How to Find Studs Behind Drywall Using 3 Easy Methods

Finding studs behind drywall or sheetrock is an important step before hanging a TV, installing a wall mount, putting up shelves, or mounting a large picture. In this guide, we cover three simple ways to locate wall studs: using a magnetic stud finder, using an electronic stud finder, and using the classic knock-on-the-wall method. Each method has its own advantages, and the best choice depends on your tools, budget, and comfort level.

Why Finding Wall Studs Matters

Before you drill into drywall, it is important to know what is behind the wall. Drywall alone is not strong enough to hold heavy objects. If you are hanging a large picture, a heavy mirror, a shelf, or a big screen TV, you need to anchor into a wall stud for better support.

Wall studs are the vertical framing members behind drywall. They are usually made from wood or metal and provide the structural support needed for secure mounting. Finding the stud location before drilling helps prevent loose mounts, damaged drywall, and failed installations.

Method 1: Use a Magnetic Stud Finder

One of the easiest ways to find a stud behind drywall is to use a magnetic stud finder. In the video, the example used is the Stud Buddy. This type of tool is simple, affordable, and does not require batteries.

The concept is straightforward. Slide the magnetic stud finder across the wall until it sticks. When it sticks to the wall, it has likely found the head of a drywall screw or nail. Since drywall screws and nails are usually fastened into studs, this gives you a strong indication of where the stud is located.

• Affordable, usually around $10
• No batteries required
• Simple to use
• Can hang on the wall to mark the stud location
• Great for quick stud location checks

Another nice benefit is that you can leave the magnetic finder stuck to the wall above or below the location where you plan to drill. This can eliminate the need to mark the wall with pencil or tape.

Method 2: Use an Electronic Stud Finder

The second method is to use an electronic stud finder. In the video, the Zircon MultiScanner stud finder is shown. Electronic stud finders can detect more than a basic magnetic tool. Depending on the model, they may locate the edges and center of wood or metal studs. Some models also include deep scan features.

To use an electronic stud finder, place it flat against the wall, turn it on, and move it horizontally across the drywall. Keep the tool pressed against the wall as you move it. When it detects a stud, the device will alert you so you can mark the location with a pencil.

Electronic stud finders vary widely in price. Basic models can cost around $20 to $30, while more advanced models can cost much more. For most DIY jobs, a simple electronic stud finder is usually enough.

The downside to an electronic stud finder is that it is more expensive than a magnetic stud finder and usually requires a battery. However, the upside is that it can provide more detailed information. More expensive models may also help detect plumbing or electrical wiring, but those models are typically much pricier.

Method 3: Use the Knock-on-the-Wall Method

The third method is the old-school knock-on-the-wall method. This method does not require any tools. Simply knock on the drywall and listen for the sound. When the wall sounds hollow, you are likely between studs. When the sound changes to a more solid thud, that may indicate a stud.

This is the cheapest method because it is completely free. However, it is also the least reliable, especially if you are new to DIY projects. It takes practice to hear the difference between a hollow section of wall and a solid stud location.

The knock method can be useful when you are trying to find studs quickly, but for better accuracy, a magnetic stud finder or electronic stud finder is usually the safer choice.

When Should You Find a Stud?

You should locate a wall stud any time you are mounting something heavy or anything that needs a secure hold. Drywall anchors can work for lightweight items, but they are not always the best choice for heavier projects.

• Hanging a big screen TV
• Installing a full motion wall mount bracket
• Mounting heavy shelves
• Hanging a large mirror
• Installing cabinets or storage racks
• Hanging large or heavy framed pictures

When in doubt, find the stud before drilling. It only takes a few extra minutes and can save you from wall damage or a failed mount.

Which Stud Finding Method Is Best?

For most homeowners and DIY users, the best choice is either a magnetic stud finder or a simple electronic stud finder. A magnetic stud finder is inexpensive, easy to use, and does not need batteries. An electronic stud finder costs more, but it can provide additional information, such as stud edges and center position.

The knock method is useful in a pinch, but it is less reliable. If you are mounting something expensive or heavy, use a tool instead of guessing.

Final Thoughts

Finding studs behind drywall does not have to be complicated. A magnetic stud finder is one of the easiest and cheapest options. An electronic stud finder gives you more information and can help locate the center and edges of studs. The knock method is free, but it takes practice and is not always accurate.

Before drilling into drywall or sheetrock, especially when hanging something heavy, take the time to locate the stud. It makes the installation safer, stronger, and much more reliable.