My detached garage was rebuilt in 2015, and 2 of the walls have metal braces with kerfs cut into the studs. The walls are sheathed with tongue and groove. The wall in the picture is 2x4’s 24” on center, with one of the studs sistered. Are these braces structural or were they temporary during the rebuild? I’m in the process of insulating my garage and these braces are keep me from touching thoseb2 wallls. I don’t want to place insulation because the braces will compress it, reducing the r-value. Thanks in advance.