About Us - Mainstream Home Improvement We believe once a homeowner joins our growing family of customers, it's our responsibility to make them feel important throughout the entire process. We truly want them to have a great experience with We believe once a homeowner joins our growing family of customers, it's our responsibility to make them feel important throughout the entire process. We truly want them to have a great experience with our company. Each homeowner will receive a nightly phone call from our office manager, Marci … See more