Table of Contents(Page DL-2)

Double-Lok® ROOFING SYSTEM

FEATURES AND BENEFITS

1. DESIGN INTEGRITY
   ASBC’s DoubIe-Lok® mechanically seamed system begins and ends in the high, reducing the risk of leakage at the rake that can occur when finishing in the low. The panel seam is sealed with a factory-applied hot-melt mastic, a superior grade to mastics applied in the field.
2. FLOATING ROOF
   The Double-Lok® roof was designed to cope with the forces of expansion and contraction. This is accomplished by allowing the panels to freely move up and down the roof slope.
3. FLOATING CLIPS
   Two floating clips, the Standard and Articulating, are available for the Double-Lok® system. The Standard clip allows for a total of two inches of thermal movement and is constructed from 14 gauge material. The articulating clip eliminates the binding and friction during panel expansion and contraction caused by a misformed, misaligned or improperly erected substructure. The clip provides a 3/8" clearance at the purlin to reduce water ponding on low pitch roofs. Constructed from 12 gauge material, this clip is an integral part of maintaining panel module within the floating system.
4. UL 90 RATING
   The Double-Lok® roof system has 7 different UL 90 construction numbers, each of which is available with several options.
5. FACTORY MUTUAL APPROVAL
   The Double-Lok® roof has been tested by Factory Mutual Research Corporation for wind uplift, fire and hail damage under Standard 4471 achieving various ratings. Refer to page DL-4 for summary information.
6. FIRE RESISTANCE RATINGS
   The roof system qualifies for use in several UL design assemblies and carries a UL "Class A" Fire Rating.
7. SIMPLICITY
   No troublesome batten cap is needed. The panels simply seam together forming a watertight seal.
8. FLEXIBILITY
   ASBC’s DoubIe-Lok® roof system offers welcome flexibility to the erector. Wall covering can be erected before or after the roof is installed. Panel installation is an uninterrupted procedure.
9. EASE OF INSTALLATION
   The erector has the option to sheet each side of the roof separately or both sides simultaneously, which greatly increases the speed and convenience of erection. Being reversible end-for-end, sheets do not have to be special ordered for each side of the building. No field notching of panels at endlaps or ridge is required.
10. FORGIVING SYSTEM
    The Double-Lok® design allows for the roof to be finished in the high when an out-of-square condition or other factors cause the roof to terminate up to 4" out of module.
11. BUILDING LENGTH
    Odd, as well as even, footage buildings can be terminated in a major rib with the use of our 12" or 18" panel or in the low by field bending the panel.
12. PREPUNCHED PANELS AND COMPONENTS
    ASBC’s prepunched system, combined with self-engaging back-up plates, assures panel module and speeds up roof installation.
13. DURABILITY
    Every unpainted panel is manufactured from Galvalume Plus®, your assurance of the ASBC commitment to quality.
14. COLOR AND FINISHES
    Double-Lok® is available in a wide variety of popular colors in three different paint systems.