Oak faced ply,

  • Thread starter david and julie
  • Start date

david and julie

Got a problem with some oak faced ply which I have fitted inside a boat. When I fitted these boards it was very dull outside. Since then and also under a better light, I can see black marks which look like water marks on the surface. The wood yard don't want to know as I have cut the boards to size. The marks are quite deep and will not sand out.

A nearby boater suggested caustic soda may clean them followed by flatting off and oiling or varnishing. As anyone any other suggestions (other than the obvious) ;)
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24 Nov 2004
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United Kingdom
Caustic soda will bleach the veneer so you would need to do the lot to make it look even. Rustins do a product called Wood Bleach specifically designed for this. You would then need to stain the veneer or it will look very pale and not much like oak.

Water-marks will often sand out but I guess if it has been left standing wet for a long time the marks may be too deep. Contact with iron or steel will cause black marks in oak due to a reaction. If this is the case I think it is unlikely that bleaching would hide these marks.

Would it not be possible to stain the veneer darker to try to hide the marks (make sure you use a light-fast stain.)
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