Does it motive plentifully of blight installing a flat blind tv over a fireplace?
Answers: Drilling fireplace brick can be risky- it may have cracks you can't really see if the fireplace have been used plentifully or is just hoary, and some brick is recycled or flakey to start with. There's other some potential for damage. The safe and sound answer is not to unless you have to. If you must, use a smaller guage drill bit and deeper anchors. Lead is best- it have a bit of give. Screws expand when hot and can crack the brick =O. You can drill the anchor out when you start out (go slow, use a dust mask, and use a metal bit, not a masonry bit to minimize dust creation and bit fouling). Plastic anchors can thaw and drop your set on the floor if the fireplace gets hot ample. A 2.5" deep hole or so is unlikely to thing, as most fireplaces have at smallest two layers of brick, but the diameter does- huge holes are harder to hide. If the brick is painted, it's probably a non-issue; spread the necessary mounting holes, clash the color, and you're done.
Above all- be absolutely sure it isn't simply a facade next to an insulated metal flue behind it. If it is, drilling holes contained by it could cause a fatal fire. The number of holes required will vary by size and type of set, plasma across the world being heavier than lcd and requiring more holes. A swivel mount for any type also requires more holes because of the leverages applied by moving the set away from the wall.
One trick I've seen is finding the front stud surrounded by the fireplace frame (above it), ceiling mounting support eyelets (because holes in gypsum are so effortless to patch) and dropping support wires to a rear-mount bracket on the set. Insure the rings, wires and hardware are rated to support the immensity, with somewhat margin for error basically in satchel. Pads at the contact points are a good model to protect the brick and the set- little sticky backed job will do it. Put the sticky side on the back of the set and you can remove them following with for a while WD-40. Pads also prevent any buzzing that set or frame vibration on brick might bring.
Hopefully this will give you some option.
Depending on the size of the TV 4-8 holes need to be drilled within to the brick Anywhere from 3/8 - 3/4 so plastic grabbers can be placed in the holes consequently bolts screwed into those.
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