Finding a stud in a plaster wall can be a bit trickier than in a drywall wall due to the density and thickness of the plaster. Here's a step-by-step guide to help you locate studs in a plaster wall:



Use a Stud Finder: This is the simplest and most effective method. Modern stud finders are designed to work with various wall materials, including plaster. Follow the instructions provided with your stud finder. Typically, you'll slide it across the wall until it indicates the presence of a stud.
Visual Inspection: Sometimes, you can spot nails or screws in the baseboards or trim. These are often attached to studs. Look for seams where the plaster meets the wall. Studs are usually located near these seams. However, this method may not always be accurate.
Knocking: Tap the wall with your knuckles or a small hammer. A solid, dull sound indicates a stud, while a hollow sound suggests an empty space between studs. Tap lightly and move along the wall until you consistently hear the solid sound.
Probe with a Thin Nail or Drill Bit: Once you think you've found a stud, gently drive a thin nail or drill bit into the wall at a slight angle. If you hit wood, you've likely found a stud. Be cautious not to damage any wiring or plumbing that may be hidden in the wall.
Measure from Corners: Studs are usually placed 16 or 24 inches apart. Measure from the corner of the room and mark those intervals along the wall. Then use a stud finder or other methods to confirm the stud locations.
Look for Outlets and Switches: Studs are typically placed next to electrical outlets and switches. However, this method might not always be reliable, as placement can vary.
Use Magnets: Some stud finders use magnets to detect metal screws or nails in studs. You can also try moving a strong magnet along the wall; it may be attracted to the nails or screws used to attach the plaster to the studs.
Investigate Light Switches: If you have access to the backside of the wall, such as in a closet, you can remove the cover plate of a light switch or electrical outlet. From there, you might be able to see the stud adjacent to the switch box.




Remember to always exercise caution when probing into walls to avoid damaging any wiring, plumbing, or structural elements hidden within.