Grind Concrete - DIY job?

Question

I installed a storm door and the sweep hits the concrete in front of the door. I raised the sweep but it still scraping the concrete.

Is there a DIY way to grind the concrete? I'm looking to remove less than a quarter inch. The only methods I have been able to find involve renting industrial equipment or paying a contractor. Isn't there some sort of 'sand paper' or 'sanding block' to do this?

New concrete, less than 6 months old

How about modifying the door and putting in a storm door threshold to close the gap? Any pros/cons?

Answer 1

I don't think you will like the finish on the concrete, I think you should modify the storm door.

Answer 2

i would grind, rent a 7 or 7 1/2" grinder and you may have to buy a wheel for it. the grinding wheel is big and looks like a cone. sorry cant think of name. i use it a lot for installing steel doors (replacement) where frames are filled with concrete, first cut with saw then clean opening with the grinder, it is amazing how fast it works and the finish is better than before

Answer 3

Properly done, older cured concrete like yours must be clean of oil, paint, adhesives, ect. Hairline cracks are ok, they add character. Then the surface needs to be etched (with acid) then neutralized, or ground with a concrete grinder, sorta like sanding. Then your ready for stain and sealer. It's really a job for a professional, but if you must, Sherwin-Wms has everything you need to do it. Try a closet of very small room and see how it goes. If it's too much or you don't like, hire a pro or just cover it with carpet or tile.

Answer 4

Depends on how hard the concrete is....if it's the old stuff from before 1950...that stuff is pretty well set and very hard. If it's new and you are only going down a little.....try chipping with hammer in an area...then using belt sander with coarse paper. Wear a dust mask...because if will be bad.