How To Drill A 4 Inch Hole In Concrete Wall

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.

How to drill a 4 inch hole in concrete wall.

Then drill a shallow pilot hole using a low speed or short bursts. Do not force the drill. Stop the drill sweep or blow away the accumulated concrete dust and pull out the drill. Once you have the right drill and drill bit mark the spot on the concrete you want to drill through.

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. I need to drill a 4 hole in the foundation of our house to vent a bath fan in the basement. Drill the guide hole to a depth of 1 8 to inch. To drill into concrete use a hammer drill with a carbide tipped masonry bit.

Drill forward with steady light pressure. As much as you will be using the core drill a standard drill is still required in the initial stages to make the guide hole before you can fully switch to a core drill. Blow away dust that accumulated in the guide hole. The wall is made with stay in place forms so the actual concrete forms a kind of waffle pattern which i think is about 4 thick at its thinnest point.

We will discuss the process later in this. Step 4 when you start with a guide hole at least 1 8 inch deep your drill will be easier to control but all the same continue to operate the drill with a steady light but firm touch so you re. When you have to drill large holes into concrete such as the 2 inch or 4 inch holes you will need to use a core drill.