بهینه سازی در سقف شینگل
Over the past several decades there have been a variety of application equipment, system designs, and product developments aimed at reducing the amount of labor to install roof systems. Trends since the 1990s include the following:
- Wider sheets: Wider single-ply sheets for mechanically attached application are now available. Originally, sheets were approximately 5′ wide. 10′ wide sheets were eventually available, and then 12′ wide sheets. With the wider sheets, fewer rows of membrane fasteners are required and there are fewer time-consuming field seams to fabricate.
- Use of non-bituminous adhesives, such as foam adhesives, in lieu of mechanical fasteners to attach insulation.
- Availability of self-adhering, single-ply membranes: Self-adhering, modified bitumen sheets were available in the 1980s, but several performance problems limited their widespread acceptance. Around the early 2000s, a variety of self-adhering single-ply membranes emerged, along with renewed interest in self-adhering, modified bitumen membranes. In addition to potentially being faster to install, the self-adhering sheets eliminate the need for adhesives and torches (and the environmental, health, and fire concerns associated with some of these other attachment methods).
- Mechanized rooftop application equipment: Although a variety of mechanized application equipment (such as aggregate spreaders, roof cutters and tear-off machines) was in use prior to the 1990s, the weight of the equipment has increased. On larger jobs, it is not uncommon to see ATVs (four-wheelers) being used to transport materials on the roof. Larger, and thus heavier, ballast spreaders are also available. While these heavier pieces of equipment should not be detrimental to buildings with strong roof decks and deck support structures, the heavier equipment can damage older buildings with weak (or deteriorated) decks and/or deck support structures.
It is likely that as the industry moves forward, there will be important changes to products due to environmental, health, energy, or sustainability issues. The introduction of significantly different types of roofing materials is unlikely. The trend towards more sustainable roof design and construction will likely continue.
Electric leak detection will see increasing use. It is a non-destructive leak detection method recommended for all waterproofing membranes but particularly when waterproofing systems are to be covered with over burden, such as soil for vegetative roofing, pavers for a plaza, or an inverted roofing membrane assembly (IRMA). See Integrity Testing for Roofing and Waterproofing Membranes Resource Page.