I Do NOT Recommend Cornerstone Construction. Cornerstone installed a new metal roof with snow rails, gutters, & GutterGlove Pro gutter guard panels on the house during the summer '18. When a winter storm dropped some heavy snow the beginning of December '18, the snow rails ripped off of the roof, the gutters tore from the gutter hangers & straps, some of the GutterGlove Pro panels flipped up like dams and others were ripped off of the house. No other house in the development had their gutters damaged or ripped from the gutter hangers and straps. I contacted Cornerstone Construction the day of the incident & sent pics. I spoke with GutterGlove Pro Corporate representatives, they stated they have GutterGlove Pro panels installed in heavy snow areas in the U.S. and Canada and they do not fail, and have NEVER failed, like they did in the pics I sent them. I also spoke with the Best Buy Metals store manager for the location where the metal roofing came from & he mentioned the snow rails were not installed correctly. So, two of Cornerstone’s suppliers said their products don’t fail as ours did, which leads me to believe that the products were not installed correctly. I gave Cornerstone ample opportunity (10 weeks) to correct & salvage this job by standing behind products purchased & company’s incorrect installations. By not replying or contacting with me tells me that the owner of Cornerstone Construction DOES NOT WARRANTY his company’s products, installations, or work.