polycell basecoat issue

[robertg]

hello

I had a room plastered, applied 2 mist coats, but hairline cracks appeared on one of the walls.
I decided to apply a couple of coats of polycell basecoat paint and that has worked fine. Unfortunately, on applying 2 top coats of B&Q matt paint, the whole wall now has tiny spider\crazy paving cracks all over it, almost like the paint has struggled to adhere to the basecoat.

Any advice on this would be much appreciated.

thanks

robertg :roll:

[rosebery]

"almost like the paint has struggled to adhere to the basecoat."

Thats exactly what has happened.

"Any advice on this would be much appreciated."

EITHER line it with 800 grade lining paper then repaint over that

OR paint whole wall with oil/spirit based white undercoat and repaint.

Cheers

[chris_on_tour2002]

and use a decent quality paint. personally i don't use anything other than dulux although johnstones and leyland also make very good paints.

i never touch the chain stores' own paint products, quite simply they are a load of old **** and a complete waste of money. don't think that it's all the same stuff just in a different can. there's a reason why is half the price of the main brands.

and personally i don't find crown paints to be much better, though others do argue.

i agree with rosebery that lining paper is probably the best solution.