Flex TPO Extension Legs User Manual

Product Data Sheet

FLEX TPO EXTENSION LEGS

PRODUCT DESCRIPTION

Flex TPO Extension Legs are designed for use with the Flex TPO Molded Sealant Pocket to extend the
sealant pocket by increments of ten inches. Fabricated from 45 mil thick TPO reinforced membrane and
TPO coated metal, the Flex Extension Legs can be used full length, cut to size for customized lengths or
welded to each other for extra long applications. They are packaged 10 legs per carton and available in
white.

PHYSICAL PROPERTIES

Size: 14” overall length, 10” installed length
Packaging: 10 per carton
Weight (per box): 6 lbs.
Material: Reinforced TPO membrane and coated metal
Color: White

INSTALLATION

1. Clean the inside of the Flex TPO Extension Legs and Flex TPO Molded Pockets as well as the
areas where the pocket overlaps, the underside of the pocket flange and the deck membrane with
Flex Weathered Membrane Cleaner. Use a Primer Pad with the cleaner if the membrane has been
exposed for an extended period of time.

2. Place the Flex TPO Molded Pocket and the Flex TPO Extension Legs around the penetration(s),
overlapping the two sections of the pocket with the extension legs. The extension legs must be
positioned as follows: the two-inch TPO overlap tab is placed on the topside of the molded pocket
and the opposite end (with no welding tab) is placed on the underside of the opposing molded
pocket.

3. Cut a piece of cardboard (approximately 4” x 4”) and place it under the overlap area to be welded.
The cardboard prevents the pocket and extension leg from fusing to the deck membrane when first
welding overlaps.

4. Using a hand welder, weld the angle change in the overlap areas at each end of the extension leg.
Using the end of a seam probe assists in this process. (The hand-welder temperature setting
should be between 5 and 6).

5. Hand-weld the remainder of the horizontal overlaps.

_____________________________________________________________________________________________________

Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533

Tel: [phone] Fax: [phone] www.FlexRoofingSystems.com

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6. Position the molded pocket and extension legs so the vertical overlap is against the penetration.
This will allow proper pressure to be applied with the 2-inch silicone roller.

7. Weld all the vertical overlaps starting at the angle change and progressing to the top of the pocket.

8. Make tack-welds on all four sides of the pocket to hold it in place.

9. Weld the entire horizontal flange of the molded pocket and extension legs to the deck membrane.
Crease all step-offs with the edge of the silicone roller to avoid water channeling.

10. Using a seam probe, check all splices for voids and cold-welds. Make any needed repairs.

11. Apply a thin coat of Primer to the TPO membrane, penetration(s) and around the top rim of the
pocket using a small paint brush. Do not apply Primer to the galvanized metal surface utilized

on the inside of the extension leg.

12. Fill the pocket with Thermoplastic One-Part Sealant. Use an adequate amount of sealant to ensure
that contact is made with the top rim of the pocket. One set of Flex TPO Extension Legs welded
to a Flex TPO Molded Pocket will require 1 gallon (3.785 liters) of sealant to fill the extended
pocket.

CAUTIONS AND WARNINGS

· The walls of the Flex TPO Extension Legs and Sealant Pockets must be a minimum of one-inch
from any penetration.

· Flex TPO Extension Legs are designed to fit both sides of the Sealant Pocket without having a
designated left or right part.

· Clean Flex TPO Extension Legs, Sealant Pocket, TPO membrane and the penetration(s) prior to
use with Flex Weathered Membrane Cleaner. Primer pads must be used if the membrane has been
exposed for an extended period of time. Apply Primer to the TPO membrane and

penetration(s) surfaces only. Do not apply primer to the galvanized metal surface utilized on
the inside of the extension leg.

_____________________________________________________________________________________________________

Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533

Tel: [phone] Fax: [phone] www.FlexRoofingSystems.com

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