OSB Radiant sheathing & Tyvek housewrap exterior walls
I am looking at building a new house. I am going 2 x 6 exterior walls & blown cellous insulation. I am going to put the OSB radiant sheathing on the roof. My question is should I also put it on the exterior walls with the radiant side on the outside. I am also going to have the house wrapped with Tyvek. The house is going to be brick. I live in Dallas, TX where it gets hot.
Am I wasting my money on doing both and am I going to cause any moisture & vapor problems?
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