clean and fast cuts. Just wear a mask. That fiberglass dust is no joke. I wore one while cutting. But I took it off for a break and the wind kicked up some dust as I inhaled a drag of my smoke. I was coughing for a couple weeks from it.
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