I am planning to use Reflectix instulation for a detached work room/ garage. The ceiling has fiberclass installution the walls are slumpblock with no instulation. The roll up garage door is instulated with a foam backing. I live in Arizona. I am planning to add an ait conditioning unit when the instulation is complete.
Is the Reflectix as good as the rating says? Can I cut down on 90-96% heat entering the building?