109 replies to this topic

[germini30]

I am doing bodywork on my mini. I have done all the prep work and am ready to paint it. I am using cellulose as I live in a built up area and because of the health hazzards pf 2k. I have flatted the 2k that the car was painted with and was wondering if I need to use upol barcoat or will the cellulose be pk over 2k.

[midridge2]

How long ago was it painted in 2k?

[Daz1968]

2k doesn't react with thinner so cellulose will overcoat ok,

[kezzkitkat]

Should be ok best bet would be bar coat it
Its the other way round that u have to watch
2k over 1k

[167ade]

just do a small test piece maybe bootlid could save yourself £25 on a tin of barcoat

[germini30]

Already got a tin of barcoat. I just don't want a reaction.

[kezzkitkat]

Really trying to save 25 pound I would rather spend the most money I can to my budget to get the best results

[kezzkitkat]

U will never know until you try so don't worry and give it ago
All reaction can be resolved

[Daz1968]

You won't need bar coat 2k once cured will be fine

[germini30]

Ok it may even be water based. A test would be to soak some of the car with cellulose thinners and see if the paint softens. I was thinking that due to cellulose containing alot of thinners may lift the paint below

[Shifty]

Bar coat it to be safe, celly can be funny stuff and it doesn't seem to take much to get a reaction.

 

I've been caught a few time and I always barcoat now.

[germini30]

Thanks shifty, apparently bar coat is easy to apply and doesn't need rubbing back so not much effort is needed

[Cooperman]

If you have ever painted with Cellulose and got reticulation, then you will be inclined to use 'Bar Coat'. I wanted to paint a white roof on a car with cellulose and it reticulated so badly that it looked like crazy paving. Had to flat it, Bar Coat it, then re-prime and top coat.

[germini30]

Yes prevention is better than cure

[skoughi]

If you're going to prime it then I would suggest using premium thinner and not standard thinner. I've been using standard thinner in my primer as that's all I can get locally and it's powerful stuff. It'll soften old paint and can cause reactions, as it's been doing with me on random small spots usually where there's a small bit of old paint. I've had to apply in thin coats so there's not much thinners on the car to try and stop it happening but I still get bits here and there . You can nearly strip paint with standard thinners!