Treating old wooden window frames - we have some oldish window frames
where pain flakes off fairly quickly when applied. The house was built
1970's, to a not terribly good standard. I assume the frames are treated
softwood, because there's no rot, but the surface of the wood has dried
out and is all grainy. Hence, the paint goes on, but does not last. All
the other houses in the road have plastic double glazing. Is this a hint?
Not an expert painter, but I would have thought that if the paint flakes
off then the wood has not been properly cleaned, primed and undercoated.
Paint should stick to wood if the wood is clean and dry when painted.
Is it possible that the frame is hardwood?
In which case I think it will need a different (aluminium?) primer.
You can also get a primer/filler which will fill in the grain - but wood
which is not smooth should still take paint, so I suspect that there is
another reason that the paint isn't sticking.
It's the old story of the solvent being sucked into the wood so that the
paint cannot form a proper film. IME wood hardener is the answer. If
you've done the hard work to get back to bare wood, it really is a no
Not sure about the "new" breed of one pack wood hardeners. They appear
to be based on moisture curing resins but I would always have more faith
in a 2 pack system
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