Avoid at all costs. Shoddy workmanship and appalling installation. Gaps around windows and frames, sliding door that won't open, gaps in the sight lines of the patio doors that let wind and insects through, gasket that doesn't go all round the window, window that catches on the frame when you open it, dent in the frame where they hammered it in, doesn't meet Building Regs U-value. I spent £15,000 on windows and sliding doors and after 10 months and 3 revisits that took an age to get sorted they are now ignoring my emails and letters so I have instructed a solicitor. Please go elsewhere.