Fire dangers from roof insulation near electrical services

An alarming increase in the number of roof space fires has highlighted a serious hazard in Western Australian homes, prompting an urgent warning from Consumer Protection, FESA and Energy Safety.

Commissioner for Consumer Protection Anne Driscoll said the federal government’s energy-efficiency subsidies have boosted the number of installations and fears some homes may be put at risk: “This increase in demand for roof insulation due to the subsidy may attract inexperienced installers to the industry and there is a danger if the product isn’t installed according to our strict safety guidelines.

“We’re finding, in some cases, the insulation is too close to electric cables, ceiling fans, downlights and their transformers, creating a serious fire danger in homes.

“Although most ceiling insulation is fire resistant to some extent, there’s still a possibility of ignition if the insulation covers these electrical devices in the roof space or is exposed to the heat generated by them.”

FESA reports, on average, at least one roof-space fire every week in WA, raising serious concerns about the problem because fires in roof spaces could go undetected as smoke is above smoke alarms.

There should be at least 50 mm clearance around incandescent lamps or 100 mm if located next to structural timbers and 200 mm clearance around halogen lamps. All installations should comply with the 2007 Wiring Rules. Downlight guards or other physical barriers should also be fitted prior to the insulation being installed.

“I urge all homeowners to use qualified roof insulation installers and licensed electrical contractors and ensure they abide by the safety guidelines for clearance of insulation from electrical devices,” Driscoll added. “There’s no concern if insulation is installed in accordance with these safety standards and all installers and electrical contractors should be aware of, and abide by, this extremely important requirement to ensure maximum safety in the home.”

Blow-in (or loose-fill) insulation, which is usually sprayed with an adhesive solution to prevent movement, can move around the roof space if not secured properly. Blades of an exhaust fan can get jammed, for example, causing it to overheat. Consumers are also urged to buy insulation which has a higher fire-resistant rating.

“It’s vital that householders are aware of this potential hazard in their home and to arrange inspections by licensed electricians if they are concerned,” Driscoll concluded.