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Modified Bitumen Roofing Specification
Specification: Modified Bitumen Roofing
Technical specification for modified bitumen roofing.
Liquid flashing details can become a part of the roofing warranty; membrane flashing details remain maintenance items. Some details will be specified in roofing, others will be specified in sheet metal flashing and trim. Sheet metal details will be based on SMACNA.
Modified Bitumen Roofing Specifications
Parapet Wall Expansion Joint
Pre-Fabricated Coping (part of warranty)
Parapet Wall Surfaced Mounted
First Metal Edge-Membrane Strip-In
Metal Edge-Liquid Flashing Strip-In
Sheet Metal Pitch Pan
Liquid Flashing Pitch Pan
Lead Flashing Plumbing Vent
Liquid Flashing Plumbing Vent (details included in warranty)
Gutter-Liquid Flashing Strip-In
Drain-Lead Metal Flashing
Drain-Liquid Flashing Drain
Scupper-Liquid Flashing Strip-In (details included in warranty)
Type of Construction
Dead Level (no slope)
Lightweight Insulating Concrete
Select Warranty (2-ply system)
20 year: single reinforced products; 280 mil thick
25 year: dual reinforced products; 340 mil thick
30 year: triple reinforced products; 340 mil thick
Select Warranty (3-ply system)
20 year: 2 single reinforced products, 1 dual reinforced product; 420 mil thick
20 year: 1 single reinforced product, 2 dual reinforced products; 460 mil thick
Sheet Metal Flashing & Trim specification will be included.
Thermoplastic and metal roofing specifications scheduled for completion by December 31, 2016.