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mattreimer

08:25AM | 12/10/02
Member Since: 12/09/02
3 lifetime posts
Bvmisc
I just bought a newly built house 6 months ago. The Garage floor was not floated properly and sinks in the center of the garage about an inch to inch and a half. The garage meets level with the driveway. My builder is being good about working with me to solve the problem but I wanted some advice on what would be the best way to fix the problem. My Builder brought out a concrete guy and he suggested taking out about the first 7 feet of the garage to the driveway. Pour a level floor on top of the remaining garage floor. In the 7 feet that has been taken out repour(with slope) to meet the new slab which has been poured on top of the original slab. Is it good to pour a slab on top of an existing slab? If so what things must you do to make this possible?

[This message has been edited by mattreimer (edited December 11, 2002).]

joed

02:00PM | 12/10/02
Member Since: 09/17/02
524 lifetime posts
If the new slab is at least 4 inches you won't have a concrete problem. You will have a garage door problem as you will now need a special sized door because the opening is now 4 inches short of the standard.

doug seibert

01:29AM | 12/11/02
Member Since: 08/10/02
843 lifetime posts
From your original post:

".....Pour a level floor on top of the remaining driveway "...........

You did mean the remaining Garage Floor..... Didn't you?

Slope to meet the existing driveway......new concrete in the garage only.........no change to the garage door opening............?


mattreimer

03:21AM | 12/11/02
Member Since: 12/09/02
3 lifetime posts
What I meant to say was pouring a new slab inside the garage on top of the existing garage floor(which collects water that leaks under the garage door). So as long as it's more then 4" inches, a slab on top of the old garage slab will be ok? Do you need to tie the new slabs together or can you just pour the new on top of the old? With the garage door, the plan was to create a 3/4" lip on the inside of the garage door so when the garage door was closed the inside wall of the door would be against the lip. I beleive this will be done for two reasons: 1- to keep water out; 2- to not change the size of the opening. Which makes sense to me, because as it is now, water leaks under the garage door and pools in the low spots in the garage floor. My main concern was pouring new concrete on top of old concrete. Thanks for the advise and help. Any further advise or a better Idea on what to do would be greatly appreciated!

joed

07:40AM | 12/11/02
Member Since: 09/17/02
524 lifetime posts
If they are not going to remove the entire floor be sure they instll rebar across the seam where the old floor remains. You will probably get a crack along the edge of the old floor.

mattreimer

09:52AM | 12/11/02
Member Since: 12/09/02
3 lifetime posts
Thanks for the advise! Do you think that there is any existing water damage to worry about concerning the existing garage floor?
I've tried to sweep the water out as soon as possible but I think some might have gotten under the existing slab through a long crack that runs the length of the floor. Is the crack normal, If been told it is.

joed

01:39PM | 12/11/02
Member Since: 09/17/02
524 lifetime posts
Don't think you have an existing problem with the water. I know a guy who had a problem with water pooling in the back corner of his garage. He solved it by drilling thru the slab to allow the water to drain. He never had a problem that I know of.
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