Watertight concrete plays a critical role in creating long lasting and durable structures that resist water penetration. True water impermeability depends not only on the concrete mix itself but on a complete system that limits water permeability through the concrete, the joints, the installation parts and any cracks. By combining advanced water resisting admixtures with engineered joint sealing solutions, the Sika® Watertight Concrete System provides reliable waterproofing for basements, retaining walls, lift pits, concrete facades and water retaining structures. Sika® Watertight Concrete complies with BS 8102:2009 Type B Construction, ensuring that structures meet recognised standards for protection of below ground structures against water. Through reduced capillary porosity, improved impermeability and a complete system-based approach, the Sika® Watertight Concrete System helps deliver dependable protection for the construction of watertight structures.
Advantages of the Sika® Watertight Concrete System
- Increased water impermeability through reduced capillary porosity
- Reliable watertightness achieved through a complete system approach
- Time saved at design and construction stages due to simplified detailing
- Cost effective compared to alternative waterproofing methods
- Delivers maximum usable internal area for the occupier
- Improved durability and long-term protection for below ground structures
- Enhanced performance through the combined use of waterproof concrete and joint sealing solutions
- Consistent quality through the use of water resisting admixtures, superplasticisers and pore blockers
- Greater certainty for owners, designers, contractors and end users
Sika® Watertight Concrete System Components
Sika® Watertight Concrete Powder is a combined water resisting and high range water reducing/superplasticising admixture that has been secially formulated to produce high quality watertight concrete.
Sika® Waterbar are used to waterproof expansion (movement) and construction (no-movement) joints.
SikaSwell® profiles and sealants swell in contact with water to seal construction joints (non-movement joints), service entries and penetrations.
Sika® Antisol®-3 E is a spray-applied curing compound to prevent early moisture loss.
Sikadur-Combiflex®-SG is a high performance joint and crack sealing system.
Our Range of Admixtures for Watertight Concrete
Our Range of Watertight Joint Sealing Products
FAQ
Watertight concrete is concrete that has been specifically designed to prevent water ingress or egress, using water resisting admixtures to enhance its impermeability. It is ideal for structures exposed to water pressure, such as basements, retaining walls, concrete facades and water tanks.
Sika® Watertight Concrete Powder is a combined water resisting and superplasticising concrete admixture. It reduces water absorption and penetration while enhancing the workability and strength of the concrete.
Sika®-1+ is a liquid water resisting admixture that reduces water absorption and penetration to produce high quality watertight concrete. It’s used in waterproofing applications such as tunnels, water retaining structures, lift pits and below-ground structures where a watertight finish is essential.
Sika® Antisol®-3 E is a curing agent that forms a thin film on freshly placed concrete to reduce moisture loss. Proper curing with Sika® Antisol®-3 E helps prevent surface cracking, reduces shrinkage and ensures the concrete reaches its full watertight potential.
Watertight concrete admixtures reduce water ingress, increase durability and lower the risk of cracking.
The right choice depends on your structure’s exposure, concrete mix design and waterproofing grade required. Contact our technical team here for expert guidance on selecting the best combination of products for your watertight concrete system.
