When stains have shown through old paintwork does the stained area have to be taken back to bare wood before applying knotting or can it be applied after a general sanding?
Many thanks
PWhen stains have shown through old paintwork does the stained area have to be taken back to bare wood before applying knotting or can it be applied after a general sanding?
Many thanks
P
I had the same problem (lazy builders decorators) and just put knotting on the keyed surface. So far (for one area two years later) the stains have not re-appeared.
Malcolm
Thats great .... thanks
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