We watched your video's to see if it was in our skill set to have a go as we have never done this before. I found them to be very helpful and gave us all the information needed. There were a few area's that we could have done better but all the same it turned out fine and stopped all the leaks on the roof. One thing I would say is that I didn't feel that there was enough resin for the 15m sq even though it was supposed to cover 20. I expect some loss was caused due to first time but still think it should be 15m sq on the resin quantities not 20. Overall very pleased with the price, product and information available and will definitely call on you guys again. Best Regards Steve Jeffery- Southern Counties Drilling Solutions LTD