Kuniseal C-31 DS is a self-adhesive, swellable bentonite waterstop used to help prevent water ingress through cast-in-situ concrete construction joints.

The flexible waterstop conforms to irregular concrete surfaces and can be installed in horizontal and vertical construction joints and around pipe penetrations. Its delayed swelling action provides additional tolerance to normal site weather before the second concrete pour.

Contact Safari Group for current pricing, availability and technical advice from our Canning Vale, Perth team.

Where Kuniseal C-31 DS Is Used

Kuniseal C-31 DS is designed for waterproofing concrete construction joints and penetrations. Typical applications include:

• Horizontal and vertical concrete construction joints
• Foundation and wall-to-slab joints
• Pipe and service penetrations
• Water tanks and other water-containing structures
• Joints with irregular concrete surfaces
• Marine applications where permitted by the project specification and current technical data sheet

Kuniseal C-31 DS should only be used in applications permitted by the manufacturer’s current technical documentation and the project specification.

Key Benefits

• Self-adhesive backing for easier positioning and installation
• Flexible profile that conforms to irregular concrete surfaces
• Easy to shape around corners and pipe penetrations
• Swells when exposed to water to help seal the joint
• Delayed swelling helps provide greater tolerance to normal site weather
• Suitable for horizontal and vertical construction joints
• Supplied in a convenient preformed strip

Always follow the current Kuniseal technical data sheet, approved project details and installation requirements.

Kuniseal C-31 DS Installation Overview

1. Ensure the concrete surface is clean, sound and free from loose material, dirt, oil and standing water.

2. Position the waterstop continuously along the construction joint.

3. Press the self-adhesive strip firmly onto the prepared concrete surface.

4. Butt-join adjoining lengths to create a continuous waterstop without gaps.

5. Form the strip closely around corners and penetrations.

6. Maintain the minimum concrete cover specified in the current technical data sheet.

7. Protect the installed waterstop from standing water, running water and premature hydration before the concrete pour.

8. Inspect the waterstop before pouring concrete and repair any gaps, displacement or damage.

This overview is general information only. Always follow the current Kuniseal C-31 DS technical data sheet, project specification and approved construction-joint details

Frequently Asked Questions

What is Kuniseal C-31 DS?

Kuniseal C-31 DS is a self-adhesive bentonite waterstop designed to help prevent water passing through concrete construction joints. It swells when exposed to water, helping to seal the joint.

Where can Kuniseal C-31 DS be used?

It is suitable for approved horizontal and vertical concrete construction joints, foundations, and pipe or service penetrations. Always confirm suitability against the current technical data sheet and project specification.

Is it suitable for expansion joints?

Kuniseal C-31 DS should not be used in expansion or movement joints unless specifically approved by the manufacturer or project engineer.

How is Kuniseal C-31 DS installed?

Apply the strip continuously to a clean, sound concrete surface. Butt adjoining lengths firmly together without gaps and maintain the concrete cover specified in the current technical data sheet.

What happens if it gets wet before the concrete pour?

Protect the installed waterstop from standing or running water. If it swells, moves or becomes damaged before the pour, check the technical data sheet or contact Safari Group before proceeding.

Is Kuniseal C-31 DS available in Perth?

Contact Safari Group in Canning Vale for current pricing, Perth stock availability, technical information and delivery options.

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