DIY Doctor UK DIY Forums

Hi all,

I've been painting all my dark stained skirting boards white, room by room.

Up until now I've cleaned the skirting, applied knotting solution, then without sanding, applied two coats of Zinsser BIN, then 2 coats of Dulux Quick Dry Satinwood Paint (water based).

The finish was decent with this paint, but I thought it might be better to try an oil based paint with the next room, so I went with Leyland Trade Satin Brilliant White Trim Paint. Unfortunately this seems to be scraping off very easily when I run the hoover up against the side!

My question is, why has this happened and what should I do to correct it? Do I need to scrape / sand the flaky paint off and then reapply BIN and go over it with the Dulux paint?

Thanks for any help / advice you can give.

Hi limersbey,
There is some incompatibility between the zinsser bin which is a shellac product and the solvent in the Leyland paint.
Correcting the flaking will be a matter of trial and error - even if you sand off the flaking areas when you repaint there will be triple+ layers of paint with the remaining leyland paint in the middle.
You could try using an oil based undercoat to stabilise the lower paints, do a small area first to see if it's successful.
Regards S