01942 717 100
01942 717 100
info@wbs-ltd.co.uk
Steel Frame Stone Wool Silicone Render System
The Wetherby Direct Fix Steel Frame System has been developed to allow the installation of A-rated Wetherby systems to a sheathed steel frame substrate. The direct fix application allows the system to be directly mechanically fixed with adhesive (where required) removing the need for a cavity and the cavity fire-stopping behind the A1 Stone Wool insulation. Suitable for use on a variety of project types such as schools, student accommodation and high-rise reclad projects, the system has proven incredibly popular since its launch in 2022.
Our A2-s1,d0 Stone Wool Silicone Render EWI system delivers durability, energy efficiency, and aesthetics. Engineered for the UK climate, it features Wetherby Silicone Render 4S for seamless integration with stone wool insulation, ensuring breathability and performance. Combining stone wool’s insulation with silicone’s weatherproofing, Wetherby sets a sustainable construction standard.*
Watch the Stone Wool Silicone Render System in Action…
You’ll unearth a treasure trove of expertise right at your fingertips by visiting our channel and hitting that subscribe button.
Colour Availability
Our Stone Wool Silicone Render System is available in various colours across Silicone, Acrylic, Four Seasons, and Mineral Render. With a variety of vibrant and durable options, our silicone renders are designed to enhance the aesthetic appeal and longevity of your projects. Discover our extensive colour range by downloading our brochure below.
Approved Finishes
Our Stone Wool Silicone Render System comes in a variety of finishes, below is an example of textures available.
Wetherby Stone Wool Silicone Render System Components
Benefits of our Stone Wool Silicone Render System
The Stone Wool Silicone Render system is a revolutionary solution, designed to elevate your projects. This advanced insulation system provides many benefits going beyond traditional methods, offering unmatched performance, sustainability, and cost-effectiveness.
Technical Information
Specifying an External Wall Insulation system that is suitable for your project can be a challenging practice. Our technical team are on hand to provide detailed job specific specifications and any technical assistance you may require.
| Fire Classification | A2-s1, d0 to EN 13501-1 |
| Design Life | 30 years |
| Impact Resistance | Category II |
| Hygrothermal / Freeze / Thaw Testing | Pass |
| Sheathing Board | Fibre Cement Board (BS EN 12467) CPB (BS EN 12467 / BS EN 634-2) Ply (BS EN 313-1) OSB (BS EN 300) |
| Stone Wool Thermal Values Conductivity | 0.036 W/(m²k) |
| Lambda value | 50mm+ = 0.036 30-40mm = 0.038 |
| Thicknesses Available | 30mm – 250mm |
| Finish Options | Silicone Render available in a variety of finishes, each with a range of colours |
Typical U-Values
Wetherby Stone Wool insulation offers a 0.036 W/(mK) K value, requiring just 100mm thickness to meet UK refurbishment property U-value standards in the majority of cases.
Technical Data
Technical Drawing Set
Our technical drawings are currently being updated. To request the latest version contact; Technical Helpline 0800 1073299 or technical@wbs-ltd.co.uk
Operations & Maintenance Manual
KIWA Certifications BAW-21-201-S-A-UK
Specification with NBS
*Some new build insurers such as NHBC, Premier Guarantee and LABC insist on a drainage cavity on new build housing projects. Therefore a Wetherby cavity rail system would be the best solution. Please see the links below to view suitable Wetherby cavity rail systems.
Product Information
At the core of our Stone Wool Silicone Render system lies Rockwool insulation, providing outstanding thermal performance, unparalleled breathability and superior acoustic properties in comparison with other insulants on the market. Stone Wool is classified as A1 non-combustible as an individual product.
- Outstanding thermal and acoustic properties
- Non combustible
- Easily cut and shaped
- Can be installed to flat & curved surfaces
- Open cell structure allows the façade to breath
Wetherby Four Seasons (4S) Silicone Render confidently tackles the UK climate’s challenges, excelling in lower temperatures. It creates a formidable shield against rain damage, reducing wash-offs significantly. With a myriad of additional benefits, it stands as the premier choice for enduring performance in any weather condition.
- Rapid rainproof status
- High humidity resistance
- Algae and mold prevention
- Wide application range
- Exceptional water-repellent qualities
- Extended application window
Case Studies
Discover real-world examples where challenges were met with innovative solutions, and obstacles transformed into opportunities.
Apollo Apartments, Bristol
Read More
Premier Inn, St Helier
Read More
Croxley Danes School
Read More
Bath Court, Birmingham
Read MoreRelated EWI Systems
We have developed a range of EWI systems ideal for use with various construction methods, view the other systems.
Contact the Team at Wetherby Building Systems
We understand that embarking on a construction project is a significant endeavor, and we’re here to support you every step of the way.
If you have any inquiries, require additional information, or would like to discuss your specific project needs, please don’t hesitate to reach out. Our dedicated team of experts is ready to listen, collaborate, and provide tailored solutions.
