3520 PIGEON CREEK RD LIFT STATION 1 2017-03-06

• 3.4 UNDERLAYMENT INSTALLATION A. Felt Underlayment: Apply at locations indicated below, in shingle fashion to shed water, and with lapped joints of not less than 2 inches (50 mm). 1. Apply over entire roof surface. B. . Apply slip sheet over underlayment before installing metal roof panels. C. Install flashings to cover underlayment to comply with requirements specified in Division 07 Section "Sheet Metal Flashing and Trim." 3.5 METAL ROOF PANEL INSTALLATION, GENERAL A. Provide metal roof panels of full length from eave to ridge unless otherwise indicated or restricted by shipping limitations. B. Thermal Movement. Rigidly fasten metal roof panels to structure at one and only one location for each panel. Allow remainder of panel to move freely for thermal expansion and contraction. Predrill panels for fasteners. 1. Point of Fixity: Fasten each panel along a single line of fixing located at ridge. 2. Avoid attaching accessories through roof panels in a manner that will inhibit thermal movement. C. Install metal roof panels as follows: 1. Commence metal roof panel installation and install minimum of 300 sq. ft. (27.8 sq. m.)in presence of factory-authorized representative. 2. Field cutting of metal panels by torch is not permitted. 3. Install panels perpendicular to purlins. 4. Locate and space fastenings in uniform vertical and horizontal alignment. 5. Provide metal closures at rake edges,rake walls and each side of ridge caps. 6. Flash and seal metal roof panels with weather closures at eaves,rakes, and perimeter of all openings. 7. Install ridge caps as metal roof panel work proceeds. 8. End Splices: Locate panel end splices over,but not attached to, structural supports. Stagger panel end splices to avoid a four-panel splice condition. 9. Install metal flashing to allow moisture to run over and off metal roof panels. SEWER LIFT STATION NO.24 REPLACEMENT PROJECT,UP 3313 Division 7 Thermal and Moisture Protection Page 07411-11 April 2012