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Old 11-19-2020, 05:10 PM   #1595
AFireInside
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Quote:
Originally Posted by Fuzz View Post
If you are attaching plywood across 3 studs, what is the concern? 100lbs is nothing for that kind of support, it should be no problem. 3/4" plywood is plenty strong. 9 standard #8 or #10 wood screws 2 1/4" long (assuming 1/2" drywall) would do it.



That's what I thought as well. I posted a question about it elsewhere and basically had 1 person say it wasn't good enough and another other say it was.


I actually picked up some #10 3-1/8 GRK structural screws and was looking to put three per stud into the plywood, and use the lag bolts that come with the mount on the outside through plywood and hopefully get two screws/washers into the middle stud through the plywood . So maybe I need screws that are slightly bigger, but that's no problem.


I honestly thought that would be overkill, which is fine, so I was surprised when told it wasn't.
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