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BETEC™ FLX 120 is a fast curing, two-pack, polymer modified, tough cementicious waterproofing membrane. It is reinforced with specially graded synthetic fibre. When blended, BETEC FLX 120 forms a flexible matrix of rubber polymer and hydrate structures, providing a tough breathable membrane that is impermeable to liquid water. BETEC FLX 120 is easily applied as slurry onto horizontal and vertical surfaces.
BETEC FLX 120 waterproof membrane is ideally suited for general purpose use on all commercial and residential applications including:
Bonds securely to concrete, masonry, cement render, FC and CFC sheet, brick, block, ALC, etc.
Surfaces to be sound, smooth and free from dust, loose matter, oil, grease or other contaminants. All surface defects shall be repaired using CHEMBOND™ modified mortar.
Use SILCOR® LM PU sealant to fill joints, cracks and form fillets to all internal corners or penetrations and allow to fully cure a minimum 24 hrs before applying BETEC FLX 120.
| Colour | Part A – Dark Grey Powder |
| Mix Ratio (by weight or volume) |
Part A : Part B 1 : 1 |
| Solids | 90% |
| Application Temperature | 5°C to 30°C |
| Pot Life | 50 minutes @ 25°C |
| Through Cure | 2 hours (1 mm @ 25°C) |
| Crack Bridging | Up to 2 mm |
| Elongation | 500% |
| Adhesion to Concrete (porous) | 0.5 N/mm2 |
Use SILCOR LM PU sealant to form a 12mm angle in accordance with NCC as detailed by AS3740 and AS4654 for Class III waterproof membrane. Allow PU sealant to cure a min. 24 hours before proceeding with membrane installation.
BETEC FLX 120 membrane is foot trafficable for surfacing/tiling within 8 hours. Use the following systems for specific situations as listed. Apply surfacing materials only to fully cured BETEC FLX 120.
Cover with PROTECTOBOARD™, PROTECTOBOARD™ HS or RAPID DRAIN™, followed by backfill or landscaping as required.
Use two layers of 0.2 mm PE slip-sheet with concrete topping. Paving slabs may be installed with a cement mortar bed or laid on sand. Ceramic tiles may be laid on bedding or directly fixed with polymer-modified cement-based adhesive. CHEMBOND™ polymer modified render or acrylic based textures may be applied directly to cured BETEC FLX 120.
BETEC FLX 120 40 kg set yields approx. 32 litres liquid membrane.
Floors – minimum 2.0 litres/m2 (min. 1.25mm DFT)
Walls – minimum 1.6 litres/m2 (min. 1.0mm DFT)
Minimum 2.25 litres/m2 (min. 1.5mm DFT)
Minimum 1.6 litres/m2 (min. 1.0mm DFT)
Minimum 3.2 litres/m2 (min. 2.0mm DFT). Allow to dry thoroughly between coats.
BETEC FLX 120 is supplied in 40 kg kits.
Unopened or resealed pails of BETEC FLX 120 have a shelf life of 12 months, when stored in a dry, cool place.
Remove uncured BETEC FLX 120 with water. MULTITEK™ Xylene may assist with the removal of cured product. Exercise care and review all SDS before solvent use.
In case of spills and accidents, refer to the MSDS of the products or when in doubt contact your local GCP representative. Always wear protective clothing, gloves and protective goggles when handling chemical products. For full information, consult the relevant SDS.
Information contained in this document does not cover all possible application scenarios or imply product suitability for an application. Please contact your local GCP representative or the GCP Technical Department for further information.
GCP and contractors recognised by GCP as experienced in the application of GCP products will provide product warranties for individual projects. Product warranty periods offered are dependent on project details and complexity. Requests for long product warranty periods may necessitate increased membrane thicknesses to ensure longevity. GCP do not provide product warranties for membranes in negative pressure applications. Contact your local GCP representative for further details.
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