Sika Sikadur Combiflex
Sika Sikadur Combiflex
Sikadur-Combiflex SG System — High Performance Joint and Crack Sealing System
The Sikadur-Combiflex SG System is a versatile, high-performance joint and crack sealing system consisting of modified flexible Polyolefin (FPO) waterproofing tape bonded with Sikadur epoxy adhesives. It seals construction joints, movement (expansion) joints, connection joints and cracks, allowing variable and high levels of movement in one or more directions whilst maintaining a watertight seal. Elongation at break exceeds 650%.
Key Features
- Highly flexible — > 650% elongation at break for high crack and joint bridging ability
- Advanced adhesion, no activation on site required
- Suitable for dry and damp concrete substrates
- Good chemical resistance (ground water, seawater, sewage, lime/cement water)
- UV resistant
- Root penetration resistant (CEN/TS 14416)
- Plasticiser-free — long-term performance stability
- Hot air weldable
- Approved for contact with potable/drinking water (WRAS)
- Good resistance to ageing
Applications
- Tunnels and culverts
- Hydroelectric power plants
- Sewage treatment plants
- Basements and underground structures
- Water retaining structures
- Drinking water reservoirs
- Swimming pools
- Movement joints, construction joints, pipe penetrations, cracks
- Building components with expected differential settlement
System Components
FPO Waterproofing Tapes:
| Model | Description | Max. permanent elongation |
|---|---|---|
| SG-20 P / SG-20 M | 2.0 mm thick (P = plain, M = red middle strip) | < 25% of non-adhered tape width |
| SG-10 P / SG-10 M | 1.0 mm thick (P = plain, M = red middle strip) | < 10% of non-adhered tape width |
Sikadur Epoxy Adhesives: Combiflex CF Adhesive Normal/Rapid, Sikadur-31 CF Normal/Rapid/Slow, Sikadur-31 DW (drinking water)
Technical Data
| Property | Value |
|---|---|
| Tape material | Modified flexible Polyolefin (FPO) |
| Adhesive | Sikadur epoxy resin |
| Elongation at break | > 650% |
| Service temperature | -10 °C to +40 °C |
| Ambient application temperature | +5 °C to +40 °C |
| Substrate temperature | +5 °C to +30 °C |
| Chemical resistance | Ground water, soil, lime water, cement water, seawater, salt solutions, domestic sewage, bitumen |
| UV resistance | Yes |
| Root penetration resistance | Yes (CEN/TS 14416) |
| Drinking water contact | Approved (WRAS No. 1708503) |
Approvals
- Root Resistance CEN/TS 14416 (SGS, SKZ Test report No. 89643/09)
- Water Regulations up to 50 °C BS6920-1:2000 (WRAS Approval No. 1708503)
- Water pressure in joints PN-EN 1849-2, PN-EN 1850-2 (STUVA Test report No. 1640-KEBE-001)
