Sarnafil® G 410 SA Flashing Membrane

High-quality PVC membrane containing ultraviolet light stabilizers, flame retardant, fiberglass reinforcement, with a unique lacquer coating on the top surface and pressure-sensitive adhesive with a removable siliconized polyethylene release liner on the back surface.

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Store rolls standing on end on pallets and fully protected from the weather with clean canvas tarpaulins. Unvented polyethylene tarpaulins are not accepted due to the accumulation of moisture beneath the tarpaulin in certain weather conditions that may affect the ease of membrane weldability.

All surfaces must be clean, sound, dry, and free of loose materials and laitance, or contaminants such as water, frost, ice, oil and grease that would interfere with proper adhesion and compromise the performance of the product.

In accordance with the ICRI Technical Guideline No. 310.2R-2013, concrete surfaces must be finished by forming, wood float, steel or power trowel, or broom finished to meet a concrete surface profile (CSP) of 1 – 4.

G 410 SA Flashing Membrane is installed after proper preparation of the approved substrate. The flashing membrane is unrolled and cut to length. Position the flashing membrane with the 6" (152 mm) selvage edge overlapping the field roof membrane to accommodate heat welding of the overlap. Remove the release liner from the flashing membrane in a smooth, wrinkle-free manner while maintaining the 6" (152 mm) overlap onto the field roof membrane. Immediately roll the flashing membrane with a hand roller.

Butt factory edges and cut edges together and hot-air weld an 8" (203 mm) Sarnafil G 410 or Sikaplan Adhered coverstrip over the edge joint using hot-air welding equipment operated by trained operators. Heat weld the flashing membrane selvage edge to the roof membrane. All adhered flashing that exceeds 45" (1.14m) in height shall receive additional securement, unless applying to plywood, DensDeck Prime, concrete block, or concrete with a CSP of 1-4. Terminate the flashing membrane according to standard Sika roofing details.