My sister has ask me install a TV wall mount unit (Sanus F215).
Instructions are pretty straightforward. Problem is where she
That center of the wall location is wallboard only. To support
the weight screws must enter a stud.
Fortunately behind that wall is a utility closet. I'm thinking to
create a block of 2x4's to fill the gap between the studs.
Possibly cap it off with plywood to further insure the screws
coming in didn't merely fill space between the 2x4's. (the wall
bracket screw holes all align vertically)
Might someone offer a better alternative?
That mount handles a 15" to 36" TV. With standard
construction practices studs should be around 16"
apart. Then consider the weight of a TV. A small
one, ie in the lower end of that range is going to be low enough in
weight that toggle bolts in drywall will easily
hold it. A larger one would seem to almost always hit
at least one stud, with two being more common.
So, are you sure there isn't a stud available? How do
you know? And how big is the TV, what is it's weight?
The simplest solution isto move it a bit. You are within 8" of a
Otherwise most run a piece or two of 2x4 horizontally between two
studs. Of course that requires you to rip open the wall board.
You could also span the studs behind the tv with a piece of 3/4"
plywood on top of the wall board. Just cut it about a foot wide and
long enough to span two studs, should be 16" or so. The tv will cover
it unless it's a really small tv. If you paint it the same color as
the wall no one will notice.
Having been in that same situation, I can be confident in saying that
moving it, even 8", is not always an option.
Since I wanted my 42" TV in a specific location on the wall, moving it
so that I hit studs would have placed it in a spot where it would have
been awkward to watch from just about any location. The equipment
cabinet below it would also have to have been moved to a spot that
would have been off center in the open span of wall where I wanted it.
I used huge toggle bolts, but also have the advantage of having walls
that are 3/4" thick. 3/8" of some old fashioned wallboard and then
3/8" of plaster. My mount is a swivel and tilt model and we use the
swivel feature a lot. Even with all the tugging and pushing, the mount
is still solid on the wall.
In a bedroom where I have access to a closet, I used a piece of
plywood inside the closet to support one of those old-fashioned tray
style TV stands for a 19" tube TV. The mount is only about 10" x 4",
so there's a lot of forces applied where it meets the wall. The 3/4"
plywood in the closet with long bolts through the wall and huge
washers/nuts have been handling the weight for a decade or so.
No, you put the piece of plywood in the utility closet, and through-bolt
the sucker. All you need on face side is a thin layer of something so
the edges of the mount don't dig into the drywall. A thin sheet of metal
painted to match the mount works well, or if your sister is fussy,
painted to match the wall. Backer plate in closet needs to go past the
studs on either side of mount footprint, and should be at least 12
inches tall- a thin strip will want to rotate. Screw the plywood to the
studs, through the drywall. And if you ever want to take it out, all
you have to patch are a few holes.
We have several 42" and 50" monitors installed on drywall and steel stud
partition walls this way at work, and none have had any problems yet,
after several years.
I think that will do it. I'll use two squares of plywood however.
The one in the family room serving as a face plate she can cover
as desired. Spanning the studs both front and rear should spread
the loads easily.
Jim, it may be "overkill", but it'll make you feel better if you
do it.... Overkill isn't bad if you have the space, time, and money,
and you obviously have them..... I was going to suggest the
method you suggested, but didn't know how your wife would
greet the "ambiance" of the plywood in the laundry room..
Anyway, as long as you want to go to the extra trouble, it
looks like a good plan to me....
Andy in Eureka, Texas P.E.
PS You might consider putting some sort of small shelf
on the plywood in the laundry room, and using it to
hang up keys, or detergent, or pictures of Elvira.....
..... some sort of practical use that makes it acceptable.....
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