It was a 3m film, the curtains were just emf fabric sewn in the back of regular curtains and they block the light more. And yes, Wi-Fi and cell still work, we left floor untouched. I can no longer pick up neighbors Wi-Fi in that room. My neighbors are about 150 m away, rural. I turn wifi off at night in my house.
Could you link to the film you used, and also the curtains?
Did this at all block your ability to use your own cellphone?