Farraday cages are not important. Unless the EMP is directly over your house, your individual electronics will not malfunction, as long they are disconnected.
EMPs primarily only effect devices with a current running through them at the time of the EMP. As long as everything is turned off, you are ok.
Edit: slightly incorrect. It depends upon distance. Some devices will be damaged even if turned off, but only if they are vlose to where the EMP actually hit. But honestly, screw electronics. I should be able to survive with just what I can do with basic tools.