There is a marine product used on yachts that is epoxy based. You paint it on with a good thick coat, then wait 5 minutes and roll with a very course roller (supplied as part of the kit) which raises the texture. If you've ever been on a yacht then you'll know the textured anti-slip finish I'm talking about?
I've got a tin of it in the shed if you need me to look up the brand/name. If you're in the Waikato you can use some of mine if you want?
kj
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