Dekalin 9735 alternative? Very expensive.
Not that I need any but is there a cheaper maker for underfloor protection? Not for the metalwork but the ply' floor.
Someone mentioned Raptor but this is metal paint not wood or do I not see the link?

There was a bit of chat about sealing the underneath of our Eribas recently:-

Wax Seal

Wax oil is ok on the metal work but the floor has to be breathable.

I often wondered about the underside of the a wooden floor, Rob-Jax (deceased) the Famous Eriba Oracle wrote this on practical caravan website in 2005.


Thoughts on a modern caravan floor: Our Eriba floor is a standard plywood / foam / plywood bonded sandwich, with a bottom breathable membrane and protective coat. If you have this type of floor, don't cover it with any sealant - it needs to breath.

Attempts in the 1970's to seal Eriba floors with an all-round waterproof coating were not successful - many 60's Eribas have their original plywood floor and all 1980's onwards will be original - but probably not those from the 70's. It's nice to have a group of long lived caravans on hand - then you can look back at what was a "good idea" 30+ years ago and see if it really was.

Is the answer the difference between sealing and waterproofing the floor ?
Waterproofing allows the water to be repelled and the plywood dries off.
Sealing would mean that any ingress of water would just sit between the sealant and the plywood ?