Flex FB LOW Rise Adhesive User Manual download pdf

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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

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Product Data Sheet

FLEX FB LOW RISE ADHESIVE

PRODUCT DESCRIPTION

Flex FB Low Rise Adhesive is a two component, low rise polyurethane adhesive designed to attach Flex

Fleeceback Roofing Membranes to a variety of approved substrates in accordance with current Flex Roof

Details and Specifications.

APPLICATION

Install only as much roof membrane adhered with Flex FB Low Rise Adhesive as can be covered and

made watertight during that working day. The substrate must be clean, smooth, dry and free of sharp

edges, loose and foreign materials, oil, grease, and other contaminants. Proper equipment must be used to

install Flex FB Low Rise Adhesive. Apply the adhesive on the substrate in beads spaced at a maximum

of 12” (300 mm) on center with a ¾” – 1” (19.00 mm-25.4 mm) wide bead. It is important to allow the

adhesive to rise in height. Before a skim coat develops on the adhesive mate the Flex fleeceback roofing

membrane to the substrate. Immediately after setting the membrane in the Flex FB Low Rise Adhesive, it

is required to apply continuous pressure to the bonded membrane using a roller (maximum weight 150

lbs. – 68 kg). It is important that freshly installed membrane remain in contact with the substrate and Flex

FB Low Rise Adhesive until the adhesive sets to ensure proper adhesion.

COVERAGE RATE

Rate is average coverage based on approved, smooth, non-porous surface with a ¾” to 1” (19-25 mm)

wide bead.

Bead Spacing Coverage Rate: ft²/gal (m²/L)

12” o.c. 170-200 (4.1-4.8)

6” o.c 90-120 (2.2-2.9)

4” o.c. 60-90 (1.4-2.2)

These are typical coverage rates that are applicable when the Flex FB Low Rise Adhesive is properly

mixed with a 1:1 ratio and applied in the appropriate bead spacing in a serpentine pattern at a bead width

of ¾” to 1” (19 mm to 25.4 mm). Coverage rates may vary on substrate type and condition as well as

increasing the bead spacing.

REACTION TIME

When applying the Flex FB Low Rise Adhesive, the Flex FB membrane must be placed in the adhesive

while it is still wet and tacky (before it reaches tack free state). The membrane may be placed into the

adhesive shortly after it has reached its maximum rise typically after 2-3 minutes.

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Product Data Sheet 1

Summary of Contents

Page 1 - Product Data Sheet

_____________________________________________________________________________________________________ Flex Membrane International Corp. 2670 Leiscz’s

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_____________________________________________________________________________________________________ Flex Membrane International Corp. 2670 Leiscz’s

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