ordered the kit to replace a bitumen felt roof, gave the measurements on the site and everything was worked out for me. paid for kit and it arrived pretty quickly. on checking the invoice I was short of a large tin of resin and some adhesive. when I informed the company they were quick to help . Only quibble I had was the courier said it had delivered the resin and I felt as I was not believed. The company contacted me again and said the missing items may have been delivered to a previous delivery so they resent my missing items . apart from this ,the kit and service were great and everything went just like the instructional videos explained. Highly recommend the product and company