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ARDEX X 77 Standard White – MICROTEC® Fibre Reinforced Flexible Adhesive
ARDEX X 77 Standard White is a premium, MICROTEC® fibre-reinforced, cement-based tile adhesive developed for high-specification architectural projects and precision-led installations. Its extended open time of up to 60 minutes, combined with outstanding slump resistance, enables accurate fixing of large-format and light-coloured tiles on both walls and floors.
Formulated specifically for contemporary surface materials — including fully vitrified porcelain, low-porosity slabs, glass and porcelain mosaics, and terrazzo — the white formulation is particularly suited to translucent, light-toned, and decorative finishes. ARDEX X 77 complies with BS EN 12004 C2 TE S1, classifying it as an improved, reduced-slip, extended open time adhesive with deformability for demanding substrates and service conditions.
Suitable for interior and exterior use, including swimming pools, spa environments, wet rooms, and underfloor-heated floors, ARDEX X 77 develops rapid early strength, allowing foot traffic and grouting from approximately 90 minutes, with full loading achievable after 24 hours.
Key Advantages
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MICROTEC® fibre technology for enhanced bond strength and dimensional stability
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Rapid setting performance — walk-on and grout from 90 minutes
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Advanced double-T slump resistance for precise large-format wall installations
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Ideal for porcelain, vitrified tiles, mosaics, glass tiles, and terrazzo
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High yield — approximately 5.5 m² at 3 mm
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Suitable for swimming pools and permanent water immersion
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Rated for internal and external use, including underfloor heating and wet areas
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Designed for professional specification and premium fit-out applications
ARDEX X 77 Standard White combines refined aesthetic compatibility with engineering-grade performance, making it the preferred adhesive where visual clarity and installation integrity are equally critical.
| Specification | Details |
|---|---|
| SKU | ARDEX-X77W |
| Colour | White |
| Bag size | 20 kg |
| Mixing ratio | 20 kg : 8.5 L water |
| Weight of fresh mortar | Approx. 1.5 kg/L |
| Working time (20 °C) | Approx. 3 hours |
| Fixing time (20 °C) | Up to 60 minutes |
| Adjusting time (20 °C) | Approx. 30 minutes |
| Open time | Approx. 60 minutes |
| Slip resistance | < 0.5 mm |
| Tensile adhesion strength | > 1 N/mm² (all test conditions) |
| Transverse deformation | S1 (≥ 2.5 mm and < 5 mm) |
| Application thickness | 1 – 6 mm |
| Coverage | Approx. 8 m² per 20 kg (8 × 8 mm trowel) |
