Englert S3000 - Manual (Page 10)

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3.2 UNDERLAYMENT INSTALLATION
A. Felt Underlayment: Install felt underlayment on roof sheathing under metal roof panels, unless otherwise recommended
by metal roof panel manufacturer. Apply at locations indicated on Drawings, in shingle fashion to shed water, with
lapped joints of not less than six inches (150 mm). Provide felt underlayment over plywood at all metal wall panel
applications.
B. Self-Adhering Sheet Underlayment: Install self-adhering sheet underlayment, wrinkle free, on roof sheathing under
metal roof panels. Apply primer if required by manufacturer. Comply with temperature restrictions of underlayment
manufacturer for installation; use primer rather than nails for installing underlayment at low temperatures. Apply at
locations indicated below, and as indicated on Drawings, in shingle fashion to shed water, with end laps of not less than
six inches (150 mm) staggered twenty four inches (600 mm) between courses. Overlap side edges not less than 3-1/2
inches (90 mm). Extend underlayment in to gutter trough. Roll laps with roller. Cover underlayment within fourteen days.
1. Roof perimeter for a distance up from eaves of 36 inches beyond interior wall line.
2. Valleys, form lowest point to highest point, for a distance on each side of 36 inches. Overlap ends of sheets not less
than 6 inches (150 mm).
3. Rake edges for a distance of 24 inches.
4. Hips and ridges for a distance on each side of 24 inches.
5. Roof to wall intersections for a distance form wall of 24 inches.
3.3
METAL ROOF PANEL INSTALLATION – GENERAL
A. General: Provide metal roof panels of full length from eave to ridge. No transverse seams allowed. Anchor metal roof
panels and other components of the Work securely in place with provisions for thermal and structural movement.
1. Field cutting of metal roof panels by torch is not permitted.
2. Install panels perpendicular to purlins.
3. Rigidly fasten eave end of metal roof panels and allow ridge end free movement due to thermal expansion and
contraction. Pre-drill panels.
4. Provide metal closure at peaks, rake edges, rake walls, and each side of ridge and hip caps.
5. Flash and seal metal roof panels with weather closures at eaves, rakes, and at perimeter of all openings. Fasten with
self-tapping screws.
6. Locate and space fastenings in uniform vertical and horizontal alignment.
7. Install ridge and hip caps as metal roof panel work proceeds.
8. No end laps shall be allowed.
9. Lap metal flashing over metal roof panels to allow moisture to run over and off the material.
B. Metal Protection: Where dissimilar metals will contact each other or corrosive substrates, protect against galvanic action
by painting contact surfaces with bituminous coating, by applying rubberized-asphalt underlayment to each contact
surface, or by other permanent separation as recommended by metal roof panel manufacturer.
C. Joint Sealers: Install gaskets, joint fillers, and sealants where indicated and where required for weatherproof performance
of metal roof panel assemblies. Provide types of gaskets, fillers, and sealants indicated or, if not indicated, types
recommended by metal roof panel manufacturer.
D. Standing Seam Metal Roof Panels: Fasten metal roof panels to supports with concealed clips at each standing seam joint
at location, spacing, and with fasteners recommended by manufacturer.
1. Install clips to supports with self-tapping fasteners.
2. Seamed Joint: Crimp standing seams with manufacturer-approved motorized seamer tool so clip, metal roof panel,
and machine-applied sealant are completely engaged.