Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-06-2010, 09:08 AM   #1
Member
 
Join Date: Dec 2009
Location: Columbus, OH
Posts: 326
Rewards Points: 0
Share |
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Is this possible? Best Buy told me they wouldn't hang my TV on a plaster wall. How can I do it myself? Thanks!

Jesse

jpearson311 is offline   Reply With Quote
Old 05-06-2010, 09:54 AM   #2
fabrk8r
 
fabrk8r's Avatar
 
Join Date: Feb 2010
Location: Iowa
Posts: 849
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


You can do it yourself by using lag screws to attach the mounting brackets through the plaster and lathe and into the wall studs.

I have never had luck using a stud finder to find studs through plaster and lathe due to the thickness of the plaster plus the 1/4" wood lathe. I find the location of the studs by first measuring from a known stud location. This will get you close. Then drill a small hole through the plaster and lathe and insert a coat hanger which is bent so it will detect the location of the stud. Pull the wire out and use it as a guide on the wall to mark the center of the stud (add 3/4").

You may have to drill the holes in the mounting brackets to a larger size to accommodate the lag screws. I usually use at least 5/16" X 3" lags, but for heavy items like TV mounts I use at least 3/8" X 3-1/2" lags.

__________________
"The physician can bury his mistakes, but the architect can only advise his clients to plant vines." -- Frank Lloyd Wright
fabrk8r is offline   Reply With Quote
Old 05-06-2010, 09:57 AM   #3
Member
 
Join Date: Dec 2009
Location: Columbus, OH
Posts: 326
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Quote:
Originally Posted by fabrk8r View Post
You can do it yourself by using lag screws to attach the mounting brackets through the plaster and lathe and into the wall studs.

I have never had luck using a stud finder to find studs through plaster and lathe due to the thickness of the plaster plus the 1/4" wood lathe. I find the location of the studs by first measuring from a known stud location. This will get you close. Then drill a small hole through the plaster and lathe and insert a coat hanger which is bent so it will detect the location of the stud. Pull the wire out and use it as a guide on the wall to mark the center of the stud (add 3/4").

You may have to drill the holes in the mounting brackets to a larger size to accommodate the lag screws. I usually use at least 5/16" X 3" lags, but for heavy items like TV mounts I use at least 3/8" X 3-1/2" lags.
Thanks for this. What about the component and electrical wires for the tv? I don't want them just running down my wall.

Jesse
jpearson311 is offline   Reply With Quote
Old 05-06-2010, 10:33 AM   #4
fabrk8r
 
fabrk8r's Avatar
 
Join Date: Feb 2010
Location: Iowa
Posts: 849
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Quote:
Originally Posted by jpearson311 View Post
What about the component and electrical wires for the tv? I don't want them just running down my wall.

Jesse
The easy solution is a cord cover. They are not the most attractive option, but it's easy and quick. They are available is numerous sizes and colors and can also be painted to match the wall. They have an adhesive on the back and a snap on cover.

A more eye pleasing alternative would be to cut an opening in the wall behind the TV and install a couple of 2" X 3" boxes, one of which contains the coax and component connections and another for a duplex receptacle for power. This would involve snaking wires and cables through the wall cavity and is fairly easy if there is a basement or crawlspace directly below the space where you are placing the receptacles. The only problem with this scenario is that you won't be able to staple the romex to the stud without tearing out some of the wall and patching it.
__________________
"The physician can bury his mistakes, but the architect can only advise his clients to plant vines." -- Frank Lloyd Wright
fabrk8r is offline   Reply With Quote
Old 05-06-2010, 12:46 PM   #5
Member
 
Join Date: Dec 2009
Location: Columbus, OH
Posts: 326
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Quote:
Originally Posted by fabrk8r View Post
The easy solution is a cord cover. They are not the most attractive option, but it's easy and quick. They are available is numerous sizes and colors and can also be painted to match the wall. They have an adhesive on the back and a snap on cover.

A more eye pleasing alternative would be to cut an opening in the wall behind the TV and install a couple of 2" X 3" boxes, one of which contains the coax and component connections and another for a duplex receptacle for power. This would involve snaking wires and cables through the wall cavity and is fairly easy if there is a basement or crawlspace directly below the space where you are placing the receptacles. The only problem with this scenario is that you won't be able to staple the romex to the stud without tearing out some of the wall and patching it.
Ok, let's say I want to mount my TV on the wall and right underneath my tv is where all my peripherals will be (i.e., cable box, DVD player, stereo receiver, etc). If I have 2"x3" boxes in the wall behind the tv for component and power cables, wouldn't I have to have another component cable box down near the floor so my dvd, receiver, etc. can connect? The 2 boxes would of course be connected to each other inside the wall. See what I'm saying?

Jesse
jpearson311 is offline   Reply With Quote
Old 05-06-2010, 05:36 PM   #6
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Quote:
Originally Posted by jpearson311 View Post
Is this possible? Best Buy told me they wouldn't hang my TV on a plaster wall. How can I do it myself? Thanks!

Jesse
How much does it weigh? A 42" weighs about 70#.
Flat against the wall or at the end of one of these articulated arm things?
Pullout force for hollow wall anchors in plaster is pretty high.
Yoyizit is offline   Reply With Quote
Old 05-06-2010, 10:47 PM   #7
Member
 
Join Date: Dec 2009
Location: Columbus, OH
Posts: 326
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Quote:
Originally Posted by Yoyizit View Post
How much does it weigh? A 42" weighs about 70#.
Flat against the wall or at the end of one of these articulated arm things?
Pullout force for hollow wall anchors in plaster is pretty high.
My TV weighs about 34 lbs. and I want it flat against the wall.

