We have now had our roof done for over 1 year and have just experienced one of the coldest winters in a long time, I am very pleased to report that it has been amazing.we had the work done in February 2017 and so was very pleased to be able to use our conservatory in the summer without it being uncomfortabley hot, then Autumn into the winter period was also a very comfortable experience too, Christmas Day lunch was very pleasant and a great family get together on Boxing Day. Then we had a very cold spell not so many weeks ago with lots is snow! and have been so impressed at how lovely and warm we have been, usually we have had to shut off this living space during the winter months but not this year!!! A great product and would highly recommend this to make the living space and all round year experience, well done