Best way to cut small piece of cement


  #1  
Old 01-09-21, 02:25 PM
O
Member
Thread Starter
Join Date: May 2010
Location: U.S.A
Posts: 6
Received 0 Votes on 0 Posts
Best way to cut small piece of cement

I have a piece of cement or concrete that is allowing water to pool in front of window (to the right of the windows in 1st photo below). I need to remove it so that water can drain out. It is about 2" wide and 2" deep, and 3" long. What is best way to remove it? I don't think circular saw will reach deep enough. Sawzall with diamond blade? Drill? Hammer and chisel?



 
  #2  
Old 01-09-21, 02:29 PM
P
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 25,511
Received 962 Votes on 883 Posts
Cheapest is a hammer & chisel and you could pretend to be an ancient Egyptian or cave man, your pick. You could also use a hammer drill to drill a series of holes around the perimeter then chisel out as needed. You could also step up to a rotary hammer with a chisel bit which would make quick work of it.
 
  #3  
Old 01-09-21, 02:38 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 27,329
Received 988 Votes on 899 Posts
Yes, a skilsaw would cut it. You would either need a 7 1/4" abrasive blade for concrete or a 7 1/4" diamond blade. For one cut the abrasive blade will be cheaper. Since its 2" deep you might want to do it in 2 passes. Set the saw 1" deep and make your first cut, then set it 2" deep and make the 2nd cut. Then once you have done that, a hammer and cold chisel will pop that chunk out.
 
  #4  
Old 01-10-21, 01:17 AM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 7,501
Received 531 Votes on 491 Posts
Grinder with 6" dia masonry/diamond blade!
 
  #5  
Old 01-10-21, 04:32 AM
T
Member
Join Date: Jul 2006
Location: Euclid, Oh
Posts: 354
Received 0 Votes on 0 Posts
Oscillating saw with a grout/diamond blade.
 
  #6  
Old 03-27-21, 05:37 PM
O
Member
Thread Starter
Join Date: May 2010
Location: U.S.A
Posts: 6
Received 0 Votes on 0 Posts
I rented a hammer drill, made easy work of removing this hunk of concrete, but now I see that there is a hole under where that concrete was. What would be a recommended way to cap this hold so that it does not fill with water?


 
  #7  
Old 03-27-21, 08:00 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 27,329
Received 988 Votes on 899 Posts
Fill it with mortar............
 
  #8  
Old 03-27-21, 09:32 PM
O
Member
Thread Starter
Join Date: May 2010
Location: U.S.A
Posts: 6
Received 0 Votes on 0 Posts
Thanks XSleeper,
I can't tell how deep it is, could be essentially bottomless (6'). Should I do something to prevent the mortar from just falling into the hole?
 
  #9  
Old 03-27-21, 09:39 PM
O
Member
Thread Starter
Join Date: May 2010
Location: U.S.A
Posts: 6
Received 0 Votes on 0 Posts
Also, recommend any particular mortar (fast set repair mortar in bucket, type S mason mix bag, waterproofing mortar bag, mortar mix bag, glass block mortar mix bag) Looking at what Home Depot has.
 
  #10  
Old 03-28-21, 01:08 AM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 7,501
Received 531 Votes on 491 Posts
Stuff a piece of foam down 6". Regular mortar!
 
  #11  
Old 03-28-21, 05:10 AM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 27,329
Received 988 Votes on 899 Posts
You say you don't want the hole to fill with water. Logic would suggest that unless you fill the ENTIRE hole with something, it could still potentially fill up with water even if you plug the top.. Pour clean silica sand in it if you think it is 6 ft deep. Or poke something down it to find out how deep it really is so that you know..
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: