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016-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 torches and flame (gas blowpipe torch) to waterproof the roof surface. 24.03.14  © 2014 Didier Ruef