To eliminate these problems seal it with a coat of shellac first and then use your chalk paint.
Chalk paint over stained furniture.
Typically two coats of chalk paint will do the trick.
Here a vintage bookshelf hall table that has seen better days has.
2 clean the furniture.
And if you use a water base poly on top to seal it it may give you a crackle affect which you may or may not want.
Sand any areas that feel rough and you re done.
This cleaning solution removes sandpaper dust but.
You don t need to strip anything off your furniture which includes old paint or old finishes.
How to paint furniture with chalk paint 1 pick your paintable piece and gather supplies.
Apply with a high quality brush in a very thin coat.
Allow to dry overnight.
Any type of polyurethane can be used over chalk paint.
Lightly sand with the 220 grit sandpaper over areas that feel rough to the touch apply 2nd coat of polyurethane.
Any of the brands listed in this post including our top pick can be used if you want to use poly over chalk paint.
That should prevent bleeding and crackling.
Sandpaper helps add texture to smooth.
Wipe off any excess paint around the paint cans using a clean rag before storing.
Even better each coat will dry in about 20 30 minutes.
3 use the chip.
Best top coat for milk paint.
Allow to dry overnight.
Sand the stained or varnished furniture using 220 grit sandpaper.
Use paint thinner to clean off brushes used for oil based paints.
How to paint over stained varnished furniture step 1.
Some are just better options for others but water based and oil based polyurethane can go over chalk paint just like latex paint.
It goes on easily is somewhat thick and has pretty good coverage.