Flex TPO Split Pipe Boots - Manual (Page 2)

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Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533
Tel: (610) 916-9500 Fax: (610) 916-9501 www.FlexRoofingSystems.com
Page 2
8. Tack weld the back edge of the pipe-seal’s vertical leg ensuring that good contact is maintained
between the pipe seal and the pipe. This process will hold the pipe-seal in place.
9. Heat-weld the entire width of the vertical overlap. Hand roll against the outer surface of the pipe
to create the pressure necessary to achieve an acceptable weld.
10. Heat-weld the base flange to the deck membrane and complete the horizontal overlap weld.
11. Install a stainless steel universal clamping ring to provide constant compression of the sealant.
12. Apply Flex TPO Cut-Edge Sealant to all edges of the pipe-seal that are located on the horizontal
plane. Do not apply the sealant to vertical surfaces.
CAUTIONS AND WARNINGS
· Remove all lead and other flashing.
· Temperature of pipe must not exceed 180°F (82°C).
· Install a minimum of four fastening plates around pipe penetrations. Position
· fastening plates around the penetration so the plates are covered by the pipe-seal
· flange. A minimum 1-1/2 inch wide weld must be maintained around the outer
· edge of the flange beyond the plates. If fastening plates cannot be installed in a
· manner to allow a minimum 1-1/2 inch weld, the plates must be placed outside the
· pipe-seal flange and covered with a reinforced Flex overlay.
· Store pipe Boot in a cool, shaded area and cover with light-colored, breathable,
· waterproof tarpaulins. Flex TPO Split Pipe-Boot or membrane that have been
· exposed to the weather for approximately 7 days or longer prior to use must be
· prepared with Flex Weathered Membrane Cleaner prior to hot air welding.