Gloss pealing

[w77]

Hi

I didn't prep the woodwork properly last time i glossed the staircase bannister, skirting and ballustrade and then used what was probably a poor quality wilko gloss.

A few years later and it is really yellow and can peal if you rub it

Although I did the same no prep in the bedrooms but used Dulux water based quick dry Gloss and that is still bright white and hard so does not get tacky and come off.

I am though now trying to prepare for repainting the discoloured and pesling surfaces and started by using 80 grit sandpaper then 100 but when do you stop sanding ? my aim was to feather in when the paint stopped peeling with 120 grit but this is difficult as random parts keep pealing.

I have purchasing some Zinneser peel stop to use over it and then was going to use Zinneser aqua based primer before finishing with dulux quick dry gloss as this is also water based.

Any suggestions ? should i be sanding down further or am i doing it right.

Appreciate your help

I have purchased some Zinneser peel stop

 

[Wayners]

For future projects.
There are no shortcuts in decorating.
No one coat paints.
No paints that don't need preparation.
It's all marketing nonsense...
Yeah. It can work but often not...

First test to see if the existing paint is waterbased or oil based.
Rub with meths as that will remove waterbased paint but have no effect on oil gloss.

Then sand with 180 or 120 grit. Clean. Use the correct primer. Waterbased adhesion primer or oil undercoat.
I use loads of waterbased adhesion primer myself but sometimes zinsser BIN if requied.

You need to get the gloss off which is no fun. Get a tungsten scraper and for harder areas use whatever you can to scratch off.
If it was my house id be considering replacing skirting as I can't face the effort.
If you want to try peel stop it could work but the old paint won't stick any better.
I've walked away from jobs like yours.