Windows, gutters, and wall finishes shall be protected from falling shingles. Coordinate with the homeowner when pushing shingles over doorways and garage doors. Removal of debris shall be completed at the finish of every workday. Use whatever means necessary to remove all nails from the premises. Evaluate the condition of the roof decking. If bad or compromised decking is observed, please contact the Code Enforcement Official at for approval of a change order. Underlayment for asphalt shingles, and mineral-surfaced roll roofing, shall conform to the applicable standards, roofing product requirements, and warranty requirements. If the roof slope is between 2:12 and 4:12, please comply with R905.2.7 if applicable. Prior to covering up the underlayment, take a several of photos to verify proper installation. Use a synthetic roofing underlayment in lieu of roofing felt. Adhere to shingle installation and warranty requirements. Install architectural shingles. Apply in accordance with the manufacturer’s installation instructions. Architectural asphalt shingles shall meet ASTM D7158 or ASTM D3161 depending on where the building the shingles are being installed or is located and what the applicable building code requires for wind resistance. As designated in Table R301.2(1) or required by code or the manufacturer’s installation requirements, an ice barrier shall be installed for asphalt shingles. The ice barrier shall be a self-adhering polymer-modified bitumen sheet product equal to Grace® Ice and Water Shield and shall use a minimum of two rows to ensure that it extends at least 36 inches from the interior wall. Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roofing nails, minimum 12-gage (0.105 inch) shank with a minimum 3/8” diameter head, complying with ASTM F1667, of a length to penetrate through the roofing materials and not less than ¾” into the roof sheathing. Where the roof sheathing is less than ¾” thick, the fasteners shall penetrate through the sheathing. Asphalt shingles shall have the minimum number of fasteners required by the manufacturer, but not less than four fasteners per strip shingle or two fasteners per individual shingle. Base and/or step flashing shall be installed in accordance with the manufacturer’s instructions. Soil stack, vent pipe and chimney flashing, shall be applied in accordance with the asphalt shingle manufacturer's printed instructions. Roof boots shall be Oatey® or equal. A drip edge shall be provided at eaves and rake edges of shingle roofs. Adjacent segments of drip edge shall be overlapped not less than 2 inches. Drip edges shall extend not less than 1/4 inch below the roof sheathing and extend up back onto the roof deck not less than 2 inches. Drip edges shall be mechanically fastened to the roof deck at not more than 12 inches on center with fasteners as specified in Section R905.2.5. Underlayment shall be installed over the drip edge along eaves and under the drip edge along rake edges. If there are any discrepancies between the specifications and the code and manufacturer’s installation instructions, the code and installation instructions shall prevail. All work shall comply with code, manufacturer’s installation and warranty requirements and typical trade standards.
