Windows Installation in Moline

“Mainstream Construction installed windows in our home on 17-18 December 2025. Initially, we were concerned about how cold the house would get, not to mention how installation would impact our holiday plans. We were pleasantly surprised with the speed and efficiency the crew worked. Our house remained cozy and 15 windows (with one being particularly challenging) were replaced in two days. Everyone, including Spencer, office staff and the crew, were very courteous and professional throughout the process. The crew cleaned up any messes that were created and even rehung our heavy, wooden blinds and curtains. We are very happy with the installation process and the windows, themselves. We highly recommend Mainstream Construction for these reasons as well as for their stellar, lifetime warranty.“

“Chris was friendly and was very up front and honest during his presentation. We are looking forward to sitting in our recliners and looking at the beautiful view thru our new window!“

“I retired in the Quad Cities. Bought a home that needed new windows. Best Improvement was recommended. From the first meeting to new window completion, the staff was outstanding! Sales, management and installers were professional and highly skilled. The windows are high quality with a lifetime warranty. Best Improvement's assessment, suggestions, together with my ideas resulted in an incredible outcome! I highly recommend Best Improvement!“

“Patt Co Design is extremely professional and hold themselves to a very high standard. I would highly recommend them for your remodeling needs.“

“Dan Hanell Construction is a quality company. They're hard to come by. After a storm last week, they came and fixed the problem perfectly and quickly. Wouldn't call anybody else. Thank you!“