I put Certainteed windows in my house made by Viwi...

I put Certainteed windows in my house made by Viwinco window co. . in 2007 . Having problems with them now 2017 & 2018 . Neither company are standing by them . One is passing the buck to the other . Viwinco made the windows there fore I believe they should stand by them . Its call take responsibility for what you made. I'm a Carpenter Contractor & at times do sub work for a Kitchen company . If I make a mistake I don't expect the Kitchen Company to fix it . I fix it at my cost . Viwinco made the window . Viwinco should be responsible .