In addition to exposure to acid rain, some roofs become the repository of chemicals that are the by-products of the processes the buildings contain. Of particular concern are food processing, pharmaceutical plants and other sources of organic substances such as animal fats, oils and grease. Whenever the building environment contains chemical agents, the roof system supplier should be consulted regarding compatibility. Sometimes, incompatibility can be resolved through system design. Another environmental consideration concerns rooftop access and traffic patterns.
Some systems are better suited to heavily trafficked surfaces.
In general, it is advisable to limit roof access to those individuals who will participate in ongoing roof maintenance. Proper design can provide suitable protection of those areas that will receive regular traffic for access to rooftop units requiring periodic and routine inspection and maintenance. Aesthetic The appearance of the roofing system is often of concern to schools, hospitals, public buildings and commercial structures. With sheet membrane roofing systems, designers can choose to enhance the appearance of the roof through the use of white, light or colored membranes, or even patterns made from paver systems. Whatever the desired effect, there is a flexible sheet membrane system to provide it.