Fulaflex 570FC PU is a one-component moisture-curing
fast-cure polyurethane adhesive/sealant specifically developed for application
to concrete and masonry. It has fast curing properties that develop into a
strong, durable and weather resistant adhesive/sealant and exhibits excellent
adhesion to a wide range of substrates. Fulaflex 570FC PU is low in VOC
(<60g/L) and satisfies the requirements for the Green Building Council of
simple clean up - minimal mess
Excellent adhesion to many surfaces
Excellent resistance to ageing/weathering - suitable for
interior and exterior use
Paintable once cured
Low VOC - ca. 58g/L
Bonding and sealing in one
Excellent vibration and dampening properties
Sealing floor joints in concrete floors.
Bonding and sealing fibre-cement panels.
Sealing roof and gutter joints.
Pick resistant sealant for use in public areas, shops,
schools, prisons, etc.
Sealing pipe and duct penetrations in walls and floors.
Joints around windows, doorframes and walls
Lap joints secured with fasteners. Conformance Standard
Fulaflex 570FC PU meets the requirements of: - ISO 11600/F/25HM
Compatible Substrates aside from masonry and concrete. Ceramic,
Cement sheet, Polyurethane, Plasterboard, Polystyrene, Steel, Aluminum
(uncoated) Timber, Plastic and coated metals (Pre-Test) Glass (Not suitable for
Specific Gravity: ca. 1.33
Sag: 0mm (25mm x 12mm joint)
Tooling Time: ca.40 minutes @ 23 C & 50% RH
Skinning Time: ca. 50min, 23 C, 50% RH
Cure Rate: 4mm / day, generally
Hardness (Shore A): 35-45
Max Elongation: ca. 800%
Modulus 50%: ca. 0.60MPa
Modulus 100%: ca. 0.70MPa
Modulus Max: ca. 2.23MPa
Surface Preparation All surfaces must be clean, dry, sound
and free of dust, oil, old sealant or other contamination. Lightly contaminated
surfaces should be wiped with Isopropyl Alcohol (IPA) using the 2-rag wipe
method. Apply IPA to a clean lintfree cloth and wipe onto the surface to be
cleaned to solubilize and remove the majority of the contaminant. A clean dry
cloth should then be applied to remove remaining contamination and dry the
surface. Ensure wet cleaner is not allowed to dry on surface. For more heavily
contaminated surfaces or where the IPA does not remove the contaminant, a
generic wax and grease remover should be applied using the same 2- rag wipe
method. Once this has been completed the surface should be given a final clean
with IPA using the 2-rag wipe method to ensure the surface is adequately
prepared. Adhesion to metals and some surface finishes can be further improved
by light abrasion prior to cleaning with IPA using the 2 rag-wipe method.
Manufacturers of plastics should be consulted about suitable cleaning solvents.
Adhesion to plastics should be pre-tested. Mask either side of joint to produce
a neat finish.
Use a suitable sized foam backing rod or polyethylene bond
breaker tape to prevent three sided joint contact impeding the free and even
deformation of the sealant in a cyclic joint. Open-cell polyurethane foam is
recommended. Use a size 25% wider than the joint width that will compress when
inserted into the joint. Priming – For difficult substrates In conditions where
a primer is necessary prior to application of Fulaflex 570FC PU, HB Fuller
recommends the application of TEC Multipurpose Primer on approved substrates.
Apply primer as detailed on the TEC Multipurpose primer datasheet, allowing
time to cure, before applying Fulaflex 570FC PU as per guidelines. All surfaces
should be cleaned prior to the application of TEC Multipurpose Primer. Product
Application Insert the sausage into the applicator gun and make a small
incision at the extrusion end of the sausage. Fit the barrel end and nozzle, with
the nozzle cut to deliver the appropriate bead size and shape. As an adhesive:
Apply product to one surface to be bonded in a neat uniform size bead (triangle
shape preferable). Before product skins, mate with other surface. When bonding
a sheet or panel to a large, flat surface, apply 10mm triangular beads every
30- 40cm along the entire length. Press into position and brace until set.
Temporary or mechanical fixing may be required depending upon substrates. Bond
will develop dependent upon thickness of adhesive, and ambient conditions.
humidity and warmer temperatures will hasten bond
development. Minimum adhesive depth for bonding application is 1-2mm. As a
sealant: Gun Fulaflex 570FC PU by pressing the trigger to continuously fill the
joint - while ensuring that air does not get trapped in the sealant/joint.
After filling an appropriate length of joint, smooth the sealant with a spatula
or trowel, pressing the sealant into the joint to form the required finish
while ensuring the sealant fills the joint and is complete contact with the
substrates. The application tool should contact the entire surface that is
required to be tooled. Good joint design in the construction industry
necessitates a joint width equal to 4 times the anticipated movement of
building components. The theoretically derived 2:1 movement factor is based on
thermal movement alone and doesn't allow for variances found at the job site
and therefore should not be used. The 4:1design factor accommodates both
thermal movement and wide variations in tolerances of construction materials,
fabrication and erection often found in the field. This will also accommodate
joints installed narrower than originally designed. In standard expansion
joints, the joint should be minimum 6mm width. For joints between 6mm and 12mm
width, the depth of the sealant should be the same as the width. For joints
between 12-24mm width, the depth should be 12mm. For joints 24-30mm width, the
depth should be half the width.
Chemical Resistance Long term resistance to fresh water,
seawater, limewater, mild caustic solutions and cleaning agents. Short term
resistance to Petrol, grease and mineral oil. Not resistant to organic acids,
concentrated mineral acids or solvents. This information is offered for general
guidance only. Advice on specific applications will be given on request