Waterproofing & Painters Cape Town

22/01/2026

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12/01/2026

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30/12/2025

The Advantages of Using Sika® Combiflex® and Sikadur®-31 DW for Expansion Joints

Expansion joints are essential components in concrete and building structures. They allow for movement caused by temperature changes, shrinkage, vibration, and structural loading. If these joints are not correctly sealed and waterproofed, they become one of the most common sources of leaks, concrete deterioration, and long-term structural damage.

One of the most proven and reliable solutions for waterproofing expansion and movement joints is the use of Sika® Combiflex® in combination with Sikadur®-31 DW. This system is widely used in residential, commercial, and industrial construction due to its durability, flexibility, and performance under demanding conditions.

Why Expansion Joints Require Specialized Waterproofing?

Unlike static cracks, expansion joints are active. They continuously open and close over time. Traditional sealants, coatings, or cement-based products often fail because they cannot accommodate repeated movement or long-term exposure to moisture.

A proper expansion joint waterproofing system must:

1. Remain flexible over time

2. Provide a permanent watertight seal

3. Withstanding mechanical stress and movement.

4. Resist chemicals, moisture, and environmental exposure

This is where the Sika® Combiflex® system excels.

Key Advantages

1. High Flexibility and Movement Capability

2. Excellent Waterproofing Performance

3. Chemical and UV Resistance

4. Versatile Application

Why Sikadur®-31 DW Is Essential

1. Exceptional Adhesion

2. Waterproof and Moisture Tolerant

3. High Mechanical Strength

4. Approved for Water-Related Structures

The Power of the Combined System

When used together, Sika® Combiflex® and Sikadur®-31 DW create a complete expansion joint waterproofing solution:

Sikadur®-31 DW provides strong, permanent adhesion

Sika® Combiflex® absorbs joint movement and deformation

The system delivers long-term waterproofing with minimal maintenance

Conclusion 

For Projects where movement, moisture and longevity are critical, this system remains one of the most effective expansion joint waterproofing solutions available today. 

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12/12/2025

The work year of 2025 is almost over. Thank you to each customer & Team member that made this year Special. It wasn't the easiest of years and we as a company faced quite a few setbacks but we kept pushing and got through it together. 2026 here we come.

28/11/2025

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24/11/2025

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10/11/2025

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20/10/2025

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09/10/2025

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14/08/2025

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31/07/2025

24/06/2025

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