My 2008 STARCRAFT 14RT off-road version POPUP uses OSB Particle Board material for the flooring. Have no idea if this is better or worse from Regular Plywood or Marine Plywood.
Have not had any issues with my floors and we camp alot off the power grids.
My flooring is not protected from the bottom using any of the underbelly membrane type material.
The OSB flooring looks the same to me as it did when new... You can identify OSB flooring with all of the small wood items all glued together...
NOTE: after seeing RIMCOUNTRYs comment I went and looked under my Starcraft 14RT OFF-ROAD POPUP and it does indeed have the black colored coating applied to the bottom only. On top it does not have this coating when looking inside cabinet floors etc...
Roy Ken
