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• <br /> KP Roof Repairs and Rooliprovements Project Section 07600 <br /> Community Transit, ITB#2019-028 Sheet Metal Roofing and Siding <br /> H. When no detail direction is provided in the contract documents for an existing roofing/siding <br /> related condition, the contactor shall bring such transitions to the attention of the owner and <br /> consultant <br /> I. Make proper allowances for expansion and contraction of materials in all work. <br /> J. Do not allow direct contact of non-compatible products. Isolate sheet metal panels and <br /> flashings from contact with dissimilar metals. <br /> 3.02 Metal Roof Panel Installation <br /> A. Metal Roof Panel Installation: Provide continuous metal roof panels of full length from eave to <br /> ridge. Anchor metal panels and other components of the work securely in place, with <br /> provisions for thermal and structural movement. <br /> 1. Install metal panels perpendicular to supports (purlins) unless otherwise indicated, <br /> providing minimum 6"side laps. <br /> 2. Lap panels away from prevailing weather. <br /> 3. Install butyl mastic tape along all roof panel sidelaps. <br /> 4. Space lap screws at 18 inches on center maximum. <br /> 5. Provide metal closure at peaks, perimeter edges, and various flashing transitions. <br /> 6. Locate and space fasteners in uniform vertical and horizontal alignment per the project <br /> uplift requirements. Install screw fasteners with power tools having controlled torque <br /> adjusted to compress washer tightly without damage to washer, screws threads, and <br /> panels. Install screws in pre-drilled holes. <br /> 7. Anchor metal roof panels, and other components of the work, securely in place. <br /> 8. Flash and seal panels, including foam closures (adhered in sealant), at perimeter <br /> openings. <br /> 3.03 Metal Wall Panel Installation <br /> A. Metal Roof Panel Installation: Provide continuous metal wall panels of full length from wall <br /> corner to wall corner, unless otherwise indicated or approved. Anchor metal panels and other <br /> components of the work securely in place, with provisions for thermal and structural <br /> movement. <br /> 1. Install metal panels perpendicular to supports unless otherwise indicated. Provide <br /> minimum 6" sidelaps. Install panels with ribs and stiffeners extending horizontally, similar <br /> to the existing sheet metal panel installation. <br /> 2. Lap panels away from prevailing weather. <br /> 3. Provide metal closure at perimeter wall transitions, and various flashing transitions. <br /> 4. Locate and space fasteners in uniform vertical and horizontal alignment per the project <br /> uplift requirements. Install screw fasteners with power tools having controlled torque <br /> adjusted to compress washer tightly without damage to washer, screws threads, and <br /> panels. Install screws in pre-drilled holes. <br /> 5. Anchor metal wall panels, and other components of the work, securely in place. <br /> 6. Do not field cut metal wall panels by torch. <br /> 7. If approved, stagger panel splices and end laps to avoid a four-panel splice condition. <br /> 8. Flash and seal panels, including foam closures (adhered in sealant), at perimeter <br /> openings. <br /> 3.04 Flashing and Trim <br /> A. Flashing and Trim: Reference Section 07620. Comply with performance requirements and <br /> the manufacturer's installation instructions. Provide concealed fasteners where possible, and <br /> set units true to line and level as indicated. <br /> Construction Documents ,d <br /> 07600-6 �/ <br />