Liquid Applied Waterproofing – Brushed, Rolled, or Sprayed. Always Seamless.

Liquid applied waterproofing is a category of waterproofing systems supplied in liquid form and applied directly to the substrate by brush, roller, or spray. Once cured in-place, the liquid forms a continuous elastic membrane with no joints, no overlaps, and no weak points – a single seamless waterproof barrier.

Sheet membranes (like torch-applied bitumen or EPDM) are supplied as pre-fabricated rolls and welded or fastened on-site – meaning every roll has overlap joints. Liquid systems are applied as continuous coatings, so there are no joints at all. Liquid handles complex geometries better; sheet systems are faster on large flat areas with simple geometry.

For most UAE roofs, polyurethane (PU) liquid membrane is the default choice – it balances cost, flexibility, UV resistance, and 15–20 year service life. For premium long-life applications, polyurea spray. For budget projects, acrylic. For tanks and below-grade structures, cementitious-acrylic hybrid. We assess each project individually before recommending.

Yes – one of liquid waterproofing’s biggest advantages is that most systems can be applied over existing bitumen, screed, or aged membrane after proper surface preparation. SBS-modified bitumen liquid is particularly designed for this. This eliminates the cost and disruption of tear-off and replacement.

Service life varies by chemistry: acrylic 10–15 years, polyurethane 15–20 years, polyurea 15–25 years, SBS-bitumen 12–18 years, cementitious-hybrid 12–18 years. Actual longevity depends on UV exposure, foot traffic, substrate movement, and quality of installation. All Ofixotech projects include workmanship warranty.

Typical dry film thickness ranges from 1 mm to 3 mm depending on the system and application. Polyurethane and acrylic systems are usually applied at 1.5–2 mm total thickness across two coats. Polyurea waterproofing thickness is 0.8–1.5 mm. Cementitious-acrylic systems are typically 1–2 mm per coat, two coats minimum.

Yes – surface preparation is the most critical step in any liquid waterproofing installation. The substrate must be clean, dry, structurally sound, and free of contaminants. Cracks must be repaired, sharp edges rounded, and a system-compatible primer applied. Poor preparation is the leading cause of liquid waterproofing failure.

Cementitious-acrylic hybrid systems and certain polyurethane formulations are certified safe for potable water contact and are widely used for water tanks and reservoirs. Always confirm with the contractor that the specific product carries WRAS or equivalent potable-water certification before specifying.