Problems with Dulux Trade white gloss

[Homedec99]

Hi guys
Has anyone experienced problems with Dulux Trade brilliant white gloss ?
I’ve used Dulux for over 30 years, not the cheapest but always gives a good result until ...... recently.
Did the hall, stairs and landing (11 doors !!) and now have patches of paint lifting.
Random places, not areas of ‘high wear’.
As per usual, rubbed down with 120 grit, wiped over with weak Flash solution, wiped with tac cloth, painted (Dulux) undercoat / dried.
Wiped with tac cloth, painted top coat / dried.
Appears to be no problem with undercoat.
First time I think I’ve used the ‘Trade’ versions, wondered if they were ‘cheap and cheerful’ but seems to be all there is available in the major DIY places these days.
Has the change from ICI to AkzoNobel meant a change in formula ???
Pretty hacked off at the prospect of having to rub down and re-paint 11 frigging doors !
Appreciate your views.
Thanks

[OchAye]

Oil based or water based paint?
Is the undercoat adhering well or is the undercoat lifting too?

=====================
I am only guessing ...
- your problem is consistent with applying paint over a glossy unkeyed surface (oil based undercoat has a tendency to be more shiny than not ... but ... )
- contaminated surface because of the tuck cloth ????
- if the undercoat is lifting the "flash" solution should have been rinsed off perhaps
- surfaces not degreased despite washing with flash (see if the paint lifting is consistent with where hands would be touching the doors)
- too many guesses on my part.

I am a DIYer and do not use Dulux products. Others may have a better answer.

[Tom d'Angler]

My usual procedure when glossing is:

Sand
Wipe clean with a cloth with a little white spirit
Undercoat with Dulux Trade Quick Dry Wood Primer Undercoat (it has a flatter finish than their oil-based undercoat)
Wipe clean with a cloth with a little white spirit
Gloss (Dulux Trade oil-based PBW)

I have used this method for a few years on a variety of woodwork and not had any problems like you describe. The Primer Undercoat dries with a flatter finish than their oil-based undercoat, so that must help adhesion. I tried their oil-based undercoat a couple of months ago to see if it had improved but it was so stodgy I only did one door with it and went back to the Primer Undercoat for the rest.

[Desmondo15]

White spirits before a water based primer undercoat, aren't you worried about any oily residue?
Not knocking your method mate just curious.

[Tom d'Angler]

White spirits before a water based primer undercoat, aren't you worried about any oily residue?

Only a smidgen of the spirit. A very small smidgen.

[Desmondo15]

Ahhh... a smidge, hadn't considered that

[OchAye]

Pay attention Tom. Enough people have said Methylated Spirit. It leaves nothing behind, evaporates completely and quickly. It originally caught my attention on this forum for using it before applying silicone. If you use a very little smidgen of white spirit it is either pointless or if it cleans it leaves a residue.

Last time I used white spirit for cleaning was on a set of new (car) brake disks and I knew they were left oily so I ended up washing them using washing up liquid. And no, I did not have brake cleaner back then (I have now).