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That would be the ideal. Out of curiosity what would be your concern about the limits of an exterior varnish on mdf?
For context:
My brick shed is a bit damp due to being single corse, no air brick and next doors garage being above the dmp.
I'm planning out a pegboard on one wall, but the metal ones are incredibly expensive. Unfortunately I haven't seen any MR MDF ones. I don't think the standard hard board ones would last.
I know the ideal thing would be to sort the cause of the damp, but that's quite involved and not a reasonable use of my time against the various other work that needs doing.
hugo7-
Problem would be fully sealing the board. You’ll never get varnish on to every edge in every hole so there’s always going to be exposed edge, which is the worst bit for moisture absorption
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I know I'm not answering your question, but what about the IKEA plastic peg board?
I had thought I'd have to overcome a similar challenge to yours, but in the end we've decided to knock down 2 old outbuildings and replace with something brand new that will be watertight, insulated, etc.
dbr
hazzelfrazzel
I wouldn’t put it in a damp environment.