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Dope clear over latex

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Old 07-03-2007, 12:29 PM
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BAlbertsman
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Default Dope clear over latex

I already have some Brodak clear dope instock, will this work over top of latex paint? I will test it first but wondered if anybody has already done this and how it held up over time?

thanks,
Bernie
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Old 07-03-2007, 02:40 PM
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RCVFR
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Default RE: Dope clear over latex

It will probably work, but be sure the latex paint has totally cured before doping over it.
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Old 07-04-2007, 01:22 PM
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Default RE: Dope clear over latex

I would use varathane mineral base poly. If the paint is white it may discolor it a bit if used too heavily.
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Old 07-04-2007, 02:29 PM
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Default RE: Dope clear over latex

No, it will eventially buckle the underlayment.

If you have something inert to provide a clear barrier, that needs to be applied first. Then go ahead.

Wm.
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Old 07-04-2007, 02:40 PM
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Default RE: Dope clear over latex

I hope your referring to dope; I can see several planes, some several years old from where I sit with varathane over latex on koverall with absolutely no buckling.
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Old 07-04-2007, 03:55 PM
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Default RE: Dope clear over latex

Oil base polyurethanes will yellow over time. Water base polyurethanes are fuel resistant and will not yellow nearly as much. I used the water based Diamond Varethane Outdoor Spar Urethane over my latex painted TF Spitfire, and am quite happy with the results. I used rattle can poly and it gives a slight orange peel texture. Next time I'll use an airgun or airbrush for a smoother finish. Be sure to let the latex fully dry 1-2 weeks. As for dope over latex, I cannot answer.
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