Mainville Windows

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Connecticut’s Window and Door Replacement Contractor

We are a second generation home remodeling company that has been serving Newington and the state of Connecticut for over 40 years. Our goal is simple, we want to provide the highest level of quality craftsmanship at a reasonable price. We also want everyone we serve to be 100% satisfied at the completion of their project, and remain loyal customers for years to come.

We specialize in Window and Door replacement but have performed hundreds of Kitchen, Bathroom and Basement Remodeling, Decks, Home Additions, Vinyl Siding and Commercial Renovations.

We have completed various projects throughout CT, from installing replacement windows, installing doors, additions, or full kitchen, bathroom and basement remodels. We are dedicated to meeting your unique needs and preferences, no matter the project’s size or complexity, and ensuring exceptional results that leave you completely satisfied.

Quality & Integrity Tailored to your Needs

Most homeowners at one time or another have relied upon the services of a home improvement contractor. These are the goals and guidelines that we strive for on every home improvement project to set us apart from the competition throughout Connecticut:


  • Peace of Mind: We are fully licensed and insured. That means $100k-500k Worker’s Compensation and 1 Million-2 Million Liability coverage. There is no expense that you will ever incur in the rare event of an injury or damage to your property.
  • Experience: We have quality contractors that have been selected for their commitment to quality and their depth of knowledge.Our carpenters have a minimum of 15 years experience in their respective fields. We don’t have “helpers”, we have professionals.
  • Completion: Remodeling a kitchen or basement, or building an addition on your home can be stressful for a homeowner. The last thing you need to worry about is a contractor that drags the project on for months or never returns to put those finishing touches on your bathroom, kitchen, or home addition. When we start a project we finish. We don’t believe in jumping from place to place or stalling for months to complete a project. We respect your time.
  • Real People: Our owner is available to you the customer. That’s right, you don’t have to call a sales rep, or someone at a help desk that has no idea about your project. Decisions are made and followed up on immediately.
  • Guarantee: We have a 100% satisfaction goal on every project. If you are not satisfied, we will make every effort to make it right before we leave. We also have a 1 year guarantee on all of our craftsmanship.