Project Description

BuildenFlex-1K One-Component Flexible Cementitious Waterproofing Membrane

BuildenFlex-1K One-Component Flexible Cementitious Waterproofing Membrane


Product Name BuildenFlex - 1K: One Component Flexible Cementitious Waterproofing Membrane
Description BuildenFlex–1K is a single component flexible cementitious waterproofing membrane with alkali- resistant polymer, special additives and graded aggregates to give flexible waterproofing mortar suitable to most common substrate to prevent water ingress.
General Characteristic - Adjustable water dosage in order to obtain desired consistency and workability
- Easy to apply by brush roller and trowel even on vertical surfaces
- Bond to damp substrates
- Very good adhesion to most common substrate
- Good crack bridging properties
Application - Basement
- Terrace & Balconies
- Waterproof protection of concrete structure for tanks, basins, pipes and swimming pools
- Bathrooms
Packaging 20kg/bag
Shell Life Keep BuildenFlex–1K in cool, dry and shaded warehouses. Avoid direct in contact with the floor. When stored under the correct conditions BuildenFlex–1K will have a shelf-life for 12 months.


Consistensy of Mixture Slurry
Colour of Mixture Grey
Pot life of Mixture 1 hour
Density of Mixture 1.8 - 1.9 g/cm³
Binder Portland cement
Extender Graded fine silica
Adhesion strength 2.0 MPa
Tensile strength 1.8 Mpa
Elongation at break > 25%
Crack bridging 0.7 mm
Resistance to
water penetration
No penetration
(5 bar for 3 days)
Set to touch (at 30°C) 2 hours
Final set (at 30°C) 24 hours
Application Application of BuildenFlex–1K by:
- Trowel, pressing the trowel on the substrate evenly to maintain the BuildenFlex – 1K thickness
- Brush, in 2 direction (perpendicularly) BuildenFlex–1K must be applied at least two coats.
The first coat is applied to cover the area evenly within 1 hour of it being mix. The second coat may be applied when the first layer has become tack free after 2 to 4 hours depending on the ambient condition.
The maximum recommended thickness - 1 mm per coat by brush
- 2 mm per coat by trowel
For areas which exposed to sunlight, protective topping should be installed for further enhance the durability of BuildenFlex–1K.

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