CWCT Sequence B Testing

safety, resilience, and reliability in all conditions

At Sotech, façade performance is about more than just appearance – it’s about safety, resilience, and reliability in all conditions. That’s why our rainscreen cladding systems undergo CWCT Sequence B testing, independently verified by UL Solutions, a global leader in safety science and testing.

This rigorous testing gives architects, developers, and contractors confidence that our systems meet and exceed real-world performance expectations – especially in the face of challenging UK weather conditions.

WHAT IS CWCT Sequence B Testing?

CWCT (Centre for Window and Cladding Technology) Sequence B is a comprehensive series of tests designed to assess the performance of curtain walling and rainscreen cladding systems under simulated environmental conditions.

When conducted by an independent body like UL Solutions, the testing provides third-party assurance that the systems will remain airtight, watertight, and structurally sound under:

Prolonged water exposure
Cyclic wind pressure (positive and negative)
Air pressure differentials
Dynamic wind loads

Unlike basic rainscreen system checks, CWCT Sequence B goes further – offering a realistic and repeatable simulation of real-world weather events, including wind-driven rain and structural movement.

LINK HERE

What are the benefits

of CWCT Sequence B Testing with UL Solutions

Performance Confidence

Ensures the system works under the most demanding conditions — not just in theory, but in practice.

REDUCED RISK

Detects weak points and potential failure areas early, avoiding costly remedial works post-installation.

REGULATORY ALIGNMENT

Supports compliance with key UK building codes and design guidance, especially for high-rise or high-risk buildings.

CREDIBILITY THROUGH CERTIFICATION

Third-party reports from UL Solutions carry weight across the industry — adding value in tenders and specifications.

Future-Proofing FaCade Design

Helps futureproof your building envelope as climate patterns shift and performance expectations rise.