![]() ![]() Make sure to see our next video ‘Scanning for Metal’ for more information. This isn’t perfect as you can’t tell the exact edges and centers of the studs but you’ll at least be able to locate the rows of nails attaching the laths to the studs behind the wall. When you scan with a metal scanner you’ll actually be looking for the nails holding the laths to the stud. You can use a tool like the MultiScanner i520 which has a metal mode or a tool designed specifically for locating metal, like the MetalliScanner m40. You’ll use this same technique to smooth on the plaster a little at a time. At the top of your stroke, slide the trowel over 2-3 inches (5-8cm), then reverse the motion and bring it down again. The best way to find a stud through a wood lath and plaster wall, is to actually use a metal finder. Crouch down and push the plaster up the wall in a gentle arc, standing as you go to reach the higher parts. ![]() So why is it hard to find studs behind this? Well stud finders are scanning for changes in thickness and density and all this variation of keys and laths throws off the tool. When it dries the plaster bulges or keys holding the plaster to the lance. Plaster is spread on the surface and pushed through the cracks. With a utility knife, lightly score the pencil contour lines to break the surface of the plaster. This contour will mark exactly where you remove the plaster and lath. This is the back of a lath and plaster wall, you have the studs and attached to the studs are thin horizontal slats, called laths. Using a 3/16-inch masonry bit, drill a hole in the plaster about 2 inches from the crack. Place the front of the old-work electrical box on the wall and center the box over the 12-inch mark. You’ll find them today in older and rural homes. ![]() Today we’re going to cover scanning a lath and plaster wall.īefore drywall became popular many walls were built in the lath and plaster style. Get rid of any stuck chunks of plaster by knocking them free of the lath with a hammer or scraping tool.“Hi this is Eric with the Zircon Tip Minute. Be careful because this will likely result in a messier cleanup. If your wall contains horsehair plaster, it’s likely very old so the wall could crumble easily. You’ll want to take apart the plaster and lath separately for easier cleanup. Make sure not to destroy the lath during this step. Some plaster might stick to the lath, but try to expose as much of the wood framework as possible. Use a shovel to scrape off chunks of plaster. ![]() 6Tips and Warnings on Working With Lath and Plaster. 5Fastening Options for Lath and Plaster Walls. If you’re having trouble listening for studs, you can buy a wall scanner to make your work easier. 4The Different Methods for Anchoring Into Lath and Plaster Walls. Lath and plaster walls are an older style of walling that is created using a combination of thin wooden strips or laths and a wet plaster material. Then, use the hammer to poke holes in the parts of the plaster that aren’t supported by studs. When it comes to hanging curtains on lath and plaster walls, it’s important to understand what you’re dealing with first. If it sounds hollow, you are moving away from a stud. If the tapping sound is solid, then you're approaching a stud. Listen for the wall studs - the vertical wooden beams in the wall - by lightly knocking on the wall with a hammer. ![]()
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