Construction : Charlemagne Roof Replacement Project

2026-11-03

3 . 04 INSTALLATION OF SELF - ADHERING VAPOR RETARDER / AIR BARRIER / TEMPORARY ROOFING A . Install primer as required by membrane manufacturer . B . Install self - adhering sheet membrane wrinkle free . Apply primer if required by membrane manufacturer . Comply with temperature restrictions of membrane manufacturer for installation . Apply over entire roof , in shingle fashion to shed water , with end laps of not less than 6 inches staggered 24 inches between courses . Overlap side edges not less than 4 inches . Roll laps with roller . Cover membrane within 28 days . C . All transitions , including but not limited to wood blocking and fall arrest stanchions , shall be treated with a 1 inch by 1 inch minimum fillet of sealant to ease transition of the membrane sheets . Seal transitions air tight . D . Vertical offsets that are 1 / 8 inch shall be pre - treated with an 8 inch wide strip of membrane centered over the joint . Vertical offsets greater than 1 / 8 inch shall be repaired to bring them into conformance with the project specifications . E . Sheet installation shall be done in such a way as to avoid stretching membrane while removing release paper . It is recommended that sections of membrane be pre - cut to no more than 12 feet in length and allowed to fully relax prior to application . F . Patch misaligned or inadequately lapped seams with membrane . Slit any fishmouths , overlap the flaps , and repair with a patch of membrane and roll in place . G . At vent , fall arrest stanchions , and similar penetration locations , cut sheet around base of penetrations . Apply 1 inch sealant fillet at vertical transition . Install 24 inch square membrane target sheet centered on stanchion , tightly lapping up onto stanchion 3 inches minimum . Install stainless steel clamp ring and seal top edge with sealant for airtight flashing installation . H . Flashing strips used to seal edges of transition or edge sections of membrane coated sheet metal shall be provided with 3 inch minimum laps onto primed sheet metal and membrane sheets unless otherwise noted on Drawings . I . Turn membrane up wall surfaces and onto wood blocking as shown on Drawings . Seal top edge of overlap with sealant . 3 . 05 INSTALLATION POLYISOCYANURATE INSULATION A . Only install as much insulation as can be covered in a day ’ s roofing operation , and do not leave exposed to precipitation . B . Warped or bent insulation boards or boards with damaged facers shall not be used . C . Provide sizes to fit applications indicated and selected from manufacturer ’ s standard thicknesses , widths , and lengths . D . If installed in two layers , install with long joints in continuous straight lines with end joints staggered , with second layer transverse to first layer , with joints staggered at least one - third of overall length from those of first layer . E . Install in layers with joints of each succeeding layer staggered from joints of previous layer a minimum of 6 inches in each direction . 1 . All layers to be adhered with adhesive . 2 . Apply ribbons of bead - applied adhesive at coverage rate specified by the manufacturer to achieve the project uplift rating . Allow adhesive to rise or set up according to the manufacturer ’ s recommendations ...

Oregon

2026-05-11