Repairing cracks in a plastic cover

Topic: Repairing cracks in a plastic cover (Read 381 times) previous topic - next topic

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February 11, 2021, 05:39:20 pm

When I removed the Pla-cool cover to repaint it, I found the plastic very brittle and cracking. Since they no longer make these covers and this evaporative cooler still works, I decided to try to save it. I purchased a tube of JB weld plastic epoxy. I decided I might as well do all four corners, so I cleaned and sanded the under side of the corners of the cover, reinforced a few with painters tape on the outer side, then applied the epoxy. This epoxy says it dries in 25 minutes and can be sanded, drilled, painted and sawed. I also used Krylon spray paint to paint the cover to get rid of the dingy yellow color.
I’ll update this once I reinstall it. This epoxy was needed to repair the screw holes to take the mounting screws again.

Re: Repairing cracks in a plastic cover

Reply #1 – February 12, 2021, 10:26:59 am

JB Weld is good stuff. I use it for small surface repairs. You may wish to get acquainted with WEST System epoxy

I no longer do large projects that make efficient use of the gallon size. I carry the G/Flex on all trips.
Whatever it is used to repair will be stronger than the original.

Combined with fiberglass mat, you can fix anything.

Re: Repairing cracks in a plastic cover

Reply #2 – February 23, 2021, 08:06:25 pm

Don,
Thanks for the tip on the West G/flex epoxy. I bought the tube size and used it for two coats on the underside of my Pla-cool roof cover. It's in much better shape now. 😃

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February 11, 2021, 05:39:20 pm

Reply #1 – February 12, 2021, 10:26:59 am

Reply #2 – February 23, 2021, 08:06:25 pm

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