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[I_want_an_Omega]

Ok, I'm painting some wooden window frames and have justed started on the top coat. I'd undercoated using Dulux undercoat and then started on the top coat after letting the undercoat dry for ample time (actually a couple of weeks as I'd lost interest as you do  ).

All was going well & I'd got to one particular section when after a few mins the paint started to separate from the undercoat & collect in "ripples". All the other areas were fine - but this was a flat/horizontal section - whereas the others were vertial with no probs.

The paint is Dulux satinwood quick dry. It was an unopened can & I suspect that its age may be an issue as I bought it 4 years ago and never used it. I stirred as per the instructions.

It eventually covered as it should, but as it is a quick drying paint the finish was just starting to go off when I'd got the coverage right.

This seems to be a water based paint - at least that's what it says to wash your brush in anyway.

I'll have another look tomorrow when it's properly dry & try a 2nd coat on the affected section.

I've always used Dulux over the last 30+ years and never had a problem before.

Any ideas?

[Olympia5776]

Have your windows been washed in the 4 weeks .....?
It sounds like there is part contamination of the surface of the primer preventing adhesion of the paint .
Photo ?

[tigers_gonads]

Its contamination on the undercoat surface.
Rub the affected bit down with sandpaper then clean it down with some thinners.
Once dry, give it a couple coats of undercoat.
When dry, get the gloss on it asap 

[SIR Philbutt]

Its contamination on the undercoat surface.
Rub the affected bit down with sandpaper then clean it down with some thinners.
Once dry, give it a couple coats of undercoat.
When dry, get the gloss on it asap 

cant add to that 

[I_want_an_Omega]

Most odd.

I've just looked at it and the paint is now virtually dry - it is fast dry stuff. The coverage has worked as I mentioned before and I will sand down tomorrow with some fine and give it a 2nd coat.

The undercoat was exposed to air only in an empty room for about 2 weeks and nothing (except sunlight) has been on it. The weird thing is that the affected area is virtually the whole of a horizontal surface the width of the window and about 4 inch deep. Below it is a much larger surface (actually the base of a window seat) which must be 15 inch deep which is fine. Both sctions were painted @ the same time from the same can ............

I've just had a break to watch Jess Ennis win 

[I_want_an_Omega]

Have your windows been washed in the 4 weeks .....?It sounds like there is part contamination of the surface of the primer preventing adhesion of the paint .
Photo ?

No

[Martian]

Its contamination on the undercoat surface.
Rub the affected bit down with sandpaper then clean it down with some thinners.
Once dry, give it a couple coats of undercoat.
When dry, get the gloss on it asap 

+2 for that answer 

[JWDF]

Hi Robert
if it's water based paint, It may have frozen at some point. 

[paul.lovejoy]

Its contamination on the undercoat surface.
Rub the affected bit down with sandpaper then clean it down with some thinners.
Once dry, give it a couple coats of undercoat.
When dry, get the gloss on it asap 

but make sure its oil based under coat not acrylic water based shite 

[paul.lovejoy]

and have a beer or two thats important

[cem_devecioglu]

agreed with others.. there must be some kind of chemical contamination ..

[Lazydocker]

Not what I was expecting... There was a batch of Dulux recently that yellowed very quickly so could be something more sinister than preparation but sound advice given above

[paul.lovejoy]

its a bit late to take it back its 4 years old mind you some would give it a go

[Field Marshal Dr. Opti]

I believe that Tunnie had a problem with Dulux paint.

If memory serves he received a full refund and a little added compo for the inconvenience.

 

[Field Marshal Dr. Opti]

Most odd.

I've just looked at it and the paint is now virtually dry - it is fast dry stuff. The coverage has worked as I mentioned before and I will sand down tomorrow with some fine and give it a 2nd coat.

The undercoat was exposed to air only in an empty room for about 2 weeks and nothing (except sunlight) has been on it. The weird thing is that the affected area is virtually the whole of a horizontal surface the width of the window and about 4 inch deep. Below it is a much larger surface (actually the base of a window seat) which must be 15 inch deep which is fine. Both sctions were painted @ the same time from the same can ............

I've just had a break to watch Jess Ennis win

More interesting than watching paint dry....