We removed a picture rail when we had our lounge plastered. We are
getting ready to paint but there are rust spots along the wall where
the old nails were. Do we need to seal the rust spots to keep them
from bleeding through the paint or will that not be a problem? If we
do need to seal, any recommendations? Thanks for any help!
==================================The rust spots are probably where the old nails have been left in place.
If there aren't many the best solution would be to gouge out some of the
stained plaster, remove the nails if possible but if not then paint
each nail with a bit of oil-based paint. Finish off with Polyfilla.
Alternatively you could look for a stain block paint in B & Q etc. and see
if it's suitable for this purpose - i.e. painting over rust-stained
plaster. They're usually intended to cover damp stains but might work on
your rust stains.
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