I have some varnishing to do in the bathroom. I have removed the plastic bath panels i made and have now replaced them with wood. Its only the thinish T&G cladding type but I need to make sure it doesnt rot. I have also made a step to get into the bath, this was made from a B&Q window sill. Its very thick so wont dip or warp but this too needs to be varnished and I need to somehow make it non slippy. Whats the best varnish to use and whats the best way to do it please. It will have a light coat of antique pine stain too.
Thanks Sam