Child Item

How do I fix stop paint bleed through on internal window frame repair?

Recently indoor paint project to patch and paint flaking paint on BR window did not end well. Sanded right back to timber, painted and came up well until pink tinge came through. Never heard of tannins and bleed through but looks like it. Any recommendations on how to fix appreciated. Thanks in advance.

Find more posts tagged with

Tools and Materials

Repairing

Painting

Doors and Windows

Accepted answers

All comments

MitchellMc

Welcome to the Bunnings Workshop community @Willy7403. It's fantastic to have you join us, and many thanks for your question about bleed-through.

It looks like what you’re seeing might not be classic tannin or “bleed-through” at all, but more likely a reaction with the paint itself. To help narrow it down, it would be useful to know exactly what paint you used for the repair: was it oil-based or water-based, and was it a primer or a topcoat? If you can show use the can or link to it that would be helpful.

The pink tinge doesn’t resemble the usual tannin stain from timber, which typically shows as a murky brown or yellowish colour that seeps through a topcoat. It would help to know whether you applied paint only to the bare timber areas you sanded back or if you coated the entire window frame, and whether your paint had any coloured guide coat or tint. Some primers go on white and turn pink to indicate where you have primed. Once we have this information, it will be easier to give a clear step-by-step approach to fixing the pink tinge so the frame looks uniform.

Please let me know if you have any questions.

Mitchell

Willy7403

Thanks for your reply. Paint was mainly applied direct to bare timber mainly and blended into adjacent area only. No primer used just top coat per images.

oil based enamel topcoat. Thanks.

MitchellMc

It's that blending that is confusing me, @Willy7403. I'm not sure why it, too, would have turned pink. As that's an oil-based paint, it also won't upset and draw out tannins, unlike a water-based paint would do. Oil-based paints are actually used to block tannins.

Is there any chance of contamination of your brush? Perhaps an oil-based reddish colour you've used before, that this product could be breaking down and drawing out of the brush?

I've spoken to Taubmans, and we can't pinpoint exactly what's causing this issue, and it's most likely due to an external factor. I'd double-check the colour of the paint in the pot, switch to a new brush, and then coat the surface again.

Mitchell

Willy7403

Thanks very much.

I’ll try that and report back in a few days.

Fingers crossed 🙏🏻

Willy7403

Hi, Used new brush and applied paint after sanding and lengthy stir. Appeared to blend in after 1 hour or so (1st image) then darker shade when dried. Paint color cotton ball white 7 years old. Suggestions welcome - use primer, cover with wood or spakfilla , buy fresh paint? Thanks

MitchellMc

Hi @Willy7403,

Where exactly did you repaint? I notice all the pinkish-hued areas from your first image in this discussion are now gone, but you have a darkened area around the architrave. Did you paint over the whole windowsill?

I didn't notice in your paint pot images that this is a seven-year-old paint. Given its age, I'd say that could be the reason for unusual results. I'd recommend picking up some new paint.

You could potentially use a stain-blocking primer, but I'm not particularly convinced this is a staining issue. Your current issue looks far more like a stain bleeding through than your first images, but my money would be on the paint being the issue. A stain-blocking primer wouldn't hurt, though.

Mitchell

Willy7403

Hi,

the darkened area in the image is the only area that I painted as a test not whole windowsill. I will get new paint and try that. Stain blocker after that if not successful.

thanks gain.

MitchellMc

Can I ask what happened to all the pink area we were previously discussing, if you only repainted the darkened area in the current image, @Willy7403? Those details might help me better understand what's going on here.

Willy7403

Yes that’s a different window. My test was on another window.

Child Item