IZOMAX® F-tec
IZOMAX® F-tec is a three-layer under-tile waterproofing membrane for ceramic and natural stone coverings. Both faces consist of polypropylene non-woven, with a core of modified low density polyethylene (LDPE) membrane. It protects floors and walls against substrate cracks and moisture migration.
Fields of Application
• Interior wet rooms with moderate exposure to non-pressurised water (classes W1-I and W2-I according to DIN 18534) — bathrooms, showers, toilets
• Beneath ceramic and natural stone coverings on floors and walls
• On concrete and screed surfaces requiring crack bridging
• In kitchens and laundry rooms
• In underfloor heating systems
• On plasterboard, aerated concrete and wood-based board substrates
• On the interior surfaces of covered balconies and terraces
Advantages
• At only 0.50 mm thick, it does not raise the level of the covering
• Bridges cracks; does not transfer substrate movement to the covering
• Tiling can start 24 hours after application
• Balances water vapour transmission
• Forms a complete system with inside corner, outside corner and collar components
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General Information |
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Material composition |
PP non-woven / modified LDPE membrane / PP non-woven |
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Appearance |
Grey three-layer membrane supplied in rolls |
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Thickness |
0.50 mm (± 0.1 mm) |
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Weight per unit area |
200 g/m² (± 20 g/m²) |
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Performance Data |
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Resistance to water pressure (EN 1928, Method B) |
≥ 1.5 bar |
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Burst pressure |
≥ 2.0 bar |
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Water vapour diffusion resistance, sd (EN 1931) |
≥ 75 m |
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Breaking load – longitudinal (EN ISO 527-3) |
270 N/50 mm |
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Breaking load – transverse (EN ISO 527-3) |
170 N/50 mm |
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Elongation at break – longitudinal / transverse (EN ISO 527-3) |
60% / 70% |
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Tear resistance – longitudinal (EN 12310-2) |
65 N |
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Tear resistance – transverse (EN 12310-2) |
110 N |
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Bonding strength (EN 1348) |
0.5 N/mm² * |
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Temperature resistance |
−30 °C / +90 °C |
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Chemical resistance |
Resistant to dilute acids, alkalis, salt water and chlorine |
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Application Data |
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Adhesive class |
Minimum class C2 tile adhesive to EN 12004-1 |
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Trowel notch (membrane bonding) |
6 × 6 mm |
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Joints |
Butt-jointed; covered with sealing tape |
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System components |
Inside corner, outside corner, floor collar, wall collar |
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Waiting time before tiling |
24 hours |
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Safety Information |
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Reaction to fire class (DIN 4102-1) |
B2 |
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Hazardous substances |
See SDS |
Bonding strength depends on the adhesive used; the minimum value is ≥ 0.2 N/mm². The stated technical values were obtained at +23°C ambient temperature and 50% relative humidity.