Air sealing and insulation weatherization work typically does not require the movement or relocation of gas lines or equipment. However, if a smell of gas is detected or gas equipment work is required, proper procedures must be followed by a trained contractor. For example, modifications may be required after a failed combustion safety test on a weatherization project. B.C.-specific information can be found at the BC Safety Authority (www.safetyauthority.ca) as guidance is not provided here.