Updated How to secure electric mast to wooden siding
I do use strut channel and straps Kindof is one brand, uni strut, super strut are others that may be less expensive, I believe I usually use 3/4” steel and cut each piece 18”-20” long or what is needed to span 2 studs then lag into a stud on each side.
at 14’ (quite normal) you will have enough above the roof to justify a guy wire in the direction opposite the pole.
I do this quite often in Oregon as it is common to have a tree limb take out a feeder a little extra protection now may pay off and break the guy wire &amp; splices verses tearing up the roof and mast.
It may be required depending on your wall and foundation heights but thought it should be mentioned.