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i l 1 � c c � ICC-ES Evaluation Report ESR-1601* Reissued September 1, 2012 This repo►f is subject to renewa/November 1, 2014. www.icc-es.orq � (800)423-6587 � (562)699-0543 A Subsidiary of the Intemationa!Code Council� DMSION:07 00 00—THERMAL AND MOISTURE instructions. The manufadurer's published installation PROTECTION insVuctions must be available at the jobsite at all times Section:07 30 05—Roofing Felt and Underlayment during installation. REPORT HOLDER: Prior to application of the underlayment, the roof deck surface must be free of frost,dust and dirt,loose nails,and ALPHA PROTECH ENGINEERED PRODUCTS,INC. other protrusions.Damaged sheathing must be replaced. 301 SOUTH BLANCHARD STREET Installation of an approved roof covering can proceed VALDOSTA,GEORGIA 31601 immediately following application of the roofing (229)242-1931 underlayment. The unde�layment is to be cover�ed by the www.alahaarotech.co_m roof covering within the time set forth in the underlayment manufacturers published installation instrudions. For EVALUATION SUBJECT: reroofing applications, the same procedures apply after removal of the existing roof covering and roofing felts to REXTM SYNFELT, REXTREME AND TECHNOPLY expose the roof dedc. SYNTHETIC ROOF UNDERLAYMENTS 4.2 Applications: 1.0 EVALUATION SCOPE The underlayment must be installed in axordance with Compliance with the following codes• Chapter 15 of the IBC or Chapter 9 of the IRC, and must � be laid printed side up horizontally (parallel to the eave) ■ 2012,2009 and 20061ntemational8uilding Code�(IBC) starting at the lower edge of the roof, with 3-inch(76 mm) ■ 2012,2009 and 2006 Intemational Residentia!Code� horizontal (head) laps and 6-inch {152 mm) vertical (end) QRC) laps. Properties evaluated: The underlayment must be fastened to the roof deck using minimum No. 12 gage [0.109-inch (2.77 mm)] ■ Physical properties minimum shank diameter, corrosion-resistant roofing nails ■ Fire classification having minimum 1-inch-diameter (25.4 mm) plastic caps. 2.0 USES The fasteners must be spaced 8 inches (203 mm) on c�nter at vertical and horizontal laps, and 24 inches REXTM' SynFelt, REXtreme and TECHNOpIy synthetic (610 mm) on center vertically and horizontally in a roofing underlayments are altematives to the ASTM D226, staggered pattem in the fiefd of the underlayment, except Type I and Type II, roofing underlayment specified in in areas subject to high winds where underlayment Chapter 15 of the ISC and Chapter 9 of the lRC. The fastening must comply with high wind attachment underlayments are also used as components of classified requirements speafied in IBC Section 1507 or IRC Section roofing assemblies when installed as described in this R905. Fasteners must be long enough to penetrate into the report. sheathing a minimum of 3/a inch (19.1 mm) or through the 3.0 DESCRIPTION sheathing, whichever is less. When battens are installed over the underlayment, the undehayment need only be The roof underlayments consist of a woven polypropylene preliminarily attached pending attachment of the battens or fabric with a polypropylene coating on each side. The counterbattens. REXTM SynFelt, REXVeme and TECHNOpIy synthetic underlayments have nominal weights, respedively, of 2.56 A single layer of minimum 24-inch-wide (610 mm) pounds per 100 square feet (125 glm2), 2.97 pounds per underlayment must be installed and centered vertically at 100 square feet (145 g/m2), and 2.05 pounds per 100 all valleys before underlayment in the field, and at all hips z and ridges after underlayment in the field. square feet(100 g/m ),and are produced in rolls of various sizes. Where the slope is from 2:12(17 percent slope)up to 4:12 4.0 DESIGN AND INSTALLATION (33 percent slope) and the roof is to be covered�with 4.1 General• asphait shinglea, or where the slope is from 2/2.12 • (21 percent slope) up to 4:12 (33 percent slope) and the Installation must comply with the applicable code, this roof is to be covered with concrete or clay roof tiles, the report and the manufacturer's published installation underlayment must be horizontally lapped 24 inches `Revised November 2012 ICC-ES EvaJuation Reports ore not to 6e consrrued as representing authettcs o�mry oiher atlrr6vtes not spectfirnity addressed��are tirey to 6e constroed � as an endorsement vjthe su6Ject oJthe repori or a recammendatron for fcs use.There is ra warmnry bylCC Evahration Servrce,LLC,exprrss or implied a+' ��,�/ tu a�ry jrnling or orher matrer in thrs report,or as to arry product covered by the report. �°1�` �"'�' Copyrlght�2ot 2 Page 1 of 2