Repainting yellowed white gloss

[Deleted User]

The white gloss doors in my flat are wonderfully yellowed, so I'm planning on repainting them (I didn't do the original paint job) will a couple of coats of Zinsser BIN (all hail Zinsser!) and then a satin white do the job? Or will I have to completely sand back the white gloss, do the Zinsser and then the satin white?

sevenhills

Its a question of how much time/money do you want to spend.

Its always a good idea to sand to a smooth level surface. I live in a house built in the 60s, so there are plenty of rough surfaces to even out. Some people would be happy with a coat of Dulux one-coat gloss.

[Deleted User]

Well the place is my landlord's (I've been given permission to paint) so I'm not too fussed about spending hours making things overly perfect. I just want to make sure that it stays white so I don't have to redo it apart from maybe a touch up here and there should it ever need it. Don't all white glosses turn yellow? Or have they 'fixed' that now?

Warwick_Hunt

Oil based will yellow in time, water based should stay white.

[Deleted User]

Perfect, thank you!
I read that you can't put water based directly over oil based. I'm assuming oil based is what's on there already due to the yellowing, so will the Zinsser then water based on top be okay?

Warwick_Hunt

I wouldn't waste money of zinzzer, sand it undercoat then topcoat.

flashg67

I've painted water based gloss (Wilko own brand) over lightly sanded oil based gloss. Did it several months ago - still white and no peeling etc

Heedtheadvice

As per Warwick and flash.
Water based gloss or satin finish for woodwork gives a much whiter and longer lasting 'whiteness', is easy to apply (do not brush too much), quick to dry and a lot less smelly than gloss based upon volatile solvents.
Downside: finish not as smooth.

I like Crown or Homebase brands but probable any might do you.

It is essential to make sure the existing gloss is clean (no greasy marks etc.) and sanded. You can use an undercoat if you need to cover very yellowed gloss (undercoat cover the colour better).

Maybe just try a top coat or two though as a trial to decide if u/coat is necessary.

In good drying conditions (say dry atmosphere and 20 degrees C) you could do the whole job with a couple of coats in a day if not a big job. Water based paint should not be applied under 10 degrees c but that is unlikely indoors!

You can do the same painting on domestic radiators so very MSE!!

p.s. cover any nail or screw heads if visible or if just under the surface with an oil based paint first to prevent any rusting showing through. Smooth metal paint is ideal for this as also quick drying, if a bit smelly!

Mr.Generous

lack of UV light (sunlight) yellows solvent based gloss. It stays really white outside but yellows horrendously in cupboards.

We usually thin water based with a spot of water to stop it drying too quick and leaving loads of brush marks. Current fave Leyland.

TheCyclingProgrammer

You really don’t need the zinsser.