![Flat roof installation with gas burner. Flat roof sealing. Flat roof installation with gas bottle propane blowtorch during construction with roofing felt. Heating and melting of bitumen tar paper. Roofer works. Roofer Flat roof installation with gas burner. Flat roof sealing. Flat roof installation with gas bottle propane blowtorch during construction with roofing felt. Heating and melting of bitumen tar paper. Roofer works. Roofer](https://www.photocase.com/photos/3320679-flat-roof-installation-with-gas-burner-flat-roof-sealing-flat-roof-installation-with-gas-bottle-propane-blowtorch-during-construction-with-roofing-felt-heating-and-melting-of-bitumen-tar-paper-roofer-works-roofer-working-tool-waterproofing-photocase-stock-photo-large.jpeg)
Flat roof installation with gas burner. Flat roof sealing. Flat roof installation with gas bottle propane blowtorch during construction with roofing felt. Heating and melting of bitumen tar paper. Roofer works. Roofer
![a builder using a gas blowtorch to heat and melt bituminous felt sheet to bond to a flat roof making it waterproof Stock Photo - Alamy a builder using a gas blowtorch to heat and melt bituminous felt sheet to bond to a flat roof making it waterproof Stock Photo - Alamy](https://c8.alamy.com/zooms/9/7e5ebffe699b403e897f6a5a3aa3b7ab/a97tt8.jpg)
a builder using a gas blowtorch to heat and melt bituminous felt sheet to bond to a flat roof making it waterproof Stock Photo - Alamy
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