I have a steel roof and have had a number of water leaks due to ice dams, general maintenance and caulking deterioration. Vand S's sister company, Riemersma Roofing has diagnosed and repaired leaks due to caulking deterioration, bolt grommet wear, boot replacement and gutter repair and replacement. When I had a specialized request to install heating cables to melt ice dams on a steeply sloped section of roof, Mark from Riemersma suggested a unique installation option -- installing the cables underneath the steel sheeting rather than on top where I had experience with snow slides pulling them off. This technique worked like a charm last winter and I retired my snow rake!! Mark has always been honest, very competitive price-wise, on-time and within budget every time. I highly recommend Riemersma Roofing for any roofing needs.