We want to hang a 65" 70-lb TV on a SIP wall with an articulated mount. The SIP wall is a sandwich of two 18mm/0.75" OSB outer panels filled with 8" of a "solid" insulating foam (and covered with drywall). There are no studs anywhere near the mount area, and we can't use toggle bolts as they won't expand due to the inner foam (a professional already tried). The Sony (SU-WL855) swivel mount can swing out the entire TV about 6" from the wall. I believe the best solution is to mount a hardwood board on the SIP wall and then fasten the mount to the board, but have questions.
- Is there a better solution? (Or is this even safe to do?)
- If this is best, what panel would be best - I am thinking either 1/4" or 3/8" hardwood, about 2'x3'. Recommended dimensions and thickness/material?
- To mount the wood to the SIP wall, I would think screws would be best, but some people say nails are better with OSB. Screws or nails? And what is the recommended size (obviously about 1.25" long thru mount board, drywall, and OSB, but what screw size or nail size)?
- What have I missed?