Jesse
jpearson311 is offline   Reply With Quote
Old 05-07-2010, 07:19 AM   #8
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Of course, now I can't find my table of pullout strengths for various fasteners and wall materials.

Here is one link
http://www.oldhouseweb.com/how-to-ad...er-walls.shtml

For four fasteners, all will have a shearing force on them but only the top two will also have some pullout force on them.

34#/2 = 17#.
For a safety factor of 4, the top two fasteners need a min. pullout strength when used in plaster of 4(17) = 68#.
Yoyizit is offline   Reply With Quote
Old 05-07-2010, 07:31 AM   #9
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,199
Rewards Points: 20
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


70# weight
stadry is offline   Reply With Quote
Old 05-07-2010, 07:31 AM   #10
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,199
Rewards Points: 20
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


70# + weight of the mount would be fine for shear AND pullout BUT if you've got this many questions, probably best to find a decent carpenter rather'n watch your very fine tv seek the floor due to improper work,,, you're your own best critic far's ability.

pullout strength of ANY anchor in lath/plaster wouldn't be acceptable to me NOR would i even think of attempting it in ANYTHNG but studs !
stadry is offline   Reply With Quote
Old 05-07-2010, 07:45 AM   #11
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


The other option is to make a wooden plate at least 18" lg and screw it onto the studs [if you can find them through the plaster] then put the mount on the plate where you want it.
But it probably won't be centered.

For the two years I worked as a h/w store clerk almost no one had studs where they wanted them.

We used Hillman hardware and they had tutorials on their website where they talked about low density materials and high density materials, etc., and the fasteners to be used with them, so I made up a bunch of gypnotes about fastening to plaster, drywall & cinder block.
And some fastener packages show ultimate strengths for the different materials they might be used in. You have to scrounge around.
The fastener manuf. for sure can advise on this.

Servalite and Midwest may have fastener tutorials somewhere on their websites.

I found my fastener tutorial file on my back-up computer but it doesn't view correctly. Probably I have to open it in WP51, if I still have that program. It might be saved on a disk somewhere as a text file.
Computers are great when they actually work.

And, test your work.
Fasten the mount and load it to 4x the expected load.
Better it falls on the floor then and not later.

BTW, those gypnotes came in handy when a very serious, blue-eyed young honey questioned me for a half hour on fastener strength. I've never been interrogated like that in my life.
She didn't seem all that impressed, but the next night she was back asking for me. I was off, so somebody else had to deal with this lady. I bet she turned him every way but loose.

Last edited by Yoyizit; 05-07-2010 at 08:04 AM.
Yoyizit is offline   Reply With Quote
Old 05-07-2010, 07:56 AM   #12
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 14,160
Rewards Points: 76
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Only if you can attach to studs or a ledger board behind the lathe. If you want to wake up to a crashing LCD, go ahead and just attach to the Plaster & Lathe.
gregzoll is online now   Reply With Quote
Old 05-07-2010, 08:05 AM   #13
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Quote:
Originally Posted by gregzoll View Post
If you want to wake up to a crashing LCD, go ahead and just attach to the Plaster & Lathe.
http://www.google.com/search?hl=en&s...=&oq=&gs_rfai=
Yoyizit is offline   Reply With Quote
Old 05-07-2010, 08:09 AM   #14
A "Handy Husband"
 
rjniles's Avatar
 
Join Date: Feb 2007
Location: South Carolina Low Country
Posts: 4,040
Rewards Points: 20
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


This is what I did for a buddy to hang is 52" flat screen. This was on drywall but no reason it will not work with plaster / lath. I cut a sheet of 3/4" Birch plywood a couple inches smaller than the TV. Cut 2 opening for electric boxes in the plywood (one for a receptacle and one for the low voltage stuff-used a LV box with a open back). Opened a hole in the wall about 2 feet wide and 1 foot high. Fished a 12-2 cable inside the wall to a receptacle below the TV (lucky here). Installed another LV box down low. Mounted the plywood to the wall with a lot of heavy screws, caught 2 studs. Trimmed out the plywood with 1/4 round molding and painted with a white semi-gloss. I would have used the wall color but he didn't have any. Hung the TV mount with lags into the plywood, installed the receptacle, fished the low voltage wires between the 2 open back boxes. (The open back LV boxes allow any new wiring to be easily installed.) Hung the TV on the mount, one of those ones that pulls out like a scissors jack and tilts side to side.
__________________
Location:
Coastal South Carolina
rjniles is online now   Reply With Quote
Old 05-07-2010, 09:41 AM   #15
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 0
Default

Anyone ever hung an LCD TV on a plaster/lathe wall?


Quote:
Originally Posted by rjniles View Post
that pulls out like a scissors jack and tilts side to side.
That kind puts enormous stress on the wall fasteners on the top of the mount.

That's why the mount is so chunky. It has to resist being torqued off the wall.

You might want to test it with the mount fully extended [worst case].

You have a link to the mount dimensions? This is what I was going to install in Reston, VA on a panelled wall but Panasonic wanted $200 for the mount so the HO opted out. Now they're going to put it on a table.


Last edited by Yoyizit; 05-07-2010 at 09:47 AM.
Yoyizit is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Advice on retaining wall replacement (pics inside) eastie Building & Construction 0 04-05-2010 10:32 AM
Wall - LOAD BEARING: How to Move? user49172 Building & Construction 1 03-11-2009 04:48 PM
Breaking up a long/continuous wall tigereye Interior Decorating 4 03-08-2009 03:43 PM
Atlantic-need your opinion on markd's comments about my vapor barrier? yummy mummy Building & Construction 11 03-07-2007 09:47 AM
Load Bearing Wall? Traybae Building & Construction 1 11-05-2006 01:01 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.