Bathroom & Kitchen Waterproofing

Summary:

Bathroom and kitchen waterproofing materials include cementitious waterproofing mortars, flexible waterproofing coatings and specified epoxy-resin systems. Products differ in flexibility, positive or negative water-pressure capability, substrate, subsequent tiling and application area; select by project detail and the latest technical data.

21 products

Summary:

Bathroom and kitchen waterproofing materials include cementitious waterproofing mortars, flexible waterproofing coatings and specified epoxy-resin systems. Products differ in flexibility, positive or negative water-pressure capability, substrate, subsequent tiling and application area; select by project detail and the latest technical data.

Selection guide

  • General and specialist cementitious waterproofing: Optimix WP515 is a General waterproofing slurry and WP513 is Waterproof Pro slurry. Product names do not establish suitability for every substrate or exposure.
  • Different flexibility classes: Optimix WP533 is a Semi-Flexible waterproofing slurry and WP568 is a Flexible waterproofing slurry. Distinguish them by substrate, location and system requirement.
  • Other waterproofing systems: The collection also includes Sika, Sika Ronacrete, Fosroc, Mapei, Weber, Ardex and other specified products. One-component, two-component, cementitious and epoxy-resin systems are not interchangeable.
  • Checks before application: Confirm substrate preparation, reinforcement at corners and penetrations, primer or pre-dampening, coating direction, curing, water testing and subsequent tiling requirements.

Do not apply a fixed number of days to the curing or testing of every product. Coat number, thickness, drying, curing and water-testing arrangements must follow the individual technical data, site environment and project specification.

Brands and product ranges

This collection includes Optimix, Sika, Sika Ronacrete, Fosroc, Mapei, Weber and Ardex, among other brands. Most models are typically in stock; please enquire about individual products.

Not Sure Which to Choose? These Guides Will Help

樓上樓下滲水常見源頭示意圖:上層浴室防水層破損或喉管漏水,水經樓板滲至下層天花形成水漬

Water Seepage from the Flat Above? A Guide to H...

From 16 July 2026 the Joint Office runs a new seepage investigation procedure: an Advisory Repair Notice within ~14 working days, 28 days to self-repair. This guide covers the new...

Water Seepage from the Flat Above? A Guide to H...

From 16 July 2026 the Joint Office runs a new seepage investigation procedure: an Advisory Repair Notice within ~14 working days, 28 days to self-repair. This guide covers the new...

彈性防水英泥 vs 英泥寶英泥沙防水:選擇最佳浴室防水材料

Flexible Waterproof Cement vs Bonding Agent: Ch...

Compare flexible waterproof cement coatings with polymer bonding agents (SBR/EVA additives) for bathroom, kitchen, and rooftop waterproofing. Learn when to use each type and browse recommended products from Weber, Sika,...

Flexible Waterproof Cement vs Bonding Agent: Ch...

Compare flexible waterproof cement coatings with polymer bonding agents (SBR/EVA additives) for bathroom, kitchen, and rooftop waterproofing. Learn when to use each type and browse recommended products from Weber, Sika,...