Thomarse wrote:
A very simple short question for you....

What size drywall screws should I use if Im building a partition wall
with 47 x 75mm timber and 12mm plasterboard?

My guess would be so the screw goes at least halfway into the timber,
so approx 40mm length screws?

any advice, as always much appreciated!


Consider how little force is needed to rip the plasterboard off the
screws entirely, and rethink your assumption that it needs to go halfway
into the timber.

20mm is more than enough.