Does anyone have a good solution for draining water from a garage. The problem I have is in the winter when cars have a build up of snow, ice and slush which melts in the warm garage. The resulting melted snow and ice pools up in one corner of the front of the garage and at the garage door. The garage door is new and is wooden with a rubber seal on the bottom. I am concerned that the pooling water will either rot the garage door or the sole plates in the corner where the water pools. There is a basement room under the garage slab so I have some limitations on cutting into the floor to place a drain. I have considered cutting some type of channel in the floor just deep enough to carry the water under the garage door seal. I am concerned that this will just freeze up outside the garage and make an ice dam outside the door. Any thoughts on a solution?
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I sloped the floor of my garage so that it holds several gallons of snow melt under the car. It melts pretty quickly because the garage is radiant-slab heat, but it also evaporates pretty quickly.
There are water sensor that trip an alarm, others that could trip a relay. The device that will skim the shallowest pool of water is a shop vac. There are some sump pumps that will pump down to less than a inch - if you could make a 1 to 1.5 inch sump and bring your little drainage grooves to take. Use the water sensor to turn the sump pump on and off.
Any DWV plumbing downstairs? Could you run a drain line down through the floor to a sink p-trap downstairs? (I'm imagining a lot of very good epoxy would be used.)