
Product Data Sheet
FLEX TPO SPLIT PIPE BOOTS
PRODUCT DESCRIPTION
Flex TPO Split Pipe-Boots are fabricated flashings made of 45-mil reinforced Flex TPO membrane for
pipes 1-inch (25.4 mm) to 6-inches (152.4 mm) in diameter. A split (cut) and overlap tab are incorporated
into these parts to allow the pipe-boots to be opened and wrapped around a round pipe with an
obstruction. Such obstructions prevent the use of a standard pre-molded pipe-seal. Split Pipe-Boots are
packaged in boxes of eight and come with universal clamping rings.
PHYSICAL PROPERTIES
Sizes: 1”, 2”, 3”, 4”, 5” and 6” O.D. Pipe
(25.4, 50.8, 76.2, 101.6, 127.0 and 152.4 mm)
Packaging: 8 per box
Weight (each): 0.55 lbs. (0.25 kg)
Material: Reinforced 45-mil TPO membrane
Color: White
INSTALLATION
1. Order the proper size pipe-seal. The following outlines the method to determine the proper size.
The nominal diameter of the pipe-seal indicates the maximum size the part will effectively fit.
Each pipe-seal can accommodate a pipe 1-inch smaller in diameter than the nominal size
indicates. For example, the 2-inch part can be utilized to flash pipes from 1-1/16 inches to 2
inches in diameter, the 3-inch part will fit pipe diameters from 2-1/16 inches to 3 inches in
diameter, etc.
2. Open pipe-seal by pulling apart the tack welds located on the vertical leg of the flashing.
3. Wrap the pipe-seal around the pipe until the vertical leg is tight against the outside diameter of
the pipe.
4. Mark the pipe around the top of the pipe-seal.
5. Remove the pipe-seal from around the pipe.
6. Install Water Cut-off Mastic below the mark, which indicates the top of the installed pipe-seal.
7. Wrap the pipe-seal back around the penetration until the vertical leg is tight against the outside
diameter of the pipe.
_____________________________________________________________________________________________________
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
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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.
_____________________________________________________________________________________________________
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
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