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Original thread:
Post 35 made on Sunday October 18, 2020 at 09:41
highfigh
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On October 18, 2020 at 07:56, Hi-FiGuy said...
Its been a few years now so what say you all.
Would like to install a 75 on a drop down.
Fireplace is gas insert so not brick and cinder block.
It is true brick not a veneer.
Said I would never do it but here we are.
I am thinking some form of anchor plus adhesive compound on mount to the brick.

Has any one had bricks peel off the walls due to poor craftsmanship of the masonry work?

Lets talk actual failures over time.

Bricks aren't stacked, free-standing- they're attached by using metal strips at intervals, determined by the mason. Because of that, when an insert is used, they have some kind of panel behind and that can be used to drive lags into, or use toggle bolts. If you drill a small hole in a mortar joint with a long masonry bit, you'll likely hit plywood unless they buttered the bricks and stuck them to a cementitious backing, like the kind used for tile. Even then, toggles will work but you also need to look at the forces acting on the bolts- when the mount is collapsed and the TV is close to the wall, they're undergoing shear and if the mount is extended, the TV and mount are trying to pull the top bolts out while the bottom is in compression (acting like a hinge). However, using metal shields and lag bolts is unlikely to push the bricks apart and fracture the joint unless the top row is very close to the top of the bricks. If this is the case, I would use some kind of toggle or bolt it into the backer if that will hold the bolts well enough.

Which mount are you considering?
My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."


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