dura.®flex is used for:
No priming required.
All surfaces that are to receive the coating must be free from oil, grease, wax, dirt or any other form of foreign matter that might affect adhesion. Typically concrete may require grit blasting. Spalled surfaces or those containing large blowholes and other such defects should be repaired using dura.®flex or an a.b.e.® approved repair mortar. Care must be taken when choosing the repair mortar to ensure that it has all necessary approvals for contact with potable water. If the surface contains small blow holes, typically less than 1 mm wide, the coating can be applied directly onto the substrate without the need for a treatment. Cracks which are less than 0.3 mm in width can be over-coated as long as the crack is not likely to open up to greater than 0.3 mm (this is greater than the maximum permissible crack widths recommended in BS 8007:1987, the British Standard Code of Practice for the design of concrete structures for retaining aqueous liquids). Cracks that are greater than 0.3 mm in width should be chased-out to 4 mm in width and approximately 15 mm in depth. This should be filled with dura.®flex (applied using less liquid providing a thicker consistency). When the material in the crack has hardened the coating should be applied over the crack.
It is essential to use a mechanical mixer, such as a slow speed electric drill fitted with a suitable paddle. Our Technical Department will be pleased to supply details of blade design.
Fill approximately three quarters of component A (milky liquid) into a pail and, with continuous stirring, slowly add component B (greyish powder). Mixing must be continued until the mix is homogeneous and free of lumps.
For horizontal surfaces such as the base of reservoirs, add the remaining component A. For other applications add only sufficient component A to provide a suitable consistency. When the two components are mixed together, a plastic thixotropic liquid results which is easy to apply.
The very finely dispersed resin component imparts excellent adhesion to concrete, plaster, and natural stone surfaces.
Once cured, dura.®flex is waterproof and resistant to weathering. It exhibits a high degree of impermeability to water vapour and carbon dioxide. The cured coating is highly flexible and may be used to overbridge hairline cracks up to 0.2 mm in width. dura.®flex is nontoxic and contains no chlorides.
Nominal coverage rate: 8 m2/15 kg for 1 mm wet film thickness. The coverage figure given is theoretical due to wastage factors and the variety and nature of possible substrates, practical coverage figures will be reduced. A minimum coverage of 2 kg/m2/mm applied in not less than two coats which is recommended.
dura.®flex may be applied to the correctly prepared surface by short bristled block brush, rubber squeegee, trowel or spray.
Brush: using a block brush, dura.®flex should be applied in three coats to provide a final dry film thickness of between 2 – 3 mm on surfaces. Alternate coats should be applied at right angles to each other, allowing 16 hours between coats.
Trowel: horizontal surfaces – the first layer of dura.®flex should be applied to a thickness of 1 – 1.5 mm. Allow to cure for approximately 16 hours and then apply a second layer using a steel float. dura.®flex should not be applied thicker than 1.5 mm per coat.
Spray: contact our Technical Department for details of the special equipment required. Gloves should be worn when mixing and using dura.®flex.
Tools, brushes and mixing equipment should be cleaned immediately after use and before material has set with abe® super brush cleaner followed by washing with soap and water.
dura.®flex may be left as is, or:
Application temperature: 5°C to 40°C.
Do not apply if rain is imminent.
Two-component, flexible waterproofing slurry. The waterproofing compound shall be dura.®flex, a two component, polymer modified, cementitious coating applied in accordance with the manufacturers recommendations, a.b.e.® Construction Chemicals (Pty) Ltd. The coating shall conform to the requirements of EMPA test 235’528, EMPA test 162’475/2 and UK Water Byelaws Scheme (WRc Listed). The compound shall have a resistance to positive pressure of 10 bar and a resistance to negative pressure of 4 bar.
dura.®flex is supplied in 15kg kits.
This product has a shelf life of 12 months if kept in a dry cool place in the original packaging. In more extreme conditions this period might be shortened.
dura.®flex powder is irritating to eyes, respiratory system and skin. Avoid inhalation of dust and wear suitable respiratory protective equipment.
dura.®flex liquid is not classified as dangerous. dura.®flex when mixed becomes highly alkaline. Wear suitable protective clothing, gloves and eye protection. For both components and mixed material avoid contact with skin and eyes. In case of contact with eyes or skin rinse immediately with plenty of water and seek medical advice.
This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® Construction Chemicals endeavours to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® Construction Chemicals has no direct or continuous control over where and how a.b.e.® Construction Chemicals’ products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® Construction Chemicals’ products, whether or not in accordance with any advice, specification, recommendation or information given by the company.
Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements. a.b.e.® Construction Chemicals has a wealth of technical and practical experience built up over years in the company’s pursuit of excellence in building and construction technology.