brown water stains to ceiling

[stevethebiker]

hi guys which zinsser do i use to stop brown stains from joist timbers coming through on a ceiling. ( rain during loft conversion )

which will stop the stain and take emulsion readily afterwards

i know this comes up often, but could not find a thread today

thanks, steve

 

[roughcaster]

For all water stains/nicotine stains, i use nothing else but Berger's
white oil based undercoat,,, cheap as chips, but works every time.

 

[joe-90]

Any old oil based undercoat will do.

 

[minoka123]

hi
you will need to use an oil based paint eg white undercoat or you can buy a stain block in a tin or a spray can

 

[rustyw777]

zinzer BIN is the one to use shellac based you could also use Zinser Oil Based or as the others say any oil based primer / eggshell do not use a water based product it wont work