I AM BUILDING A TWO STORY STEEL FRAMED HOUSE IN BIRMINGHAM, AL. THE WALLS WILL BE BRICK. OSB SHEATING, 7/8 STEEL HAT , 3 5/8 STEEL STUD, 7/8 HAT, 1/2 drywall. I AM USING THE HATS FOR A THERMAL BREAK. I HAVE LOOKED AT USING THE OSB WITH THE FOIL BACK FOR MY SHEATING BUT I AM CONCERENDED ABOUT NEW PRODUCTS. WOULD THE SHEET FOIL BARRIER BE BETTER? IS A VAPOR BARRIER REQUIRED? IF SO WHAT TYPR AND WHERE. ANY PROBLEMS WITH HOUSE WRAPS? I HAVE LOOKED AT USING ROCKWOOL BATTS TO FILL THE 3 5/8 ARES OF THE STUDS.
THANKS
GRAF