You can have the best stud finder, but if you donโt use it properly, youโre still making life hard for yourself. Understanding how to use a stud finder can ultimately save you a lot of frustration and money on repairs. Our Pros actually use these tools quite a bit, and we asked them to share their best practices.
A great example of needing to know how to use a stud finder comes when mounting a TV bracket on the wall. You want to ensure that you drill into the studsโnot just the drywall. Actually, this goes for any heavier items you plan to mount on your walls. Unless you enjoy replacing both the drywall and the object youโve mounted to it, let the frame of the house support those heavier items. For success, you need to know how to properly locate stud centers.
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Which Stud Finder Should I Buy?
Youโll have a better idea of how to use a stud finder when you settle on a model. Stud finders come in many shapes, sizes, and technologies. Some magnetic stud finders, like theย StudPop,ย locate studs by identifying metal screws and nails in the wood. These wonโt necessarily help you find the exact center of the stud, however. Magnetic stud finders range from features on traditional density models to novel versions that actually โstickโ to the wall when they find a screw or nail:
Our Pros suggest models that read material density. These help you locate the edges of studs, letting you hone in on the center. Of these, we like Franklin stud finders.
How to Use a Stud Finder to Hang Things
Check Your Batteries and Bases
First things first. As with any tool that operates on a battery, youโll want to ensure you use fresh ones. Weak batteries can give off false readings, and you want accuracy. Also, make sure the contacts on your stud finder donโt have any crud getting in the way of placing them firmly against the wall.
Figure out where you want to hang or secure your item. For the sake of having an exampleย to work with, letโs imagine again that youโre mounting a TV to the wall. Decide where you want the top of the TV to hang. Next, measure down from the top of the TV to the topmost mounting hole of your TV bracket. Mark this as the approximate height to locate and mark your studs.
Find Local Studs in Your Area
Building codes should ensure that the studs in your house are properly spaced from one anotherโtypically 16โณ on center. When looking for the first stud, you essentially have a 2-foot-wide space in which to scan.
Figure out where youโd ideally like to drill. With the flat side of the stud finder pressed firmly against the wall, press the activation button. Then, move your tool to the left about 12 inches.
Slowly move your stud finder back to the right, being careful to keep the stud finder flat against the wall and upright.
With most models, youโll know youโve hit paydirt when your stud finder starts blinking or beeping at you. You want to double-check where the alert started by reversing a few inches and going back over the same spot.
Editorโs Note: You may need to calibrate the stud finderโthough most are self-calibrating. If not, read your ownerโs manual to understand how to do this.
Mark It Down
Grab that pencil and mark where the stud is. If youโre using a center-finding stud finder, mark the edges of the stud so that you can locate the center. Ideally, when you drive your fastener into the stud, you want to aim there.
Double-Check Your Work
You may know how to use a stud finder, but that doesnโt remove the risk of reading a false positive. Metal piping, brackets, and other unforeseen materials in the walls can trick the tool into seeing something thatโs not actually a stud. However, if you have found the right spot, you can tell by searching for studs on either side of your mark. You should be able to find the next 16 inches away from your initial markings.
Now that youโve identified your stud location(s), go ahead and install your mount, bracket, or whatever without any lingering anxiety about whether you hit the right spot!
Editorโs Note: If the goal is to drive a larger anchor into a studโlike a lag screw for a television mount, pre-drill the hole first. This not only helps the anchor work as designed (without splitting the stud), it also confirms the presence of a stud in that location.
Drywall or Plaster? Block or Framing?
Most electronic stud finders only give you accurate readings against drywall. Iโve had some limited success using one to get a general idea of where studs are in plaster, but they arenโt typically designed to penetrate that material. Youโre better off using a magnetic stud finder if you have plaster walls.
You also want to be conscious of whether youโre looking for a stud in an interior or exterior wall. On block homes, exterior walls have furring strips that run vertically. Thatโs the best place to anchor, but it still requires the use of concrete fasteners. You also donโt want to drill in between those strips over the top of an outlet or near a switch. This is where a stud finder with a built-in NCV (non-contact voltage) sensor can help out.
Keep that 16-inch-on-center rule in mind. Once you confirm the position of one stud, measure from there to find others. Then confirm with the tool.
If youโve got any tips or tricks on how to use a stud finder that we may have left out, feel free to add them to the comments below.
