I like to drill mine the same size as the minor diameter of the thread. Now, as for the holes to mount the bracket, the key is drilling the holes the right size for the lag bolts. You can now fill in all you exploration holes with some spackle or drywall compound. Once you have located the centers of the studs, then you can use a level to draw a plumb line up to where you want to drill the holes for the lag bolts. You can narrow down exactly where the edges of the studs are with a series of holes. This is typically around 1 1/2 inches of thickness. If there is a stud, it will seem firm, even past the drywall/lathe and plaster. If there is no stud where you drill, the bit will pop all the way in when you drill past the lathe. You can drill a series of small holes to try and locate the firm wood (studs) Typically a 1/8 drill bit works fine. If you do not have a scanner,drop down to an area on the wall that is not as visible. You can find the studs using a stud finder, but it needs to be of the type that can scan through thicker walls such as yours (I have a Zircon Multiscanner i700). Go with your option B, use larger diameter (at least 1/4 or 5/16 hex head lag bolts). I also do this kind of thing all the time and here are a few more suggestions. I'm honestly more concerned about torquing the lag bolts properly so that they're snug but not to the point that I weaken them and possibly fracture them. "Forbidden Instruction: Do not mount onto plasterboard or paneled walls." I'm sure that simply means that you should not install the mount purely using anchors. The main thing that brought this doubt on was something printed in the instructions. It also seems unnecessary given that I can hit two studs and do so very evenly. Plus it's cold out and most of my wood working tools are outside. Option C is obviously the safest bet, but requires the most prep and effort. Cut out a section of drywall and plaster and install a piece of plywood. Install the mount the same way, but use 1" longer lag screws.Ĭ. Just install the mount as it commonly would be with provided hardware, right over the drywall, with four lag screws into two studs.ī. It appears that the TV, conveniently enough, will end up between two studs. TV weighs ~84lbs, while the mount is rated for up to 165lbs. I have a Panasonic TH-50PZ80U coming tomorrow and I have a Monoprice 3900 wall mount. ![]() This means we have wood lathe + plaster, which adds up to almost 1" in thickness, plus the 3/8" thick drywall. The previous owner laminated the walls in the living room with 3/8" drywall/sheetrock. ![]() I've done a lot of searching and haven't found anything that applies to my specific situation. ![]() I believe I'm just paranoid about hanging an expensive TV.
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