Concrete Demo without the Tears
Hello Breaktime members,
I want to grind down high spots on concrete and adjacent cinderblock, but in a room that is finished except floating floor and trim. The purpose of the grinding is to prepare for that engineered floating floor. I thought of using a disc grinder but was cautioned by a home remodeling friend that it would trash my new renovation with heavy dust. He said just keeping it wet will not be effective. IS there a power tool and/or method that would not create such a mess with dust, AND will spare me excessive time and physical abuse? The most I need to cut down is 1/2 inch and 6 inches wide (foundation block that extends into the floor space). I can imagine a machine that effectively collects the dust and debris and allows me to cut multiple groves allowing me then to chip pieces off with hammer and chisel.
I'd be temped to just chip it all up with an electric roto-hammer. Make a plywood "shed roof" with sides and a back, about 3' square and 18" high, and move it along with you. Should catch most flying debris, and create chips more than dust. Vacuum it out often.
Get a rotary laser, and outline your high spots with Sharpie first.
What Mcdesign said, alternately you could make a tent with poly and move the tent as you go along. There is also a product out there that is supposed to be pretty handy. Zipwall.
Diamond cut blade in my skilsaw.
I've never used it, but I know Bosch makes a concrete surfacer. Kind of a grinder with a shroud around the grinding part that (I think) hooks up to a vacuum. It might even have a water valve on it to help keep down the dust.
well now, there are several companies that make such equipment specifically for just this task. You might go to rent just such a machine at united rental or you could go for one of the hand held tools from Makita or Bosch There are a host of those products from a company whose catalog is just downstairs. They specialize in just that. Go to Granite City tools They will supply both the grinding cup-blade and tool necessary. If you desire further information then ask me i will get you some phone numbers..
Possibly instead of grinding the high spots, maybe you could fill around them with jif-set. Just a thought.
If you do, be sure to use Leinwebber's latex and mix it almost as thin as water. Screed it off with a 4' or 6' 2x4.
See my work at TedsCarpentry.com
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use a bit like the one above in a roto hammer to take the high spots down a little befow grade and then float it smooth with a floor leveler