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Old 03-31-2021, 10:19 PM   #3
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Re: Roof patch causing warp / oil canning

Originally Posted by mongocanfly View Post
Heat will do need planishing and shrinking to keep it tight..
And I wouldnt do a square patch...round patch or radius the corners...
MP&C (Robert) will know for sure
Thanks for the feedback.

Can you elaborate why a square patch would be problematic for this, and how a circle would help?'

I don't have any other tools for planishing, etc. I put a small radius in my previous square patch by rolling it over my rubber hammer to get it close to the crown of the roof. I'm not looking for perfection and expected a minor skim coat of filler, but not the warping I'm seeing..
1972 C20
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