Hogs Head Brew House Extension – Installation of Proprietary Rafterline System
Project Overview
The proprietor of Hogs Head Brew House engaged Standard Patent Glazing Company with a simple design brief: “I would like to recreate a shopping arcade glazed roof structure I have seen in Halifax to accommodate customers in my new extension.”
Following this brief, we collaborated closely with the client and the steel contractor, Broadcliffe Fabrications Ltd, to bring the vision to reality. Once the concept was approved, we specified our Rafterline patent glazing system to integrate seamlessly with the steel rafter and hip frames designed by Broadcliffe Fabrications Ltd.
The structural steel design was complex due to the need to abut several existing buildings while incorporating hips and ridges to connect the extension. However, Broadcliffe Fabrications Ltd installed the structure with precision, and when we attended to survey the completed framework, the installation was seamless.
Design Considerations & Performance
The primary design objective was to maximise light transmission while mitigating solar heat gain. To achieve this, we specified a double-glazed unit configuration featuring:
- 6mm SKN 176ii Solar-Controlled Toughened Outer Panes: These provide a centre pane U-value of 1.0 W/m²K, a light transmission rate of 70%, and a solar G value of 0.37.
- Comparative Performance: Standard clear double-glazed units typically offer a centre pane U-value of 1.15 W/m²K, a light transmission of 78%, and a solar G value of 0.69. While the light transmission is reduced by just 8%, the solar gain is reduced by an impressive 46%, ensuring enhanced occupant comfort and reduced solar overheating.
To further enhance safety and ensure compliance with British standards, we incorporated an 8.8mm laminated inner pane with a safety classification of 1-B-1 to BS EN12600. When combined with our Skyline Box glazing bars, the system achieves a Class 2 assembly in accordance with CWCT TN66 & TN67, ensuring a secure and durable installation for both building users and maintenance personnel.
Testimonial ~ Chris Smith, Proprietor of Hogs Head Brew House
“I am absolutely delighted with the roof glazing solution provided by Standard Patent Glazing Company. The team took my initial vision and through close collaboration, turned it into a stunning reality. The Rafterline system seamlessly integrates with the steel framework and the performance of the glazing units has exceeded expectations. The balance of light transmission and solar control ensures a comfortable environment for our customers and the attention to detail in both design and installation has been outstanding. A huge thank you to the entire team for their expertise and professionalism throughout the project.”
