Techshield foil-backed OSB roof decking

[JoeRo]

My wife and I are building a home in Alabama, and I chose to incorporate Techshield foil backed roof decking. The foil is on the surface inside the attic. How will the foil affect attic antenna performance?

[GroundUrMast]

The foil will block most if not all of the RF signals (radio, TV, satellite, etc.) from penetrating the roof deck. That attic will be a very unlikely place to find successful reception.