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PAINT & PLASTER: Trying to paint over it. Ideas wanted.
We are working on a bathroom that was covered in vinyl wallpaper. The walls have been treated to remove the wall paper paste. Removing it left sections of the original Navaho White (mud color) paint and sections of bare plaster. The paint and plaster sections are very intermixed (dots, spots, measels and splotches of plaster amid the paint) and the paint layer is higher.
High enough to show up under any layer of paint.
The wife has been busy with some test panels to prove the adage that paint will cover but won’t hide irregular surfaces. She thinks it will – in four coats. Maybe five. Six?
The paint is well adhered. We have been sanding with 60 grit, which knocks it down a bit but is not about to sand the paint even with the plaster in my lifetime. (On the boat – 1100 miles N. – is an 8″ grinder and foam pad that would sand the whole bathroom into dust with nice 36 g. disks. Anyone make 36g for 5″, 8 hole orbital sanders?)
What do you recommend in the way of a skim coat over paint/plaster, a full-wall spackle session or ???
Replies
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PAINT & PLASTER: Trying to paint over it. Ideas wanted.
We are working on a bathroom that was covered in vinyl wallpaper. The walls have been treated to remove the wall paper paste. Removing it left sections of the original Navaho White (mud color) paint and sections of bare plaster. The paint and plaster sections are very intermixed (dots, spots, measels and splotches of plaster amid the paint) and the paint layer is higher.
High enough to show up under any layer of paint.
The wife has been busy with some test panels to prove the adage that paint will cover but won't hide irregular surfaces. She thinks it will - in four coats. Maybe five. Six?
The paint is well adhered. We have been sanding with 60 grit, which knocks it down a bit but is not about to sand the paint even with the plaster in my lifetime. (On the boat - 1100 miles N. - is an 8" grinder and foam pad that would sand the whole bathroom into dust with nice 36 g. disks. Anyone make 36g for 5", 8 hole orbital sanders?)
What do you recommend in the way of a skim coat over paint/plaster, a full-wall spackle session or ???
The walls need to be primed with oil based primer and skim coated with all purpose joint compound. A good taper can probably skim a small bathroom in under 2 hours per coat. No amount of sanding or buildup of paint will make it smooth and 36 grit sandpaper will just leave swirl marks all over the walls.
Taking off the high spots makes it easier to skim the walls but you are trying to fill in the voids and add an 1/8” of compound not sand off an 1/8 of plaster.
Skim coating took me about 10 years to get good at so I suggest hiring a professional and doing what you’re good at to pay them. I skim coat walls so I can pay my mechanic can fix my truck. Otherwise learn to love imperfections or come up with a creative solution.