In message , Chris Green
writes
wrote:
The white MDF I found appeared to be white primer only, I'm not quite
sure how well that will last?

It doesn't, you'd need to topcoat it.
Personally I wouldn't want mdf in a boat, it doesn't survive getting
wet well.

OK, that pushes me back towards the hardboard option. It's not *that*
easy to find it though, not at a reasonable price anyway.

Is there no thin marine ply you could cut to size and then get sprayed
by your local car repairers?

Alternatively you could upgrade:-) My daughter now has two narrow boats
and mooring for only one! She is considering selling/renting out the
original as British Waterways appear to be re-thinking the rules.


--
Tim Lamb