Hi
I have removed a picture rail from some walls and there is a wooden batten where this used to be. It's nailed into the walls flush so I have filled with tetrion but a yellow rust colour is seeping through.
I plan to line the walls with 1200 lining paper but am worried the colour will come through after painting.
Can I prime/seal the filler with anything? Stain block, oil based undercoat?
Any help much appreciated .
I have removed a picture rail from some walls and there is a wooden batten where this used to be. It's nailed into the walls flush so I have filled with tetrion but a yellow rust colour is seeping through.
I plan to line the walls with 1200 lining paper but am worried the colour will come through after painting.
Can I prime/seal the filler with anything? Stain block, oil based undercoat?
Any help much appreciated .