Movement Joints/Expansion Joints

UKFF Solutions specialises in the design and installation of movement and expansion joint systems for a wide range of applications.

The most suitable detail is determined by several factors, including the expected movement, foot traffic, temperature, joint size, substrate type and surrounding materials.

We have extensive experience installing movement joints, particularly where waterproofing membranes are applied over the joint. Correct installation is essential, as movement joints must accommodate structural movement while maintaining a watertight seal to prevent water ingress.

As specialist waterproofing contractors, we ensure our waterproofing systems remain fully bonded, flexible and capable of moving with the structure without compromising performance.

Our movement joint systems are designed to accommodate movement between different construction materials, such as concrete and steel, reducing the risk of stress, tearing or damage to the waterproofing membrane and providing long-term protection.

If a flexible waterproofing system is not used over a movement joint, several issues can arise:

Cracking and Tearing

Without a flexible system, the membrane may not accommodate the movement at the joint, leading to cracks or tears in the waterproofing layer.

Water Ingress

Cracks or tears can allow water to penetrate through the membrane, causing leaks and potential damage to the underlying structure.

Reduced Durability

Rigid waterproofing systems are less able to withstand the stresses caused by movement, which can significantly shorten the lifespan of the waterproofing.

Structural Damage

Water ingress and mechanical stress can lead to corrosion of reinforcement, deterioration of substrates, and overall structural weakening.

Increased Maintenance and Repair Costs

Failure to accommodate movement increases the risk of damage, leading to higher ongoing repair and maintenance expenses.

Using a flexible waterproofing system designed for movement joints is essential to maintain the integrity, waterproofing performance, and longevity of the structure.

The images above demonstrate the installation of a specialist movement joint detail before the waterproofing membrane is applied. This is one of the most important stages of the waterproofing process, ensuring the system remains watertight while allowing the structure to move naturally.

Key features of the system include:

Flexible waterproofing tape installed over the joint to accommodate expansion and contraction.
Watertight protection that prevents water ingress without restricting movement.
Seamless membrane application over the tape to create a fully bonded waterproofing system.
Long-term durability by reducing the risk of cracking, tearing and membrane failure.
Professional installation carried out with precision to ensure reliable performance throughout the life of the structure

This combination of specialist detailing and high-performance waterproofing provides a durable solution that protects the structure while allowing movement where it matters most.