How To Cut A Doorway In A Concrete Block Wall

Cutting the foundation wall.

How to cut a doorway in a concrete block wall.

Knock the first one out in the centre then use a multipurpose handsaw to cut the mortar and remove the blocks. Removing all the blocks taking outside cutting and re fitting the halves i guess it ll all be tidied up afterwards with plaster etc. Each time the saw makes a full pass up and down the contractor increases the depth of the saw blade so that it eventually cuts through a 10 concrete wall. This lumber should be within 1 8 inch of what the width of the concrete block wall is now when you add the thickness of.

Use a sledge hammer to break through the concrete inside the scribed lines. A huge water cooled cutting saw attaches to each rail and is slowly moved up and down the rails. In the photo above the right side of the right vertical rail has been cut. If your cut doesn t need to be exact use a cold chisel and hand sledge to cut the concrete.

One way is to face the concrete block opening with treated 2 by 10 material. The concrete cutting contractor used a hammer drill to drill and bolt two parallel metal rails to the concrete wall. Cut through the remaining lines until you have created the opening. Step 5 insert the masonry saw blade in one of the holes and cut along the line.

When you get near the edges of the opening you may wish to switch to a masonry chisel and hammer to prevent accidental damage to the surrounding walls. Score the length of the cut three or four times with the chisel. Step 4 re form the blocks as needed.