as 0.85 W/m2K
or supply only
Choose from a wide
range of colours
Part Q compliant and
Secured by Design options
Our PERFORMANCE triple glazed windows & doors combine the beauty of natural FSC® timber with high energy efficiency.
PERFORMANCE is Green Building Store’s cost-effective range for retrofits and low energy newbuild projects. With ultra low U values and a range of designs and styles, our PERFORMANCE range will enhance your project at a competitive price.
- U value as low as 0.85 W/m2K
- FSC® timber
- Part Q compliant and Secured by Design options
- Triple glazed as standard, with double glazing available on request