Care must be taken when working around electrical wiring so as not to receive a shock, damage the wiring, or cause a fire. Air sealing materials such as spray foam should never be applied within electrical boxes or come into contact with bare wires. Use of these materials around electrical connections requires special attention. Always follow the product manufacturers' instructions and warnings, and hire an electrician if any electrical work is needed. Radiant ceiling heating panels installed prior to 1995 are advised to be disconnected as per BC Safety Authority's 1993 and 1994 disconnect orders as they are deemed unsafe. Some B.C. homes may still have active knob-andtube wiring. The house must be rewired and the knob-and-tube wiring decommissioned prior to the attic being air sealed and insulated. If in doubt, hire an electrician to review the wiring and perform any necessary work.