1st fast service fast fit everything looked gd windows & door are good quality. fitting on the other hand is shocking gaps everywhere. been out number of times still no better. last engineer came out and actually said where these fitted in the dark.he noted all the issues without me telling him and HE is booked to come back hopefully that will be the end of it. Will be applying for compensation as its been 3 years of gaps and poor installed products so loss of heat and extra costs in heating to myself. do not recommend only went with them as we needed windows and it was 0% finance. price was OK in the end after being quoted 10k . Good job I had a local firm price 1st so I knew a figure to be close to.