by Roger Sadgrove and Steve Pester (10-Jul-2014)
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This Information Paper will make clients and their consultants aware of some of the issues involved in the installation of PV systems on a traditional asphalt flat roof of an existing building. It reports on the insights gained in carrying out the whole process fromthe planning stage through to commissioning, operation and maintenance.
Installing PV systems on existing roofs
Securing a PV system to an asphalt roof
Load calculations and wind forces
Working at height considerations
Inadvertent shadowingThe need for a comprehensive method statement
Monitoring of post-installation performance
The BRE PV installation project
Assessing the robustness of the roof
Assessing the roof construction
Working at height procedures
References and notes