LIQUID FOIL Waterproof Tanking Membrane – Aqua Build Bathroom & Shower Seal
LIQUID FOIL Waterproofing Membrane is a ready-to-use, one-component elastic sealing compound for long-lasting waterproofing of walls, floors, and ceilings. This 15kg and 7.5kg Aqua Build system is designed for demanding applications such as bathrooms, showers, wet rooms, terraces, balconies, retaining walls, and even buildings sunk into the ground.
It is especially effective as insulation under tiles on plasterboard, gypsum boards, and tile backer boards. Suitable for concrete, plaster, and wood, LIQUID FOIL forms a flexible, frost-resistant waterproof layer that seals hairline cracks and protects against water damage.
Key Benefits
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Heavy-duty 15kg waterproofing solution for large projects
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Ideal for bathrooms, wet rooms, showers, terraces, balconies, and garages
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Excellent adhesion to gypsum board, plasterboard, concrete, plaster, and wood
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Fills hairline cracks in substrates
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Prevents water penetration and frost damage
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Reduces risk of tile cracks caused by thermal expansion
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Easy two-coat brush-on application
How to Apply
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Ensure the surface is clean, sound, and free from dust, grease, or paint.
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Fill cracks and holes before application.
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For porous substrates, apply Deep Primer Pro or Acrylic Primer.
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Reinforce corners and joints with Aqua Build Waterproof Tape.
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Mix well, then apply two coats using a brush. Wait ~3 hours between coats.
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Allow 24 hours before tiling and 7 days before water exposure.
Technical Details
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Appearance: Blue semi-liquid putty
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Drying time: ~3 hours per coat, full strength after 3 days
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Tile application: Minimum 24 hours after last coat
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Water exposure: Safe after 7 days
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Density: ~1.5 g/cm³
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Coverage: ~1.1 kg/m² (2 coats, 1mm thickness)
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Storage: 18 months in sealed original packaging
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Application temperature: +5°C to +30°C
