Match the correct anchor size to that of the concrete screw.
How to cut a hole in concrete block wall.
If your cut doesn t need to be exact use a cold chisel and hand sledge to cut the concrete.
Use a carpenter s.
5 line up the blade of a.
Press the tip of the drill bit firmly against the surface of the block and press the drill s trigger.
Release the trigger and remove the drill.
Expand the drill hole to accommodate the anchor.
Chisel out any loose pieces of cinder block around the edges of the hole and brush away any loose debris with a nylon brush.
These holes will mark the boundaries of the opening and help guide your cuts.
Score the length of the cut three or four times with the chisel.
Draw the outline of your opening with a straight edge and a piece of chalk.
If necessary tap in lightly with a hammer.
How to cut a hole in cinder block walls hunker.
A circular saw with a masonry blade can also be used to either score or completely cut through the block.
Remove any concrete dust then press the anchor into the hole until it is flush with the surface.
Obtain a building permit from your local building authority.
The walls at our new place are 6 inch thick concrete it s an old naval base and we needed a few holes for vents.
I ve hammer drilled through concrete to sink anchors but a 4 inch diameter hole is a little intimidating until you have the right tool.
Keep firm pressure on the drill during operation.
Mortar is commonly used to patch concrete and cinder block.
If you do not obtain the necessary permit a building inspector may impose.
Here s a few pictures of the right tool.
Step 2 combine a mortar mix with water in accordance with the mortar instructions.
Drill through each corner of your cutout using a rotary hammer equipped with a masonry bit.