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Universal Windows Direct provides world-class window and siding installations in Merrimack, NH. We've built a reputation on outstanding quality and craftsmanship and offer the industry's best warranties. Give us a call to discuss your options today!

  • USA-manufactured Windows & Siding

  • Competitive and Transparent Pricing

  • Lifetime Product & Workmanship Warranty

  • Award-winning Customer Service

  • Multiple Financing Options

Merrimack's Residential Window & Siding Experts

Our USA-made windows offer all the features and styles you want and are sized to your home’s specifications. Engineered to withstand New Hampshire’s weather variations, our windows come with a lifetime labor and materials warranty. Discover your options by visiting our Replacement Windows page.

Home Replacement Windows in Merrimack

Picture Windows

Picture windows provide an unobstructed view of your beautiful outside surroundings, allowing sunlight to pour into your home.

Upgrade your home with our durable and stylish composite or vinyl siding options. Each is backed by our lifetime warranty. Details are available on our Siding page.

Home Siding Installation in Merrimack

Our Ascend® composite siding offers the appearance of real wood without the concern of pest or moisture damage. Regular maintenance ensures it ensures its longstanding beauty and protection, even amidst NH's most severe weather conditions.

Composite Siding Installation Services

Our UniShield® vinyl siding is a budget-friendly, maintenance-free option available in styles and colors suited for every home. Get the look of real wood that will endure for as long as you own your home.

Vinyl Siding Installation Services

Residents of Merrimack are welcome to explore their window and siding replacement possibilities at our Candia Road, Manchester showroom. Click below to schedule some time with our experienced team. We look forward to guiding you on your home enhancement journey!

Schedule a Visit to our Home Remodeling Showroom!

We proudly offer window, siding, door, and skirting solutions for Merrimack area mobile homes. For details, visit our Mobile Home Remodeling page.

Mobile Home Exterior Remodeling

Our factory-certified Owens Corning Preferred Roof Contractors offer quality installation services with the industry's best warranty. To learn about the best options for your home, visit our Roof Installation page.

Asphalt Roofing Services

Our energy-efficient, USA-made exterior doors will beautify your Merrimack home and provide added security and protection. Visit our Replacement Doors page to get inspired!

Home Door Replacement Services

A full-service exterior home remodeling company, you can count on Universal Windows Direct for everything you need to refresh and protect your home.

Additional Exterior Remodeling Services in Merrimack


Get a residential window or siding installation estimate for your Merrimack, New Hampshire home. Contact us today!

Get a Residential Window or Siding Installation Estimate in Merrimack, NH.

Get A Quote

  • Actually, it’s super easy. Just give us a call at (603) 218-3756, or fill out our Free Estimate Form. After everything is scheduled, one of our friendly product specialists will meet with you at your home at your convenience — including nights and weekends. During the consultation we’ll discover your specific needs, show you the quality solutions and value we can offer, then provide you with a fair transparent estimate for our services.

  • Change the text and add your own content, including any information that is relevant to share. Then customize the font, size and scale to make it your own.

  • You don’t need to do anything but enjoy your new products and all the benefits they provide for you and your family! Your warranty is valid from the moment we installed them. We will send you your warranty packet as soon as your job is complete.

  • Yes, we absolutely do.


Our outstanding customer reviews represent our ongoing commitment to quality and service. 

Customer Reviews

Owens Corning preferred contractor
BBB A+ rating
Energy Star most efficient 2023
UniShield logo
Window and Doors Installation Masters badge
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