Femtocells for Radiation proofed homes

Over the weekend, I visited an old colleague who has moved in a new development. I was surprised to get nearly no reception on both my phones which are on different networks. Just outside their house the reception was ok but inside there was none. On inquiring I found out that the developers in some new construction are giving option to people to have their house "Radiation Proofed". This means that they will paint the interior with ssome special paint and put a thin film coating on the windows. So now the occupants of the house are protected by harmful radiation from mobile antennas, other WiFi signals, UV radiation, etc., etc. What people dont tend to realise is that their mobiles will become nearly useless in the house. This will be the case untill Femtocells are rolled out.

My ex-colleague is very interested in the Femtocells now since he has no reception on mobiles in his house but unfortunately he will have to wait for some time.

Google search revealed an article titled Cellphone Signal Blocking via transparent window film (via engadget ... but for some reason the engadget site hangs ... so I have given actual cellular news link) which gives information on someone recently making these films.

Anyone aware of some more of these kinds of films? Any ideas on how much radiation-proofing they can provide? Should we all be having these once Femtocells are here and then just having controlled radiation in our house? I am interested in hearing opinions and suggestions.