Long story short, when my new house was built the grade on the garage floor for drainage was way way over done and is the most reduculous slope ive ever seen, So we will be removing (jackhammer) the existing floor and doing a repour. The floor was poured seperately from the foundation but I believe it is joined to it by rebar connecting the two. One of my fears during removal is that the foundation of the house could be damaged/cracked from excessive vibration being translated to the foundation from the demolition. One idea I had was to take a wet saw around the perimeter of the floor to detatch most of the concrete slab from the foundation before the jackhammer/demolish. I imagine you cant get all the way to the edge of the joint but enough to make a difference. Are my concerns warranted or unnecessary?
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Garage Floor Removal - Demolition
- Thread starter theeld
- Start date
theoldwizard1
Well-known member
Sawing is a good idea and I don't foresee any issues. Sawing gives you a nice looking joint.
Wet saws are big and likely will not get all the way into a corner.
Wet saws are big and likely will not get all the way into a corner.
RCStocker
Well-known member
I doubt there is any rebar connecting the foundation to the garage slab. The slab should float. Where the door openings are, frost and freeze can move the floor a little.
How much is the slope? It should slope to the middle then out. If you have 2 doors then it should be lower in the middle of the 2 doors. It can be sloped as much as
2 1/2" Most are. I have changed the stakes a few times and given less slope on request. I have had many table saw with out table in many garages. They are never close to being level. If you live in snow country having a good slope is nice to have. Live with it a while and see if it really as bad as you think. I doubt it is.
Check with your local code to see the pitch required for garage floors. They might have put welded mesh in the garage floor but I doubt they did that either.
Snap your girdle and relax.
How much is the slope? It should slope to the middle then out. If you have 2 doors then it should be lower in the middle of the 2 doors. It can be sloped as much as
2 1/2" Most are. I have changed the stakes a few times and given less slope on request. I have had many table saw with out table in many garages. They are never close to being level. If you live in snow country having a good slope is nice to have. Live with it a while and see if it really as bad as you think. I doubt it is.
Check with your local code to see the pitch required for garage floors. They might have put welded mesh in the garage floor but I doubt they did that either.
Snap your girdle and relax.
As far a slope is concered, Over 11 feet (from wall to drain), the drop is 6.5 - 7 inches, and it is not even uniform at that, close to the drain in the middle of the door, the slope is about 3/4" per foot, like I said, it is way way way over done, trying to find a flat spot to do any work is impossible. I have lived with it for a while and have cussed it every day.
When I met with the guys that did the work to discuss the redo, he mentioned the rebar being connected into the foundation.
When I met with the guys that did the work to discuss the redo, he mentioned the rebar being connected into the foundation.
In my garage, if I sit in my task chair facing the garage door and lift my feet, I roll out of the garage. Any item with wheels must be blocked or it begins to roll. Any floor standing shelf looks ridiculous without a two by four at one end to bring it to some sort of level.
I feel your pain.
I feel your pain.
I jackhammered out my slab and did not notice any real vibration. I had stuff on a shelf in the garage that did not fall off but we did take valuable stuff off the wall adjacent with the house. I didn't have rebar. Not sure why it would be tied in but I guess anything's possible!
Edger
Well-known member
Cut it into blocks, jackhammering is too slow.
dcs Inc
Well-known member
Breaker attachment on a skid steer is real quick. Pop a few holes and put on the bucket and remove huge sections.
dcs Inc
Well-known member
Of course wire mesh slows it down big time. Rebar not as bad.