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Question DetailsAsked on 2/12/2017

Ihave water seeping under garage door is there something I could put on this uneven floor to help dam it up??

The Garage floor is almost level and when it rains hard, water seeps under the door. On another Garage we have it has a rubber strip where the door meets the cement that is on the cement??

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2 Answers

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Here are a couple of previous questions about similar issues FYI - the door bottom seal applies only to rain splash or water running off the door, not a case where surface runoff is coming in the door.


http://answers.angieslist.com/I-rubbe...


http://answers.angieslist.com/What-fi...


IF you have water running up against the door, usually a swale or slotted drain in front of the door is the solution, leading off to surface drainage somewhere.In severe cases, like a drive sloping down to the garage, a "speed bump" diagonally across the drive or right at the edge of the garage slab can divert the water before it gets to the door.


For small amounts, if baraly getting into the garage, building a small grout curb or sill under the door works. Put a bit of wood blocking at the edges of the door (like under the bottom stiffer brace, where it will not be in the way of the work following, so the door has a 1/4" or so gap under it when closed. Then tape a strip maybe 3/4-1 inch wide under the rubber door seal strip (which you might have to add if you don't have one - double bulb type works best for this if adding one), roughen the concrete in that strip with a hammer and chisel or bushhammer or such (so the aggregate is exposed), wash clean and get concrete fully wet but mop up any free water on it, lay in a stiff bead of concrete patching grout or pure portland cement mix (slightly damper than bread dough, but shape-holding) along that strip high enough in the middle that the bottom of the door will hit it and push it down when closed on the gap spacers, put double layer saran wrap over it to prevent the door from sticking to it, then close door on it, then gently pull the spacers so the door is resting only on the grout. Let sit closed for 4-6 hours till it is hard - this forms the grout to the bottom of the door seal shape. Then after it is hard peel the saran wrap off and keep the grout damp with very wet towels or rags lying over it for several days (you can close the door on them). Try to avoid driving over it for a day or two if possible. This will form a continuous berm from doorframe to doorframe which will keep small depth of water out of the garage - though if it pools up against the doorframe it may run in under there and will eventually start rotting there. You can wrap the sill grout or caulk around the doorframe and connect to the outside house wall to reduce but no eleiminate this effect.


If your pooling a the door is more than just a thin layer, short of (if overhead car clearance allows for this) installing a substantial grout "speed bump" or a caulked-down piece of treated timber under the door (which will probably require adjusting the auto-reversing/stop limit switch because of the higher stop point) then your solution is to intercept the water outside the garage and keep it from getting there.



Answered 1 year ago by LCD

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Answered 1 year ago by Member Services




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