Quote:
Originally posted by Porsche-O-Phile
The "correct" solution (but also very expensive) is to re-grade the front of the garage so it slopes away at a minimum of 1/8" per foot...
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I was going to suggest raising the back of the garage so it slopes down hill

but then though that attaching something across the floor just inside the door was easier.
The Garage Door Threshold looks like the commercial version of my father's remedy.