Gowercroft Joinery Limited

IFT Noise Reduction Test Report for LandVac Vacuum Glazing

ATI Wind Resistance Test Report for LandVac Vacuum Glazing

An independent study on Sustainable Windows. In order to find out exactly what impact our products have on the environment and how we compare to the window manufacturing industry as a whole, we commissioned a study with Dr. Stuart Walker CEng MIMechE at the university of Derby. We asked Dr Walker to find a credible way of measuring the environmental impact of our products, and also to run a comparison to other manufacturers. The research was to be totally independent and unbiased. The point of the experiment was to measure our own success in a genuine and honest way. We needed to know what we had achieved in our goal to make sure that our products really did support a sustainable process. In finding this out we could see any areas where we could improve our performance.

Winston Heritage Sliding Sash Window U-Value simulation report showing result of 1.2 W/(m2k)

Air and Water Permeability Test Report Summary: Tested Element: - Type: Timber Window - Opening Type: Outward - Dimensions: 720 x 1974 mm - Surface Area: 3.85 m² Air Permeability Results (EN 12207): - Classification: Class 4 (General Class Pressure) - Air Permeability: 0.56 m³/(h/m²) - Notes: Test passed with good performance. Water Tightness Results (EN 1027): - Classification: Class A9 (No water entry at 600 Pa) - Water Entry: No water entry observed, meeting Class A9. Resistance at Wind Load (EN 12211): - Classification: C3 (Sustained at 1800 Pa) - Deflection: Within acceptable limits, meeting Class C3. Safety Test (EN 12210): - Deflection: No significant deflection observed, meeting safety standards. Overall Observations: - The timber window demonstrated excellent performance in

Description and technical data on the Yale range of trickle vents