Use 3 flat head screws to attach the hangboard through the plywood and into those boards.
Mounting a hangboard on a concrete wall.
Traditional mounting requires one to screw holes into the wall and fasten the hangboard in place.
Then use the screws that come with the hangboard for the rest of the holes.
3 put the battoning underneath and drive screws straight in.
Repeat this process until you have put in 6 screws 4 in each corner and 2 in the middle along the top and bottom.
If you re in need of a damage free option there aren t a whole lot of techniques you can implement.
Use the butt of your leatherman or your knuckles or an actual stud finder to tap the wall all across the doorframe horizontally and locate the studs.
Line up the hangboard holes with the 2 4 mini studs.
If you mount it to a piece of plywood the screws would only be holding on to 3 4 technically 23 32 d i would use 1 4 or 3 16 x 2 1 4 or longer tap con screws in each of the mounting holes.
While this offers great security you may not have this option.
Personally i would install the hangboard directly to the concrete.
However some of the more solid options can be used virtually anywhere.
All together now all kinds of wall join in.
Put a wall plug over the end of a 3 screw and bang it into the wall with a hammer and tighten up.
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Your completed hangboard mount should look like this.
We used 5 of them.