I just bought a Trail Lite B+ 211s with 8.1 Chevy engine. This is my fifth motorhome (others range from an old 20' Vagabond, and three Winnegagos, from 19 to 32'. This vehicle is fantastic. I am...
Aggie, the top layer of my '05 213 is pressboard, I suspect the lower layer is plywood. I would drill a few small test holes from bottom and top after some exhaustive recon.