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003-Switzerland-Geneva-Worker-Roofing-Roofing-Felt-Blowpipe-Torch-2014.jpg
Switzerland. Geneva. A roofer worker from the company Cerutti Toitures SA is installing roofing felt with heat using a torch and flame (gas blowpipe torch) to waterproof the roof surface. 27.03.14 © Didier Ruef