Building new room INSIDE an existing pole building. The pole building is 30x45 and has house wrap. I will be putting the new room inside that will be approximately 18x26. Building (inside) in the far corner of this existing pole building, I will have the walls against the existing outside pole building with the wrap. Since the other two walls of the shop fall within the pole building (but not against the exterior walls of the pole building) is there any reason to use house wrap there? Thanks!