Help! Hanging Plasma TV On Lath And Plaster Wall - Drywall & Plaster - DIY Chatroom Home Improvement Forum

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Old 06-25-2013, 10:14 PM   #1
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Help! Hanging plasma TV on lath and plaster wall

Hi All,

New to the forum. I'm coming here tonight after working for hours to locate studs and mount a ~50lb tv on a wall mount.

The mount (shown here: uses 4 heavy duty wood screws.

I have tried the drilling technique for finding studs with no luck. That is, I took a 1/16 bit and drilled every inch or so, and have not found a stud. With every drilling, there is about 1.5-2" of resistance, indicating to me that they might be horizontal studs.. In other words, there is almost no difference in resistance no matter where I drill.

The wall is adjacent to two staircases, one leading to the basement, and the other to the second floor. My magnet stud finder is able to find screws/nails up and down the points I screwed into.

So, what should I do? Abandon this wall all together? The picture shows about 52lb tied to the mount. It hasn't shifted in any way. When I apply added pressure from hanging on it, it still doesn't move.


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Old 06-25-2013, 11:02 PM   #2
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If it was mine I'd open up that area and add a 2 X 6 backer and at the same time run all my wires behind the wall in to a box like this.


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Old 06-26-2013, 06:04 AM   #3
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It may be that your studs were put in flat rather than on edge. Depending on the thickness of the plaster and lathe, you may not have drilled deep enough to hit a stud (although 2" should have gotten you there). Did debris on the tip of your drill bit show any signs of real wood?

In any event, while 50 lbs is not a lot of weight, you cannot tell that the fasteners are going to hold long term by hanging such weight and then putting extra on it. If I read your post correctly you decided to chance what you have?

You may have to use a wall anchor system if the screws seemed like they did not bite into anything and are just hanging around. And, you do not want an expensive television hanging on screwed bracket with screws in drywall or plaster alone without anchors. With anchors, your bracket should hold the television but why risk it? I have hung very expensive and heavy artwork with on plaster walls with anchored hangers but went for overkill, hangers at multiple points, and tried I to make sure I was in a stud when possible.

Joe's idea is not a bad one. Why not open up the wall, fit a cross brace and box in your connections, then cut some drywall, or trowel on some patching plaster, and seal the wall back up and not have to worry down the road. At least cut yourself a small exploratory hole and use a lighted extension mirror to see what is actually going on in the wall and where the stud is?

Last edited by user1007; 06-26-2013 at 06:14 AM.
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Old 06-26-2013, 06:42 AM   #4
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If there's an electrical receptacle hidden behind the bucket in your pic, remove the cover plate and look inside. The box should be nailed to a stud. Measure 16 inches from it and you hopefully will find the next stud.
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Old 06-26-2013, 06:57 AM   #5
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More likely that the receptacle box is screwed to the baseboard. You might try removing the entire receptacle box from the baseboard and looking inside the hole.
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Old 06-26-2013, 07:46 AM   #6
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Hi All,

Thank you for all of your thoughtful posts. MUCH appreciated!

I am inclined to hire a handyman to add the backer for support, and possibly a new box for wires (because, why not if you're going that far?)

Here are 3 more images that might give you a better idea of what I'm working with: - Is this a stud? This is an exposed piece of wood from the basement side. I drilled those two holes and the wood was pretty soft. I did a test drill on a wood deck that was exposed to water for around 12 hours, and the deck was harder to drill through

EDIT: Would anyone recommend toggle bolts?


Last edited by monkeymonkey35; 06-26-2013 at 08:32 AM.
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