Hi guys,
I am currently working on repairing a plastic bumper that had a crack in it.
My local PBE store carries SEM flexible primer:
http://www.semproducts.com/flexible-primer-surfacer/
What concerns me is this is a single component primer, it has no activator.
I will be finishing the bumper with a 2K clear coat (********** Universal Clear).
Should I go with the SEM product or look for something else which is 2K instead?
I am worried this will affect the long term durability of the repair.
Thanks!
Flexible primer for plastic bumper repair?
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Fully Engaged
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it should be fine, you should only need to use it where there is bare plastic.
I use a lesonal product called "all plastic prime", its single stage out of a rattle can, you only need a very light coat (its clear) over the bare plastic, let it flash off and its good to go!! krem |
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Joined: Wed Mar 15, 2006 6:49 pm Location: Montreal, Canada |
It sounds like you are describing adhesion promoter. The bumper I am repairing is not raw plastic, it had already been painted with a base coat and clear coat. Perfection is not attainable, but if we chase perfection we can catch excellence.
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I have used the SEM stuff once or twice before without issue, but I would recommend going with a real 2K urethane primer or epoxy.
If you are using all 2K (2 component) products, there is very little change of failure. A regular 2K urethane primer is usually OK for most bumper repairs. If you don't have much sanding to do, epoxy is even better. However, I would recommend using an adhesion promoter over any bare plastic 1st. |
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Joined: Thu Sep 04, 2014 12:16 pm Country: USA |
Any 2k primer will work on a plastic bumper. It does not have to be a flexible primer.
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