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ESR-1757 Page 3 of 6 f. Flat (field) areas must receive a coat of Neobond II membrane liquid at a rate of 21 pounds per square (1 kg/m2). Random strands of fiberglass mat, weighing 1/4 ounce per square foot (76 g/m2), must be embedded into the wet Neobond II. The combined thickness of Neobond II and fiberglass must be approximately 0.050 inch (1.3 mm). Each coating must be dry (this normally requires 12 to 16 hours) before recoating. g. An additional coat of Neobond II is applied, to fill voids in the jute and fiberglass fabrics, at the rate, respectively, of 6 pounds and 5 pounds per square foot (29 kg/m2 and 24 kg/m2). Thickness of the membrane system must be 0.085 inch (2.1 mm) at perimeter and flashing areas and 0.062 inch (1.6 mm) in the field area. About six hours are needed for cure. h. A mixture of one part N-38 paste and five parts Standard Neotex powder, by weight, must cover the surface at a rate of 80 pounds per 100 square feet (3.9 kg/m2). The approximate dry thickness must be 0.090 inch (2.3 mm). After curing for a minimum of 12 hours, a second application at a rate of 52 pounds per 100 square feet (2.5 kg/m2) yields a dry thickness of 0.060 inch (1.5 mm). The total application is 132 pounds per 100 square feet (6.4 kg/m2), for a total dry thickness of 0.150 inch (3.8 mm). i. After the Standard Neotex has cured for a minimum of 12 hours, a topping mixture of one part Resistite paste and 2.75 parts Resistite powder, by weight, must be troweled on at a rate of 18.5 pounds per 100 square feet (0.9 kg/m2), yielding a minimum dry thickness of 0.016 inch (0.4 mm). After curing to a dry state for a minimum of three hours, another topping is applied using one part Resistite paste to 2.1 parts Resistite powder, at a rate of 12 pounds per 100 square feet (0.6 kg/m2), yielding a minimum dry thickness of 0.010 inch (0.25 mm). Total topping application must yield a minimum dry thickness of 0.028 inch (0.71 mm). j. After the topping application has cured to a dry state for a minimum of three hours, two coats of AJ-44 dressing must be roller-applied, at a rate of 150 square feet per gallon (3.7 m2/L), yielding a minimum dry thickness of 0.005 inch (0.13 mm). The first coat must be cured dry (this normally requires two to four hours) before application of the second coat. Total thickness of Items e through j of Section 4.3, excluding base sheet and perimeter/flashing bond coating, must be a minimum 0.245 inch (6.2 mm) at flat areas and 0.268 inch (6.8 mm) at perimeter areas. 4.4 Class A Roof Covering Over Concrete and Steel Decks: The roof deck must be concrete or steel prepared as noted in Section 4.2 of this report, with a minimum slope of 1/2:12 (4%). For concrete substrates, the base sheet must be bonded to metal flashing at the perimeter. For steel decks, the base sheet is optional. If a base sheet is used on steel decks, it must be bonded directly to the steel deck at the perimeter or installed with a metal flashing as for the concrete surface. The roof covering must be installed in accordance with items b through j of Section 4.3, above. 4.5 One-hour Fire-resistance-rated Construction: The Dex-O-Tex Weatherwear Roof Deck covering installed as described in this report over 5/8-inch-thick (15.9 mm) exterior-grade plywood with 2-inch-by-8-inch (51 mm by 203 mm) joists spaced 16 inches (406 mm) on center, with all plywood joints blocked, may be substituted for the double wood floor described in Footnote 13 of Table 7-C of the UBC and Item 13 and footnote m of Table 721.1(3) of the 2021, 2018, 2015 and 2012 IBC [Item 13 and footnote m of Table 720.1(3) of the 2009 and 2006 IBC]. When installation is over nominally 2- by-8 joists, the design bending stress assigned to the joists must be limited to 78 percent of the code-prescribed design values. 5.0 CONDITIONS OF USE: The Dex-O-Tex Weatherwear Roof Deck Covering described in this report complies with, or is a suitable alternative to what is specified in, those codes listed in Section 1.0 of this report, subject to the following conditions: 5.1 Materials must be manufactured and applied in accordance with this report and the manufacturer’s instructions. In the event of conflict between this report and the manufacturer’s installation instructions, this report must govern. 5.2 Applications must be by applicators authorized by Crossfield Products. 5.3 Fire classification must be as described in Sections 4.3 and 4.4. 5.4 Under the 2021, 2018, 2015 IBC and IRC, and 2012 IBC, installation must be limited to areas subject to an ultimate design wind speed (Vult) of 130 mph (209 km/h) on structures with a maximum height of 40 feet (12,192 mm) in Exposure B areas.