![]() Cladding attachment over foam sheathing shall comply with the additional requirements and limitations of Sections R703.15 through R703.17. The nominal thickness and attachment of exterior wall coverings shall be in accordance with Table R703.3(1), the wall covering material requirements of this section, and the wall covering manufacturer's installation instructions. Exterior wall envelope assemblies shall be subjected to the minimum test exposure for a minimum of 2 hours.Exterior wall assemblies shall be tested at a minimum differential pressure of 6.24 pounds per square foot (299 Pa).Exterior wall envelope test assemblies shall be at least 4 feet by 8 feet (1219 mm by 2438 mm) in size.All tested openings and penetrations shall be representative of the intended end-use configuration. ![]() ![]()
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