Omega Owners Forum
Chat Area => General Discussion Area => Topic started by: I_want_an_Omega on 04 August 2012, 18:44:02
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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?
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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 ?
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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 :y
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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 :y
cant add to that :y
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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 :y
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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
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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 :y
+2 for that answer :y
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Hi Robert
if it's water based paint, It may have frozen at some point. :y
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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 :y
but make sure its oil based under coat not acrylic water based shite :y
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and have a beer or two thats important :y
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agreed with others.. there must be some kind of chemical contamination ..
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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 :y
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its a bit late to take it back its 4 years old ;D ;D mind you some would give it a go ::) ::)
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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. :y
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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 :y
More interesting than watching paint dry.... :y
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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 :y
More interesting than watching paint dry.... :y
Indeed yes ;D
Off to have another go now - did about half of one window yesterday so fingers crossed. If I get any more probs then it will be a call to Dulux tomorrow morning. Was bought from B&Q but who keeps receipts that long? It's possible it could have frozen as was in the garage all winter. Fingers crossed - more later.
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Are we talking inside or out ;)
As a decorator of about 30 years experience, I have had this happen numerous times. Its normally contamination, and the usual thing is lots of little seperation craters.
Clean down with white spirit and thoroughly dry off. If it repeats, get a small tin of Primer/Sealer, or a B-I-N sealer (Shelac based....be very careful as it sticks like sh1t to a blanket.)
If doing outside...I personally never use water based paints. Although expensive, I have always used Dulux Weathershield, but they have changed the formula of that , and I don't think its as good as it once was. :(
Oil based paints are imho far better than water based acyllics etc. Water based products allow bleed through of many contaminants, especially nicotine, and yellow much quicker than oil based paints. However, under the right conditions, Acryllics can be a boon for inside undercoating, allowing undercoat and glossing in one day. :y
I would think the most probable cause of your problem, was the delay in top coating.
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Are we talking inside or out ;)
As a decorator of about 30 years experience, I have had this happen numerous times. Its normally contamination, and the usual thing is lots of little seperation craters.
Clean down with white spirit and thoroughly dry off. If it repeats, get a small tin of Primer/Sealer, or a B-I-N sealer (Shelac based....be very careful as it sticks like sh1t to a blanket.)
If doing outside...I personally never use water based paints. Although expensive, I have always used Dulux Weathershield, but they have changed the formula of that , and I don't think its as good as it once was. :(
Oil based paints are imho far better than water based acyllics etc. Water based products allow bleed through of many contaminants, especially nicotine, and yellow much quicker than oil based paints. However, under the right conditions, Acryllics can be a boon for inside undercoating, allowing undercoat and glossing in one day. :y
I would think the most probable cause of your problem, was the delay in top coating.
Terbert so what your really saying is he to bloody slow ;D ;D
agree with everything you say we only use acrylic as a quick undercoat and as a last resort outside just to get a sealer coat/primer on something also found the gloss generally dries like eggshell :y
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Right, sorted :y
I tried a bit more yesterday morning and also on the second window and got the same result :'(. I suppose there was about 10% of one frame/sash done and 5% of the other. All inside BTW.
So, I bought a new can of Dulux oil based Eggshell & this morning set about doing the job again once the other stuff was dry. The job is now finished and looks good - being oil based it won't be dry until tomorrow - which is fine.
Armed with my 3 cans of Dulux paint (undercoat, quick dry satinwood and eggshell) I called Dulux's technical line to try & understand what had happened. They were very helpful explaining the issue was using the quick dry stuff (water based) on top of a solvent based undercoat - they said it was a no no. The reason it worked with the eggshell perfectly was that it is also solvent based and there is no conflict with the undercoat as there was with the water based quick dry satinwood.
So, a lesson learned.