Walls and Ceilings - Spraying texture onto FRP

I'm reworking the bathroon in a trailer I'm renting. The walls are covered with FRP and I want to make all the seams and extra trim pieces go away by putting bullnose on outside corners and patching gaps in inside corners and seams. Sparying the whole room with an orange peel will be a nice way to blend all the patchwork together. My question is how do I get the texture/mud to bond/adhere to the FRP. Tim Cerka

Welcome to the forums Tim!

What's FRP? are you the mobile home owner? or the renter? is this an old style MH? or does it have the 1/4" drywall with a printed vinyl face?

Generally it's not a good idea to tape or fill the joints on MH walls. Any movement of the MH tends to crack the joint. The success rate improves if the MH is well set up and isn't moved in the future.

Marksr, I believe the OP is talking about Fiberglas Reinforce Panels made of solid vinyl. It is used mostly in restaurant kitchens and public rest rooms and has a pebbly surface. It certainty isn't intended to be mudded and taped and I doubt the joint compound would stick.

The place that I'm renting is set on a foundation. The original construction is from the 70s and additions have been added on over time. There is no drywall in the bathroom, the FRP (fiber reinforced plastic) panels are glued onto another layer of paneling. I wont be taping any seams just calking big gaps and using the texture to smooth over the obvious faults. Some have had success by scuffing the surface and I was thinking of using something like Trim-Tex's Tex11 adhesive to help with bonding.

If you are hell bent on putting mud on and texturing the frp, I would suggest painting it first. The mud will stick to the paint. If it were me I would stick with the trim pieces or rip it down all together and start new.