Sealing underside of Camper

[eventyr]

We are going to be doing a lot of dirt road driving and some creek crossings. While I have sealed the penetrations under the camper (a Goldstream Storm) with copious quantities of silicone, I was also going to give it a couple of coats of sealant paint.

Has anyone done this and can you recommend a sealant paint that will work on both wood, plastic and metal surfaces? Mainly after the wood and plastic!

Cheers
James

[edz]

Not sure on the price of this stuff but it supposedly works a treat on caravan etc roofs to seal them and keeps the heat out so it should work in some degree under neath to seal timber flooring http://globalcote.com.au/caravan-pack/  .
Normaly I would just paint fibreglass resin on the timber to seal it or give it a few good coats of Ormanoid bitumous paint [ Mongel of a sticky stuff though ] Both can be had at the big green shed .https://www.bunnings.com.au/diggers-1kg-fibreglass-resin_p1565643  The resin covered aprox two coats of a 2.4m  long x 1.8m ply floor sheets on one side and left aprox 1/4 of a tin over.
1 ltr tin of ormanoid only just covers the same area ^^^  on one side as it soaks into the ply.