When specifying external sheathing boards, product performance cannot be considered in isolation. Every building system is made up of multiple components working together, which is why compatibility testing is such an important part of the specification process. For architects, contractors and designers, understanding how products perform within complete wall systems can provide greater confidence when selecting materials for a project. At Klasse, we recognise the importance of this collaborative approach. That's why our sheathing boards are extensively tested alongside some of the UK's leading Steel Framing System (SFS) manufacturers.
The Importance of System Testing
Modern construction projects demand products that not only perform individually but also work effectively within wider wall and façade systems. Testing sheathing boards within realistic applications helps verify performance, identify compatibility across different construction methods and provide the evidence required to support specification decisions. As regulatory requirements continue to evolve, access to reliable test data has become increasingly important for project teams seeking to demonstrate compliance and performance
Working with Leading SFS Manufacturers

By testing with multiple manufacturers, we can provide greater assurance that our products perform effectively across a variety of construction applications.
Supporting Timber, Load-Bearing and Non-Load-Bearing Systems
Our testing programme covers a broad range of wall constructions, including:
- Timber frame systems
- Load-bearing through-wall systems
- Non-load-bearing through-wall systems
This approach helps ensure that specifiers and contractors have access to relevant performance data when selecting products for different project requirements.
Building Confidence Through Collaboration
Strong partnerships play an important role in delivering successful construction projects.
By collaborating with leading SFS manufacturers, Klasse is able to continually develop and validate solutions that meet the demands of modern construction. These partnerships help ensure that our products are supported by robust testing, technical evidence and practical application knowledge.
For specifiers, this means greater confidence in product selection. For contractors, it means access to tested solutions designed to support performance, compliance and project success.
Supporting Better Building Outcomes
At Klasse, we remain committed to providing a high-performance product range backed by comprehensive testing and technical support.
Our ongoing collaboration with leading SFS manufacturers reflects our commitment to helping architects, designers and contractors specify with confidence and deliver buildings that meet the highest standards of quality, safety and compliance.
To further support specification and compliance requirements, we maintain a comprehensive fire test matrix detailing the extensive fire testing carried out across our sheathing board systems. To learn more about our sheathing board range, testing programme, technical support services, or to request a copy of our fire test matrix, contact the Klasse team today.
sales@klassegroup.co.uk
01432 842 030

