Avoid at all costs. This is the second time we've used newglaze but this time we also got flat roofs replaced along with replacement windows. Now have a leak between where our flat roof meets the pitched roof due to improper installation & delay tactics are now being used to prevent uncovering & repair works being done. Even after having been a building inspector for over a t years & knowing which parts of the installation are wrong, they still won't listen & often come across as condescending & rude. Have also had to call them out on multiple occasions to replace faulty window and handle locks. Would give 0 stars if I could