Concrete grinding

[TerryH]

Need a few suggestions before I go rent something to grind concrete. My garage/driveway/walkway/storage slab were all poured at different times. They no long mate very well and a few places have a 1/2" step. Nothing big, but enough to stub your toe and at the garage it can trap water against the main door and cause a little leakage under the door.

A. ------_____

B. /\

Most of my problems looks like A. Can a smooth taper be done to eliminate the step. I would assume you start on the lower level and grind until it blends with the raised area.

Anyway, not sure what my options are. Small hand grinder or walk behind? There's a Home Depot near that rents power equipment, I'm thinking they could suggest a few things too. Would appreciate a few suggestions before hand.

[nota]

if you can get water spray grinder
that will keep the dust down
for sure a walk behind
concret is tuff stuff and a hand grinder
will take for ever and put you tooo close to the dust

I do alot of stuff my self
but would at least get a few pro bids
on a job like this
very eazys to screw up and get a wavie mess
and it is a nasty job

[trekkor]

Check with a rental yard.

They will have a concrete grinding tool for you.

Rent that.


Big. Heavy duty. The right tool for the job.
It will have a water fitting for your garden hose.


KT

[Porsche-O-Phile]

Why not just float it?

[nota]

Originally posted by Porsche-O-Phile
Why not just float it?

thin layers of concrete donot last long
nore stick real well

[TerryH]

thanks for the input, guys

Not sure when I'm going to tackle it. We have fairly large vinyl storage shed that needs to be moved first so need a separate slab poured far away from current spot.

[Rot 911]

Originally posted by nota
thin layers of concrete donot last long
nore stick real well

I have good luck with vinyl concrete patch to make a similar transition. Just need to clean and prep the concrete first. Container says can float down to 1/16" which is what I did with no chipping so far.

[Porsche-O-Phile]

Roughen the surface to 1/4" amplitude and float that bad boy. . . That's what we typically call out on some of the commercial jobs we do and we've not had any problems (that I'm aware of) with the float coming unglued. 1/16" is pretty thin - I'd worry about that. If it's 1/2" or so you should be okay. You could probably even polish it up afterwards with no ill effects.

[john70t]

Probably o.k. in nice and warm California, but anywhere else and the cold will pop it off. Interior stains can look quite attractive as well, but use a universal and classic pattern that compliments the exterior style(spend a while thinking).
http://concretenetwork.com/concrete/interiorfloors/

[M.D. Holloway]

One Word: SUPERPAVE!