wood stain bleeding through paintwork.

[Bevmarley]

I am trying to paint wood stained skirting boards but although I have given them three coats of underciat the wood stain is still bleeding through. Any suggestions for a product that will stop this happening. Thanks

 

[88v8]

Shellac.
Or perhaps a yacht varnish.
If the underlying stain is still so 'live' and oily, there may be adhesion problems even if you are using oil paint, so perhaps start with a good rub down with white spirit.

Ivor

 

[Hobden]

so perhaps start with a good rub down with white spirit.

After doing this you might to sand lightly as white spirit can lift the grain ...

 

[Mickey]

Annoying and a pain in the backside......I have the same issue but on a slightly larger scale, in my naivety I thought no knots meant no bleed through so undercoated 6 new pine doors and now have bad yellow staining bleed through on some of them that I got as far as painting with top coat. Check out Zinsser products there is one, B-I-N Stain Killer Primer Sealer which is shellac based and also acts like undercoat which should do the job according to their blurb and reviews. I have not painted my doors again yet due to procrastination so cant comment on whether this sorts it 100% but I am hoping so!

https://www.gowallpaper.co.uk/zinsser-b-i-n-stain-killer-primer-sealer.html#utm_source=google_shopping

Mickey

 

[Bevmarley]

The same has happened to my skirting board's so I am a bit miffed but will try the sealer recommened on here for the rest of them.