SikaSwell A

SikaSwell® A – Hydrophilic Swelling Joint Sealing Profile

SikaSwell® A is a hydrophilic acrylic joint sealing profile designed to expand on contact with water, creating a reliable watertight seal in construction joints and penetrations.

Ideal for below-ground concrete structures, it provides a simple, cost-effective solution for preventing water ingress in critical areas.

Key Features & Benefits

• Hydrophilic technology – expands on contact with water to seal joints
• Reliable waterproofing – fills cracks, voids and irregularities
• Permanent performance – withstands wet and dry cycles
• High swelling capacity – up to ~150% volume increase
• Easy to install – quick application with adhesive system
• Versatile use – suitable for joints, penetrations and detailing
• Chemical resistant – performs in aggressive environments
• Cost-effective solution – reduces need for complex systems

Applications

SikaSwell® A is ideal for:

• Construction joint sealing in concrete structures
• Pipe and service penetrations through walls and slabs
• Sealing around steelwork and cable ducts
• Waterproofing connection joints and detailing areas

Used widely in basements, foundations, and water-retaining structures

Technical Overview

• Type: Hydrophilic acrylic sealing profile
• Swelling Capacity: ~150% (after 30 days in water)
• Swelling Pressure: Up to >10 bar (ideal conditions)
• Service Temperature: -20°C to +50°C
• Density: ~1.50 kg/L
• Available Sizes:
  • 20 × 5 mm (20 m roll)
  • 20 × 10 mm (10 m roll)
  • 20 × 25 mm (5 m roll)

Why Choose SikaSwell® A?

SikaSwell® A offers a simple yet highly effective waterproofing solution for construction joints. Its ability to expand and seal gaps automatically ensures long-term protection without the need for complex installation methods.

Frequently Asked Questions (FAQs)

❓ What is SikaSwell A used for?

It is used for sealing construction joints and penetrations in concrete structures to prevent water ingress.

❓ How does it work?

It expands when exposed to water, filling gaps and creating a watertight seal.

❓ Can it handle repeated wet and dry cycles?

Yes, it is designed to perform under continuous wetting and drying conditions.

❓ Is it suitable for high water pressure?

It can withstand water pressure up to 2 bar as standard applications.

❓ Can it be used for movement joints?

No, it is not suitable for movement joints—it is designed for static construction joints.

❓ Does it shrink when dry?

Yes, it can return to its original size when dry and expand again when exposed to water.

Downloads

Data Sheet