How to Hang Anything from Plaster Walls: A Guide for Homeowners

Congratulations on your new (or new-to-you) old home! Often, when purchasing or renting an older property, the walls don’t get much attention—until it’s time to decorate. Standing there with a hammer and nail, you might wonder how to safely hang things on those plaster walls.

Good news! Hanging items on plaster walls is not only possible but, in some ways, simpler than on drywall. The wood lath behind the plaster is robust enough to support up to 25 lbs if the screw is properly anchored.

Let’s explore the structure of plaster walls and then dive into the best techniques for hanging various items securely.

Understanding Plaster Walls

Plaster walls, commonly used in homes built in the 1800s and early 1900s, consist of three layers: the studs, the lath (wood strips), and the plaster. The plaster is applied over the lath, which is nailed to the studs for stability.

Here’s a glimpse of what’s behind your plaster walls:

• Studs: Vertical wooden beams providing structural support.

• Lath: Horizontal wooden strips nailed to the studs.

• Plaster: The hardened material that forms the wall’s surface.

This structure is what makes hanging objects possible.

Hanging Pictures on Plaster Walls

Knowing the wall structure, you’ll realize there’s plenty of lath to work with—great for hanging decor!

Step 1: Identify the Spot

Choose where you want to hang your picture. If there are cracks, placing the picture over them can be a good distraction. Mark the spot with a pencil.

Step 2: Find the Lath

Drill a small pilot hole. If you hit wood, great! If you hit air, move up or down slightly and try again until you find the lath.

Pro Tip: Plaster can dull drill bits quickly, so keep a separate bit just for plaster walls.

Step 3: Drive the Screw

Use a screw rather than a nail for a secure grip. Attach your picture directly or use a hanger for better stability.

Hanging Light Items

Follow the same steps as for pictures. Always aim for the lath to ensure a secure hold.

Hanging Heavy Objects

Heavy items require more support, typically from studs.

Step 1: Find the Studs

Studs are usually 16” or 24” apart and can be located near windows, doors, and corners. Drill a small hole to locate the stud.

Step 2: Secure the Screw

Once the stud is found, drive the screw into it and secure your heavy item.

Note: Stud finders may not work well on plaster, but you can use a strong magnet to help locate the nails in the studs.

Using Drywall Anchors on Plaster

Drywall anchors are a backup if you can’t hit the lath or stud. Use them sparingly for secondary support, especially for larger pieces.

Hanging from Picture Rails

If your home has picture rails, use them for light items. This method avoids drilling but requires wire hangers.

Fixing Small Holes

Drilled a few extra holes? No worries. Small holes can be covered with paint or a bit of joint compound followed by paint for a seamless finish.

FAQs About Plaster Walls

• Asbestos Concerns: Some plaster walls may contain asbestos, especially if built between 1940-1980. Drilling small holes poses minimal risk, but take precautions like wearing a mask and cleaning up dust.

• Painting on Plaster: Painted plaster walls can be repainted directly. New plaster needs a primer first.

• Replacing Plaster with Drywall: While drywall is easier to work with, replacing plaster is costly and usually unnecessary unless doing a full renovation.

By understanding the nuances of plaster walls, you can confidently hang items without damaging your home. Remember, whether you’re decorating or repairing, patience and the right tools are key!