Description
SikaSwell® S-2 – Hydrophilic Swelling Joint Sealant for Concrete
SikaSwell® S-2 is a one-component polyurethane hydrophilic sealant designed to expand on contact with water, creating a watertight seal in construction joints and penetrations.
It is used both as a stand-alone joint sealing solution and as an adhesive for SikaSwell® profiles, ensuring reliable waterproofing in concrete structures.
Key Features & Benefits
- Hydrophilic sealant – expands on contact with water
- 1-part polyurethane system – easy and fast application
- Versatile use – sealant and adhesive in one product
- Permanent water resistance – performs through wet/dry cycles
- Optimised expansion rate – controlled swelling performance
- Excellent adhesion – bonds to a wide range of substrates
- Economical solution – reduces need for complex systems
- Compatible with SikaSwell profiles – complete waterproofing system
Applications
SikaSwell® S-2 is ideal for:
- Construction joint sealing
- Pipe and steel penetrations through walls and slabs
- Sealing around cable ducts and service entries
- Bonding SikaSwell® A and SikaSwell® P profiles
- Waterproofing detailing in concrete structures
Technical Overview
- Type: 1-part polyurethane hydrophilic sealant
- Colour: Oxide red
- Density: ~1.24 kg/L
- Swelling Capacity: Up to ~200% (in water over time)
- Swelling Pressure: Up to >10 bar (ideal conditions)
- Service Temperature: -20°C to +50°C
- Skin Time: ~60 minutes
- Curing Rate: ~2 mm per 24 hours
- Packaging: 300 ml cartridges / 600 ml unipacs
Why Choose SikaSwell® S-2?
SikaSwell® S-2 provides a simple yet highly effective waterproofing solution for joints and penetrations. Its ability to expand and reseal repeatedly ensures long-term protection, making it ideal for critical below-ground structures.
Frequently Asked Questions (FAQs)
❓ What is SikaSwell S-2 used for?
It is used for sealing construction joints and penetrations and for bonding SikaSwell profiles.
❓ How does it work?
It expands when exposed to water, sealing gaps and preventing water ingress.
❓ Can it be used on its own?
Yes, it can be used as a stand-alone sealant or with SikaSwell profiles.
❓ Is it suitable for movement joints?
No, it is designed for non-moving construction joints only.
❓ What pressure can it withstand?
It is recommended for water pressures up to 2 bar in standard applications.
❓ Does it shrink when dry?
Yes, it returns to its original size when dry and expands again when exposed to water.
Downloads
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Security
You may also be interested in
Recently viewed
What Our Customers Say