In places where I could not slightly overlap the edge then press it into place with a hand roller, I have gaps. In places where I had to slide the edges together to close the gap, it has separated some. In places where I could overlap then press it into place it is solid. Apparently over time the glue wants to move the product to its original place. I installed with the coach at 60-65 degrees and product was 70 (it was sitting in the S/B home for a month and I only moved the amount I installed that day).