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Sliding Patio DoorsProfessionally Installed in Massachusetts, New Hampshire, & Maine

Sliding Patio Doors in New Hampshire, Massachusetts, and Maine

Are You Looking for Custom Sliding Patio Doors for Your Massachusetts, New Hampshire, or Maine Home?

Hello, and welcome to The Window Source! The Window Source has over 35 locations across the US. We are experienced, professional, and we are family owned and operated.

If you are looking for beautiful and affordable custom patio doors in your New England home, then you came to the right place! The Window Source offers the highest quality replacement windows to our customers that are both affordable and energy efficient.

What is a sliding patio door?

Sliding patio doors also known as gliding doors and sliding glass doors are found in almost every home. They have a similar appearance but operate differently than a French door which swings in or outward. The operating glass panel of a sliding patio door glides on rollers on a track in the sill. This design provides great ventilation with the operating panel stored completely and safely out of the way when in the open position.

Sliding patio doors are not only functional, but they are also beautiful. They add an immense amount of light into any room and can quickly increase the value of your property.

Which types of sliding patio doors do we offer at The Window Source?

We offer many types of sliding patio doors at The Window Source. Our doors come in both double- and triple-panel models. All double- and triple-insulated glass panels come with code compliant tempered safety glass in all panes. The vinyl gliding panel frames are reinforced with heavy gauge steel to make your door strong and durable and features a full interlocking meeting rail.

Why do panes and insulation matter?

Double- and triple-insulated glass is extremely important when choosing doors in a climate like Massachusetts, New Hampshire, and Maine. New England has beautiful Springs and Summers, but our Winters can get rough! If you are not purchasing the right quality doors and windows, then your home’s utility bills will suffer. The difference is major. Walk by a good sliding door on a January day in Massachusetts and you should notice a thing. Walk by a poorly insulated one and you’ll feel the winter drafting in.

Each door comes standard with white or beige handles. Optional brass, satin chrome or oil-rubbed handles are also available.

Our LowE/Argon glass upgrades ensure that your new door carries the Energy Star certification for the best energy savings and comfort all year round.

Our Sliding Patio Door Features

  • Multi-chambered vinyl frames
  • Fusion-welded sashes
  • Full vertical heavy gauge steel reinforcement in sash frames
  • Tempered safety glass in all panes
  • Warm edge spacer system
  • Meets Energy Star requirements with LowE/Argon
  • Over-sized tandem steel rollers provide easy gliding operation
  • Dual point opposing hook locking mortise
  • Optional dual-point lock and/or our optional foot bolt lock
  • Transferable Lifetime Warranty

A few good reasons to replace the windows & doors in your New England home

100% Transferable Lifetime Warranty on Sliding Patio Doors

At The Window Source all of our windows and doors come with a 100% Transferable Lifetime Warranty. That means that even if you sell your home, the windows and doors will be covered. Imagine that! You can increase the value of your home and pass a lifetime warranty on to the new owners! To read more go to our warranty page.

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View Our Products

Click any image below to view more information on some of the products we offer in Massachusetts, New Hampshire, & Maine.

Thank you for visiting The Window Source of NH, MA, and ME.
We look forward to talking with you!

Did you know?

We have 5-Star Rating on Google & an A+ Business Rating with the BBB!
We have pretty great reviews on Angie's List, too! We take our business seriously and put our customers first.

  • EPA Lead Safe
  • Installation Masters
  • Read Unbiased Consumer Reviews Online at
Miss Pink Pagent - Life Is More Charity

The Window Source understands that Life is More!

The Window Source desires to support Local Charities! This past year we have had the privilege to link with a Community Park Renovation Team, support a local family adoption and most recently, The Miss Pink Pageant. Please call 1.888.282.2912 and speak to any of our representatives about this opportunity.

"I did want to mention one other reason why I chose to contact you and that was the reviews from your customers. Excellent reviews, of integrity, great quality and good workmanship! We want to partner with businesses with great reputations and people who want to help and serve the well being of others." - Tiffany, Organizer of The Miss Pink Pageant (

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