Sika waterproofing solutions are high-performance, cement-based or polyurethane-based coatings developed to provide long-lasting protection against water penetration in various construction elements. Sika’s waterproofing products are suitable for use in both residential and commercial structures and are ideal for rooftops, wet areas, basements, and water tanks.
Main Uses
Roofs and balconies
Bathrooms, kitchens, and wet rooms
Retaining walls and basements
Water tanks and reservoirs
Swimming pools
Foundation protection
Concrete and masonry surfaces
Popular Sika Waterproofing Products
Product Name
Type
Key Feature
Application Area
SikaTop® Seal-107
Cementitious 2-component
Flexible and brush-applied coating
Bathrooms, tanks
Sika® RainTite Kit
Acrylic-based waterproofing
Easy to apply and UV-resistant
Roofs, balconies
Sikalastic®-1K
One-component polymer modified
Crack-bridging and waterproof
Foundations, terraces
Sika® SealTape
Elastic sealing tape
Waterproof joint sealing
Wall-floor joints
Technical Specifications Example (SikaTop® Seal-107)
Property
Value
Appearance
Component A (liquid): White, Component B (powder): Grey
Mixing Ratio
A:B = 1:4 (by weight)
Density
~1.9 kg/L (mixed)
Application Method
Brush or roller
Pot Life
~30–40 minutes
Waterproofing Class
Positive and negative side
Coverage
~2 kg/m² per coat
Packaging
Typically 25 kg kits (5 kg A + 20 kg B)
Shelf Life
12 months in unopened packaging
Advantages
Excellent adhesion to concrete and masonry
Waterproof and weather-resistant
Resistant to positive and negative water pressure
Easy to mix and apply
Can be overcoated with tiles or paints
High flexibility (some variants)
Application Guidelines
Surface Preparation:
Clean the surface, repair cracks, and remove loose materials.
Mixing:
Mix components A and B thoroughly until homogeneous.
Application:
Apply first coat using a brush or roller. Allow it to dry before applying the second coat.
Curing:
Protect from direct sunlight and moisture until fully cured.
Safety Instructions
Use personal protective equipment (gloves, goggles)
Ensure good ventilation during application
Store in dry, shaded areas away from heat and moisture
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