Green Roofing Green roofs offer many advantages for building developers, owners and users. They benefit the wider environment through their positive impact on sustainability, biodiversity and the attenuation of storm water. Green roofs improve the quality of life for the building users whilst providing a payback for the environment and can have wide ranging long term financial benefits.ZinCo Green Roofs from Alumasc are available in four broad application categories, backed up by alternative waterproofing systems to provide a complete roofing solution from a single source.Select System: Zinco Extensive Zinco Biodiverse Zinco Semi Intensive Zinco Intensive