We moved to Coaldale in July of 2004 from Medicine Hat and knew that the roof would need to be replaced in the next year or so. We had seen Interlock at the Home and garden show in Medicine Hat in 2003 & 2004. We also looked at two of the houses that Interlock had done in Medicine Hat. We got Brad to come to our house at our convenience to give us the whole demonstration. After comparing cost, warranty, value, weight, and looks of the Interlock compared to asphalt, and tiles, we decided on Interlock. You’re probably asking yourself, why Interlock? We liked the idea of never having to replace the roof again, the lifetime (transferable) warranty, we absolutely love the aged copper colour that we chose. Installation took four days that is for a thousand square foot home and a double car garage. The installer was friendly and courteous. When I had to make the decision of taking the gutters off or leaving them on, he explained all the pros and cons, so I could make my decision. He cleaned up after each day was done, and at the end he hauled all the garbage to the dump. The financing with Interlock was done without headaches. All we had to do was fax a few papers to the bank and everything was done. Considering that the installation was done while my husband was out of town, I felt at ease during the whole process. I would recommend Interlock to anyone with hesitation.