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I am painting our entire wooden house (about 40 years old). Some is painted and some is stained. I have already started some sections and have some questions/concerns. Where I have painted the stained section, the undercoat has started to yellow/discolour. What am I meant to put on there before the undercoat?
The painted section is also not adhering, I think it is oil based and I asked the bunnings paint section man and he said the undercoat I bought would be fine to go straight on and I didn't need to sand the wood. I have spent a lot of effort painting this section and the paint just scratches straight off, it's not sticking to the wall at all. Is this normal? was I meant to stain?
Please help! Pictures attached.
Hi @indiaww,
It sounds like the stain is bleeding through your undercoat, which can happen if the original stain isn’t properly sealed. If you're seeing discolouration, you'll need a stain-blocking primer like Zinsser CoverStain Primer Sealer to prevent bleed-through before applying your topcoat.
For the painted section, when you say it's not adhering, are you referring to the undercoat or the final topcoat? Provided it was just a stain on the area and not a stain and varnish, then you should be able to apply an undercoat directly over it. It's varnishes that require sanding.
Could you let us know what undercoat you used? That will help determine if it’s the right product for the job.
Please let me know if you have any questions.
Mitchell
