Insert new Section 1507.18 to the Building Code to read as follows:

1507.18 Hot-applied rubberized-asphalt roofing. The installation of hot-applied rubberized-asphalt roofing shall comply with the provisions of this section.

1507.18.1 Slope. Hot-applied rubberized-asphalt roof membranes shall not be required to have a minimum design slope (0-percent slope).

1507.18.2 Material standards. Hot-applied rubberized-asphalt roofing shall be one-part hot-applied rubberized asphalt and comply with CAN/CGSB-37.50-M89.

1507.18.3 Protected membrane ballasted low-slope roofs. Protected membrane ballasted roof assemblies with a low-slope (roof slope < 2:12) shall be installed in accordance with this section and Section 1504.4. Stone used as ballast shall comply with ASTM D448.

SOURCE: Final Rulemaking published at 61 DCR 2782 (March 28, 2014 – Part 2).

The District of Columbia Building Code (2013), referred to as the “Building Code,” consists of the 2012 edition of the International Building Code as amended by the District of Columbia Building Code Supplement (2013)(12 DCMR A). The International Building Code is copyrighted by the International Code Council and therefore is not republished here. However, a copy of the text may be obtained at: http://publicecodes.cyberregs.com/icod/ibc/2012/index.htm?bu=IC-P-2012-000001&bu2=IC-P-2012-000019.