Beware asbestos - HSE L AIB around boiler, storage heaters and warm air heating systems. M Vinyl floor tiles. N AIB behind fire. Outside. O Asbestos cement gutters and downpipes. P Soffits AIB or asbestos cement .. To find a licensed asbestos contractor visit www.hse.gov.uk/asbestos-licensing. Do not touch the following materials, they should..