Still, you must secure the mount to the studs for sufficient holding power. Mounting a modern TV is not as difficult as it used to be. For heavier objects, you need to find the stud. For light objects, you can put up a piece of painter’s tape and drill a hole for a plastic anchor to put a screw in. Mounting into plaster is a little different than drywall because it is brittle, hard, and difficult to find the studs for heavy objects. This was a common way to build walls several decades ago before gypsum board and drywall became much more common. How to mount into plasterĪ plaster wall is made up of horizontal pieces of wood called laths nailed into vertical studs, over which a thick material called plaster is applied. You want to keep the plaster/lathe intact around the hole to prevent the plaster from cracking and falling off or the hole growing bigger than the box/coverplate.This post may contain affiliate links. Small drywall saw by hand will work as well if you don't use too much force. Drilling the corners of the box location will allow you to fit a narrow blade in to cut the lathe with a jig-saw, roto-zip, dremel tool. Again, taking your time will give better results with this stuff. Use a utility knife with a sharp blade to score the plaster carefully until you reach the lathe. To cut the plaster for a box I would put tape on the wall in the area where you want to cut and draw the outline for the hole on it. Dropping a weighted line or fine flexible chain through a small hole will let you know if anything is blocking the space. These are horizontal pieces of wood bracing between the studs that will block you from running wires vertically. Running wires inside the wall is another matter. Take your time and you'll be much happier with the outcome. A little paint on the areas that are visible after mounting the TV and you're done. ![]() A little spackling will patch the bad holes. It should only take a few small holes to narrow down the location and center of the stud if you take time measuring, tapping and scannning. If you don't see wood on the bit when you take it out, move over. Go deeper than the lathe to be sure you are in wood. ![]() Go horizontally with about 1/2-inch spacing. Drill a series of holes with a small diameter bit in the area where you're pretty sure the stud is and where you want to put you anchor screws. Take some time and do all three until you have a good idea where a stud is in your target area (vertically and horizontally). Easiest way I have found to find studs for mounting heavy items is to estimate locations first by looking at existing outlets, tapping, and a deep scanning stud finder. I have a 90 year old house with same walls. Do you think that I could get away with 1 stud? It is after all only 80lbs and cheez has his on hooks not even in studs Last time I attempted to install a outlet box in the wall it was a disaster. My 2nd concern has to do with drilling out the lath so that I can run wires. Any suggestions?įrom what I understand, code at the time was studs are 16 inches apart. ![]() I guess I could use the old guess and check method but I would like a more precise method. The way lath and plaster is constructed it makes it impossible to use a conventional stud finder. My first problem area is finding the studs. Yes, I did a search and just found mentionings of lath and plaster but no concrete information on how to wall mount this beast. I am going to be mounting my new TH-50PH9UK in my bedroom where the walls are lath and plaster construction. I mounted my old(er) TH-50PH9Uk in a new part of the house where the walls are drywall. Originally Posted by ptysell /forum/post/0
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