Products / STINGER EXO Synthetic Underlayment

EXO is STINGER's mechanically attached synthetic roof underlayment line, sold in EXO25, EXO35 and EXO50 grades plus EXO25 FIT, a 24-inch half-width EXO25 roll for starting and finishing double-layer applications. The experience sheets print 48-inch by 250-foot, 10-square rolls made in India with fabric weights of 95, 110 and 155 GSM, rolls of 20, 23 and 32 lb, and 25, 35 and 50 year warranties for EXO25, EXO35 and EXO50 (EXO25 FIT takes the warranty of the full roll it is installed with), a slip-resistant backside coating with a spunbond non-woven walking surface, up to six months of UV exposure, and a claim of testing in winds up to 180 mph when fastened with STINGER collated cap fasteners. Each sheet lists Florida product approval FL42439, TDI listing and Miami-Dade approval, and applicable standards Intertek CCRR-0504, ASTM E108 (Class A), ASTM D8257, ASTM D4869 Type IV and ASTM D226 Type I and II. The EXO50 sheet's Spanish heading names EXO35, and the product pages' specification tabs carry placeholder text and coil roofing nail figures that do not describe the underlayment.