When reroofing remove all prior roofing materials down to a clean debris free substrate and properly close off all abandoned roof penetrations.
Roof installation interply void tolerance.
Moisture trapped in the void expand.
Figure 2 poor interply bonding due to low application temperature a cap sheet b base sheet.
Roof tiles broken by foot traffic should be.
To install extensive vegetative roof covers on pitches steeper than 2 5 12 12 degrees supplemental measures will be required to prevent sliding instability.
Prime concrete decks prior to application with pg 100 asphalt primer.
Remove debris contaminants aggregate or loose surfacing from the surface of the membrane or flashing to be repaired.
Varied building systems have been developed to support vegetative covers on steeply pitched roofs.
New york city hall used copper for roofing circa 1764 a copper roof was used on the rebuilt old senate chamber in 1819.
Apply over clean dry dust and debris free substrates.
Roof traffic in an effort to avoid the inherent danger associated with walking on a roof we recommend that only licensed and insured professional contractors traverse roofs.
Ensure all products are appropriate for the installation environment and array under the site s loading conditions.
Installation procedures product and safety standards.
The area to be repaired should extend a minimum of 18 inches beyond the perimeter of the defect to provide an ample clean area on which to install the patch and tie it into the existing roof membrane.
Caution should be exercised to ensure personal safety and prevent damage to roof tiles that may void the warranty.
Pierce cautions that before roof repairs are hastily made the source of the ponding water should be investigated.
Pitched roof systems sometimes merge into vertical facade vegetative techniques.
Comply with all applicable local or national building and fire codes including any that may supersede this manual.
Installation but they grow with time.
Roofing membranes for low slope application.
Additional membrane s sheet to complete the roofing system.
During installation of hot bituminous systems care warns that improper mopping can produce voids in the membrane block drains and result in ponding water as well as void the warranty.
