Cembond M 947 is a flexible surface waterproofing system. CEMBOND 947-flex surface waterproofing is a sealing system for mineral surfaces. The waterproofing against water is based on the unique Cembond polymer technology. The Cembond polymer gives Cembond sealing slurries their outstanding surface waterproofing properties. The Cembond polymer reacts chemically with the cement, creating an organo-mineral polymer structure that has excellent strength and durability. Thanks to this cross-linking reaction, the Cembond sealing slurry also adheres to damp mineral substrates.
- Also suitable for damp substrates
- Polymer structure
- Vapor-permeable
- Increases sulfate resistance
- Protects building materials from salts
Waterproofing membranes made of CEMBOND 947-flex are highly flexible, organo-mineral films with excellent low-temperature flexibility. Cembond 947-flex is crack-bridging, but large cracks and joints must be secured separately with HydroFlex sealing tapes. The product is recommended as waterproofing under trafficable areas, for the internal waterproofing of concrete containers, and generally for surfaces prone to cracking. In a special formulation, M-947 can also be used as a waterproofing system for road surfaces on concrete bridges (“bridge deck membrane”) directly beneath mastic asphalt.
| Characteristics |
Reactive, organic-mineral 2-component system |
| Components |
2 (solid/powder component and mixing liquid) |
| Density |
Approx. 1.55 g/ml / fresh mortar |
| Mixing ratio A : B |
100 : 40 parts by weight |
| Dilution |
If necessary, with water. Maximum addition 10% |
| Consumption |
1.55 kg for 1 mm thickness per m2 |
| Working time |
90 minutes at 20°C |
| Crack bridging |
Up to 1000 µm (1 mm) |
| Minimum layer thickness |
2.5 mm |
| Diffusion resistance |
900 - 1100 (water vapor) |
| Pressurized water tightness |
Up to a maximum of 7 bar |
System accessories for Cembond M 947 flex – flexible sealing slurry for surface waterproofing
HydroBloc Si 709 – Siloxane concentrate for horizontal barriers; Seal Fix expansion mortar 930 for sealing injection boreholes; Silex Suspension 931 – application-optimized injection mortar for cavity filling
Packaging:
The material is sensitive to frost and must NOT be transported or stored at temperatures below 5°C.