There are a huge number of windows and doors on the market, and finding the right ones can be very problematic. Aesthetics play as big a part as overall performance and price, and over the years PYC have tried and tested a variety of manufacturers – with mixed results. Now we are happy to use and supply the Green Building Store’s range of Performance, Ultra, Progression and the more traditional Sliding Sash. Specifying the Progression and Ultra on several of our recent projects gave us great confidence in the quality and performance of the range. The u-values are as low as 0.68W/m²K, with Passive House certification for 2 of the range, all with a large choice of colours and finishes.  We can work with you to overcome any tricky designs and find the right windows and doors to match your building – in both looks and performance.