Has anyone heard of coating undercarriage?

bonniej0 wrote:
I just bought a 2001 Holiday Vacationer 33' and I was concerned about the undercarriage. The gentleman that sold it to me is a used salesman and he does his own repairs. He told me it would cost $700 to sand blast/ sand surface rust, the undercarriage and spray chemicals to protect undercarriage from rusting any further, is this a bunch of bs or for real and how much should it cost?

Drive the top of the world highway, your undercharge will get sand blasted.

enblethen wrote:
It is too late to put any undercoating on the rig.
Best thing to do is keep it clean using pressure washer before winter.

X2 its really a bad idea to coat over rust, it will compound any problems and there is really no way to clean it all off. Atleast not for $700.00

I'm sure they can do that, and in my opinion, the price sounds reasonable. But you are looking at a 2001 vehicle in snow and salt road ridden Massachusetts? I think your situation would be the same as here in Indiana. If the undercarriage was not protected in 2001, the damage is already done by 14 years of winter salt and chemical corrosion from the roads. Even if the camper did not move when it snowed, it's probably still laden with rust that has already done deterioration to everything. Blast away the rust, and how much metal is left anyway. I think you're wasting your money if you do. Those types of protections are only worth while when the vehicle is new. Beside, unless he can completely remove everything and treat every minuscule spot, the existing rust will be under the treatment and will continue to spread anyway. Personally, I don't think there is any advantage to doing this. Someone else may have a different opinion.

It is too late to put any undercoating on the rig.
Best thing to do is keep it clean using pressure washer before winter.