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Question DetailsAsked on 3/28/2015

What is the best fix to a garage door that doesn't sit flush on the floor.

The garage has a linear crack that crowns in the middle. I don't think it gaps more 1/8 inch. This causes gaps on the side of the garage door--probably 1/2 - 1 inch. What is the best fix? Foam injection to level the concrete? Sand down the middle? Add cement to meed the gaps and then cover with epoxy?

Thanks

P.S. See attached picture as answer.

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2 Answers

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Here is a picture of the problem

Answered 4 years ago by n8dogmd

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It's clearly not the garage door that is the problem: the concrete floor has heaved in the middle or settled at the edges causing the crack and the gaps under the door. (One hopes it does not get worse in the future.)


I think it would be very expensive to repair or replace the floor so I would suggest just filling the crack as follows. The rubber sealing strip at the bottom of the door slides into either end of a metal track screwed to the bottom of the garage door. The rubber sealing strip probably has a screw near its edge at each end to keep it from sliding out during normal use --- they must be removed first. Sometimes the track is just crimped at the end to lock the strip in --- the crimp must first be straightened. Remove the rubber strip, then carefully remove the track without bending it. Fashion tapered spacers to exactly fill the gaps from (waterproof) PVC wood substitute (From Home Depot or Lowes). The width if the spacer should be about the same as the thickness of the garage door. Fasten the spacers to the bottom of the door with screws. Then carefully replace the metal track using longer screws where necessary. Slide in the rubber seal and the retaining screws (or crimp the track) at each end to keep it in place. The gaps will now be filled but some caulking might be necessary, depending on how accurately the PVC strips were made.


I just replaced the rubber sealing strips in my garage doors and it was a pretty easy job.

Answered 4 years ago by Bigbird




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