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-   -   Cutting Concrete Floor (http://www.diychatroom.com/f19/cutting-concrete-floor-54088/)

sdlehman 09-29-2009 06:00 PM

Cutting Concrete Floor
 
Hi. I have a corner shower I want to install in my basement I am finishing. The rough-in is not where I need it to be so I need to break the concrete to lower the 2" PVC about 7". The trench will be only about 20" long.

What is the best way to go about cutting or breaking the concrete? Can I use a circular saw and a concrete blade?

Thanks

Stace

stadry 09-29-2009 06:59 PM

we cut the top 1" w/demo saw & diamond blade then finish w/60# bosch brute elec hammer.

Daniel Holzman 09-29-2009 07:21 PM

Make sure you don't have a post tensioned slab, if you cut one of the cables you are in for more excitement than you ever want to have.

vsheetz 09-29-2009 07:28 PM

I have a local guy I have used - he cuts concrete for a living. He's very good, has all the right tools, and charges reasonable money for medium and small jobs if given flexability of day/time. Not worth me paying tool rentals to do the job myself. You might call around and see what someone would charge.

Dvunger 09-29-2009 07:55 PM

Cutting concrete floor
 
Quote:

Originally Posted by sdlehman (Post 334226)
Hi. I have a corner shower I want to install in my basement I am finishing. The rough-in is not where I need it to be so I need to break the concrete to lower the 2" PVC about 7". The trench will be only about 20" long.

What is the best way to go about cutting or breaking the concrete? Can I use a circular saw and a concrete blade?

Thanks

Stace

A sircular saw might not get deap enoghyou may have to rent a gas 14 inch saw with a diamond blad then mack severall cuts about half inch apart untill you get your desired width the should break out prety eazy with a hamer and chisal

jomama45 09-29-2009 08:11 PM

This is my "weapon" of choice.

http://www.contractorsdirect.com/cor...dbcabea8ff2aa2


You can use a little water (responsibly of course) and have very little dust, zero fumes, & very little work. These can be a little harder to find than a gas equivalent at a rental store, but much safer to use inside. Make sure you understand the safety manual before running any concrete saw.

stadry 09-30-2009 06:29 AM

jo, who's izzat saw, husqie ? we've got 12" bosch but need to have a spare so i'm thinkin' another 12" & keep the bosch for backup,,, btw, we don't saw ALL the way thru for trenching,,, just enough to give us a straight finish'd edge when the conc's replaced,,, we used to be sawing, coring, drilling, & demo contractors in nyc before coming to sweet-home-altanta-georgia,,, ps - gfci plug-ins help made sure we get to go home :thumbup: dislike mixing elec & wtr too often :eek:

jomama45 09-30-2009 07:56 AM

IRC, it's a 14" Partner/Husqy. We always run small amounts of water with them, no problems. The motor is pretty well protected, I've never been shocked. The most important thing is to keep the plug out of the water.

sdlehman 09-30-2009 05:17 PM

Thank you everyone for your quick replies. I got impatient and used a sledge hammer and chisel. It took awhile but got the job done.

Stace


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