Starting a basement finish job and need to relocate the bathroom rough-in approximately 16 feet. Should I jack-hammer the trench or use a conrete saw.
Moon Martin
Use a jackhammer,using a cutting tool only messes up the furnace,waterheater, basically dust all over, also when you use a saw you get a straight line, looks good but when you pour crete in ,it wont hold as good ,with a jackhammer you get rough edges for the new crete to hang on to, after you crete it up,pour a thin layer of jiffset over it to smooth out, sounds dump to have rough edge but i have seen many crete seperating with a straigh edge
Something small like that, we use a crappy circular saw with diamond blade, pail of water, and a shop vac. Then we bust it up with a Brute. Bigger runs we'll use our walk behind saw and garden hose attachment. But our work usually gets lino, tile or carpet over it, and we never see a joint. Never left it bare, so I couldn't say what's better.
I learned a good trick from my plumber a number of years ago. He will use his jackhammer to make a hole large enough for a square edge shovel, excavates under where he wants to go and uses a sledgehammer to break the concrete. Keep excavating where you are heading and you've got yourself a nice trench!! A lot quicker than using a jackhammer for the entire thing and a lot less dusty than cutting.
Wet saw, shop vac and sledgehammer. Preferably, the sledge comes with a young beast attached.
In the past I have usually cut it with a wet diamond saw and jackhammered it. One of the GCs I worked for hired a company that specialized in it. They had all the fancy equipment and dust control and they were reasonable. They could be in and out and were reasonably priced. It's not a fun job to do.
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