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Letter 18080
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Freeman Newton |
I can't help with your paint problem. But perhaps I can explain why PVC pipe is difficult to obtain in varied colours. In Britain it is colour coded, yellow for gas supply, green I think is water etc. It's important to use the correct sort, so the colour is important, hence the lack of choice. Maybe you should reconsider your choice of material.
Ian Brooke
university - Glasgow, Scotland
I have painted 2" PVC pipe with Rust-Oleum (Gold Gloss) and it has worked well. The paint has come off only where it's been scraped up against something hard like when I've dropped it or was carrying it in the house and it scraped up against the bricks. I didn't use any primer or any preparation before painting so in a nut shell YES it can be painted. I'm currently working on a 16" Reflector telescope and making the "tube" out of PVC. I'm lightly sanding the PVC then I will primer it with an automotive primer then I'll let it cure for a week and paint it. The inside will be Flat Black and the outside will be Gloss Black and it will have graphic designs painted on it.
Cheers,
Brian G 
- Clovis, New Mexico
First off, NOTHING ever really sticks to PVC except the glues/cements made to do so. Whatever you get to stick will ALWAYS come off if it's hit against or scraped upon by anything harder than itself, so when you slide the kayak on it, it'll probably scratch off.
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But if you're determined, you could try this: Use a regular PVC Pipe Cleaner, followed by a plastic adhesion helper by the automotive paint co. PPG which comes RTS or "ready to spray". If you want to try a cheaper method, use the Purple Primer available from any hardware or plumbing supply. Then, try to paint it with something with a high amount of solvents (lacquer is good, but I think not durable enough for you...) preferably an automotive urethane type of paint which is harder to scratch off. Going cheap try rust-oleum enamels sprayed on and thinned with Acetone [link is to product info at Rockler] (by about 15%). Also, Krylon now makes a spray can formula for plastics called FUSION. Hope it helps, but like I said, ANYTHING scratches off if it's hit with something harder than itself. Martin C [name deleted for
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Funny i found this site.
I am going to use PVC pipe for table legs believe it or not.
I have the solution to your problem.
I am sanding the PVC, then layering an epoxy on it, then sanding again...then, you paint. the epoxy bonds to the PVC and you don't need to worry about paint sticking to the PVC because it will be coated on the epoxy.
If u want to make it so that your paint wont ever come off...layer another thin epoxy coating over the paint. :-)
Work yes, but your only solution.
Craig D
- Canada
We've been building robots of PVC for many years. The only paint we've found satisfactory for long term use is Krylon Interior/Exterior Spray Paint. This paint works BETTER than their new Fusion Plastic paint and better than Rustoleum's new Plastic paint as well. While Rustoleum general purpose paint is a close second, it remains slightly tacky to the touch for some time. Our only problem is that Krylon discontinued our preferred color -
David J
- Dallas, TX USA
Thank you to everyone for your helpful comments on painting PVC. J.
John C
- Washington, DC
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+++++++ Try Bulldog Tie Coat [link is to product info at Amazon]. It is inexpensive. It is clear and sticks to anything. Then you paint over it. Hope this helps. Jim L
+++++++ I believe the active ingredient in PVC Pipe primer is
MEK / methyl ethyl ketone [link is to product info at Amazon].
Nasty stuff to work with. Wear
protective gloves [link is to product info at Amazon] for
working with chemical solvents. Also a solvent for
fiberglass resin clean up. Gilbert Karwyck
June 7, 2008 MEK is not a primer, it is a chemical used for resins/epoxys to make them react. Brandon Phillips
June 7, 2008 Hi, Brandon. True it's not a primer in the sense of an initial coat of paint; but it is a primer in other senses. As Gilbert notes, MEK is a key ingredient in "purple primer" for socket welding PVC pipe; and he apparently has been successful in using straight MEK as the primer in lieu of the usual mixture of MEK, acetone, and tetrahydrofuran. Regards,
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"MEK is not a primer, it is a chemical used for
resins/epoxys to make them react".
THIS STATEMENT IS NOT TRUE.
MEK or Methyl Ethyl Ketone is a solvent and not a catalyst. However,
MEKP or Methyl Ethyl Ketone Peroxide is a catalyst for polyester
resins and paints.
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MEK IS the active solvent in all PVC glues and will work as a primer for paint when sprayed through a paint gun right before the base coat. The paint used should be a catalyzed polyester resin sprayed through a paint gun. This paint will provide a much better bond to the PVC because it essentially melts the surface of PVC and becomes part of the PVC material itself. Bob Saget
May 2, 2009 Sems etch primer over the pvc, after cleaning, then paint over the primer, it will stay on. Plastic bumpers used to be primed with etch primer before painting, holds up very well. Eleven years in automotive body repair, and painting. Troy Hulbert |
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