SPIDI® Max passes CWCT Sequence B Testing

We put our SPIDI Max helping hand system through the rigorous CWCT Sequence B testing and pushing it even further with further cyclic wind testing, which throws a 1 in 50 year storm at the system – ensuring that every SPIDI system is not only developed to provide confidence in every connection, it is also proven and tested under the toughest real-world conditions.

CWCT-tested rainscreen systems give Architects, Contractors, and Façade Consultants peace of mind – guaranteeing quality, safety and regulatory compliant systems.

What testing did we do?

To ensure our helping hand system delivers industry-leading safety and performance for 2026 and beyond, we completed rigorous CWCT Sequence B Testing. This comprehensive assessment goes beyond theoretical calculations to provide third-party verification, via INITIVO, that our system can withstand the harshest real-world conditions.

Key performance areas tested include:

• Cyclic Wind testing: Proves that every panel and fixing in your rainscreen system can withstand the extreme pressure and turbulent suction of a 1-in-50-year storm by exposing full-scale mock-ups to repeated pulses of intense positive and negative loads.

• Watertightness (Static & Dynamic): Tests resistance to water penetration under increasing static pressure and under dynamic conditions that simulate wind-driven rain — including use of high-velocity airflow.

• Air Permeability: Measures how much air passes through the façade under both positive and negative pressures, indicating the ability of the system to minimise unwanted airflow and heat loss.

• Wind Resistance (Serviceability & Safety): Ensures your rainscreen stays safely attached and functional by first testing against a 1-in-50-year peak winds to prevent excessive bending and then pushing it to 1.5x over the "Safety" load to guarantee the panels will never blow off even in extreme, unpredictable gusts.

• Impact Resistance: Assesses how the system withstands both soft and hard body impacts, ensuring that panels, rails and fixings resist accidental strikes without compromising integrity or safety.

By achieving these standards, we provide architects and contractors with the confidence that our helping hand system is fully compliant with UK Building Regulations and the National Building Specification (NBS), ensuring long-term resilience and reduced project risk.

Summary and Classification of Test Results?

The following summarises the results of the tests carried out. For full details refer to Sections 6, 7, 8 and 9.

2.1 Summary of Test Results

What systems did we test?