The method of drilling a hole in concrete is easy and handy. You can hang racks, hang paintings, install lights on the wall and do that much more rapidly and securely. The procedure itself is basic, but choosing the right tool and understanding how to use them can save you an enormous amount of time.
but drilling into a concrete wall with an ordinary drill can be very frustrating and the outcomes would be very untidy and disappointing. If you need to drill into a concrete wall, you have to use a hammer drill.
What You’ll Need When Drilling
- Hammer drill
- Some Masking tape
- Tungsten carbide masonry bits
- Large masonry nail
- A Hammer
Things You Need to Know Before You Start
You’ve to purchase or rent a good hammer drill if you don’t have one. Obviously, you shouldn’t try to drill with an ordinary one.
Drilling in concrete is much easier if you use a hammer drill or a rotary hammer for large jobs. These tools crack the concrete through fast hammering, then drill to scoop out the broken materials. An ordinary drill will make the work much slower and more difficult.
Since concrete can’t be easily shaved away in layers the same way wood and metal can be. You can check our Makita xph102 vs xph012 hammer drill review if you are planning to buy a hammer drill.
It’s obviously worth it to pay a little more for a more powerful hammer (at least 7 to 10 amps) made by a well-known brand. Other valuable features may include a double speed setting, comfortable grip, depth stop and a second handle for your other hand.
Become more familiar with your tool. You should read the user’s manual and learn what the knobs and controls are used for. Ensure you are comfortable with your tool before moving onward to the next step.
You have to follow all the safety instructions. You should wear safety goggles to keep your eyes safe from particles of concrete, use hearing protection, and good gloves to protect your hands from abrasion and hot drill bits. A respirator is also suggested for longer projects that will create a lot of dust.
How To Drill in Concrete: Step by Step
1. At first mark the position of the holes. Obviously, the accurate marking of the holes is always important. Make sure that all the marks are at a level or exactly where they are supposed to be.
2. Then insert a high-quality masonry drill bit in the drill. A carbide-tipped masonry bit(or labeled as “rotary/percussive”) is intended for hammer drills.
They are designed to withstand the force of hammering and drilling dense concrete. The flutes of the drill bit must be at least as long as the hole you are planning to drill. Since they are essential for directing dust out of the concrete hole.
Rotary hammers require special drill bits. Those are called SDS or SDS-MAX (for holes up 5/8 inch in diameter) or Spline-Shank (for holes 3/4 inch or larger).
It is usually much more difficult to drill reinforced concrete if you need to drill deeper than the steel rebar. You have to switch to a special rebar-cutting bit once the hammer drill hits metal. Also, you’ve to slow down and hold for a few seconds occasionally to prevent overheating.
3. Set the depth now. Some drills available in the market have a depth setting or depth control bar. Read the user manual and figure out how to use it. If your drill does not have depth control then measure and mark the required depth you want on the drill bit with a pencil or masking tape.
Because concrete is a hard, dense material. Screws embedded 1 inch deep are enough for hanging lightweight objects. To hang heavy weight products you will need longer screws or concrete anchors. Which should be listed as the minimum embedment on the package.
Add an extra half inch to the embedment to allow some space for the dust that accumulates during drilling. You can decrease this length if you plan to remove the dust later.
For empty concrete blocks or thin concrete surfaces, you’ve to check the fastener specifications. Some plastic anchors need a strong backing and will fall out if you drill through the opposite side.
4. Hold your hammer drill appropriately. Hold the drill with one hand like a pistol, with your forefinger finger on the “drill trigger”. If the drill has an extra handle for your other hand to hold, use it too. Else put your other hand at the back of the drill.
It is very important when drilling into concrete that you have full control of the hammer drill. You must hold the drill by the handle and present it to the concrete perfectly horizontally. You don’t have to use much pressure, but you do need to keep proper control of the hammer drill. The hammer action makes the drill behave a little differently than a normal drill. But it is not difficult to use.