I'm trying to waterproof the top edges of some wooden bathroom cabinet doors
that get dripped on from the sink top. The top edges are beveled at 45
degree angle to the counter top so the wood is kind of rough rather than
well finished. The Minwax polyurethane I'm using just sinks into the wood
and is absorbed rather than drying to form the clear barrier I'm looking
Is there another product I should try-- or just keep adding additional coats
is being applied. I don't know the product specifically that you are
using - I've used lots of wood finishes - but, it probably will take two
or three MORE coats on the end grain than on the rest of the surface,
and sealing the end grain is a good idea. Are you refinishing, putting
in new cabinets, or just sealing up already finished cabinets? Be sure
to let each coat cure well, not just dry, to avoid bubbling or peeling.
It's a good idea to seal the bottom edges of cabinet and entry doors,
and to caulk the bottom of wallpaper, as condensation can run down and
cause bulging/warping of wood or loosening of wallpaper paste.
Depending on how much you have now, but may be too late but the first step
is to burnish the ends. Take a smooth metal tool, like a shank of a
screwdriver, and rub it across the end grain. It smoothes down the fibers
and takes finish better. Keep adding until it is finally sealed. I usually
thin the first coat and then use full strength on the rest.
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