Proper method to attach horizontal board to beam posts in outdoor patio

outdoorpatiotelevision

I want to mount a TV using a basic TV mount. I do not want to mount onto the exterior wall and the back roof truss does not have a joist hanger so I can't use a side-facing TV mounting plate.

The two blue posts bear the load of my roof and are 4×6 (4×5.5). What is the proper method to attach a horizontal board so I can then mount a TV mount to it?

I was thinking of using a 2×10 (so when I mount the TV mount the bolts are at least 2" from the top and bottom edges) and attaching them to the inside-facing faces using joist hangers. I'd likely use 10D nails to connect joist hanger to beams and 10d 1.5" nails where the hanger connects to the horizontal board. Any ideas or thoughts are much appreciated!

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Best Answer

Your 2x10 idea is just fine. I wouldn't use hangers, though. They'll be ugly.

I'd do this:

  1. Cut a 2x10 beam to length, fitting it between the posts.
  2. Mount pairs of slotted bed rail brackets to the back side of the board, flush with the ends, one high and one low.
  3. Set heavy screws as appropriate to engage the slotted brackets.
  4. Paint the board and hang it.

Either that or simply mount it to the outer faces of the posts with nice screws. If you fit it well, that would look fine. It really depends on how deep you want the tv to be.

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