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bobothewrench

05:31AM | 02/17/04
Member Since: 02/12/04
12 lifetime posts
Bvbasement
I have a problem with the garage floor heaving during the wintertime. The lift in the center is greater than the thickness of the bottom rubber seal on the double-wide garage door. The rubber seal is already the thickest available at the home store, therefor the lift must be roughly 2". The heave forces the garage door to unseal, and cold enters the garage. Some have suggested that what is occurring is that the drain pipe running in the center of the garage is being forced upward, although this is somewhat irrelevant to me since it still remains a foundation problem.

I would appreciate any advice as to how to address this, whether it be for any checks I can perform myself or what type of contractor or specialist to hire to fix the problem. I am very leery of hiring someone not qualified or without the proper equipment to fix this correctly. Thanks.

Glenn Good

03:02AM | 02/18/04
Member Since: 09/10/03
314 lifetime posts
The heave is almost certainly from water freezing under the slab near the door.
Before you hire a contractor to tear up the concrete floor and re-pour it, try this:

To help eliminate the problem make certain all joints in the concrete are well sealed to prevent water from getting under the slab. Use a self-leveling polyurethane caulk to seal the expansion and control joints. This caulk will flow to fill in the joints so be sure the areas to be filled are below the surface of the concrete or the caulking will flow over the concrete surface. This caulking must be contained.


  • If the cracks are deeper than 1/2" you can fill them with sand, or foam backer rod, up to the 1/2" depth to prevent the caulking from flowing underneath the slab where it will be wasted.
  • Make certain the sides of the cracks are clean to insure a good bond.
  • Then apply the caulking over the sand to fill the remaining 1/2". Only the top 1/2” should be sealed with the caulking other wise the caulk will not expand and contract properly with the slab and the bond will separate from the concrete.

Glenn www.consultationdirect.com

devildog

04:02AM | 03/01/04
Member Since: 09/16/02
250 lifetime posts
Hey Bobothewrench,

I know you're looking to solve the problem, but I may have a bandaid solution to get you through the winter. www.autosportcatalog.com has a rubber seal that lays right on the garage floor instead of nailing to the garage door. Or in your case in addition to. The door closes right down on it and compresses it. You drive right over it. I did not get a price sorry. These are probably available elsewhere also.

Good luck,

Devildog


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