frankwp wrote:

As a veteran of 3 under-belly excursions with my last 5th wheel, I've learned to hate cloroplast. It is too floppy and is very difficult to put back exactly the way it came off. The ideal material would be more rigid and installed in sections maybe 3' wide that could be taken down individually. I've seen foam wall sheathing 1/2" or 3/4" thick that is really light & quite rigid, but I don't know if it would be strong enough:

Owens Corning

Or here's another product that probably would be quite strong:

Dow Thermax

Anybody have experience with either of these?

My new Cruiser has some sort of fabric cover, but haven't opened it up yet so I don't know how good it is. If it's as horrible as the cloroplast, I'd be tempted to try the Thermax

robrose1 wrote:

I am having the same issue. The previous owner cut the underbelly to add a gas line and taped it back together. Last summer I was in rain for 3 days and the belly just opened up. I found some gorilla tape and it lasted until the high heat of Arizona hit. Anyone found something else to seal it?

frankwp wrote:

As a veteran of 3 under-belly excursions with my last 5th wheel, I've learned to hate cloroplast. It is too floppy and is very difficult to put back exactly the way it came off. The ideal material would be more rigid and installed in sections maybe 3' wide that could be taken down individually.

Quote:

Most RVs do use a floppy material, but that is NOT Coroplast, which is a rigid corrugated plastic sheet used most frequently for outdoor signs. It is available in 4x8 sheets and different thicknesses. When I replaced the floppy material on my Cruiser a few yrs ago, I used 8mm thick Coroplast panels. They have held up very well and don't sag, each section can be removed seperately. The sections vary in width between 32" and 48" depending on locations of the Cruiser crossmembers. Google Coroplast.