Re-gloss living room woodwork -choices?

[Tigercubrider]

I have sanded down the skirting, architrave and doors which were painted white gloss
Some is back to bare wood in places

I want to repaint in white gloss

1 should I prime the exposed wood?
2 should I just prime everything ?
3 undercoat the primer?
4 is oil based gloss less likely to yellow compared to water based?
Any recommended brand?

Thanks

 

[oldbutnotdead]

No expert here but I'd definitely prime the bare wood, and to avoid any possible shadows I'd tend to prime the lot.
Then undercoat the lot
Then gloss. Only water-based gloss I ever used went on really easily & looked nice for a year, then it didn't yellow but just started looking cheap and shabby. The other rooms (which I did in oilbased gloss) looked lovely for about 15 years. Weirdly, yellowing is a function of how much daylight the paintwork gets- the more light, the less it yellows. (NB This was obviously a while ago before all the relatively recent changes in paint formulae)

 

[Robbie uk]

Only spot prime the raw timber. Undercoat everything after that. Oil based gloss and satin will yellow within a few months as the chemicals that keep the paint white have been taken out due to European legislation. Water based finishes stay white for a lot longer.

 

[Gerorge Standers]

I'd recommend priming with an oil based primer (e.g. Zinsser Cover Stain) which is compatible with painting over with water based top coat and top-coat with a water based gloss. Unless you can get hold of some old formula oil based topcoat which will not yellow, you're never going to achieve quite that 15+ year durable shiny knock resistant result, but the durability is also affected a lot by the primer used. I can see the difference between skirting boards I primed with Zinsser Bulls-eye 123 (water based) and water based gloss (scruffy after 1 year) and the ones I primed with Cover Stain which has held up far better.