All AIAs run 12PM - 1:30PM. To RSVP, email

New & Replacement Windows for Greenwich, CT & the Surrounding Areas

Interstate + Lakeland Lumber sells a variety of new and replacement windows, French doors and patio doors from Andersen, Marvin, Sierra Pacific, JELD-WEN, Kolbe, Belisle, and LaCantina. To ensure you choose the right new or replacement windows for your home, it’s essential to see them on display and meet with one of our knowledgeable sales staff. Each of our retail locations has a freestanding display for most of the windows and doors. Our showroom and design centers in Greenwich, CT & Shrub Oak, NY have all of the latest products from these major manufacturers on display. To learn more about our window selection, we invite you to call us or visit one of our showrooms!

At Interstate + Lakeland Lumber, we’ve partnered with some of the leading names on the market to ensure the ultimate satisfaction of our clients. In fact, we currently stock the latest products from Andersen, Marvin, and an array of standard-setting manufacturers. No matter the specific look of your surroundings, we’re sure to feature the perfect replacement windows at a highly competitive rate.

Be sure to browse the following sections to get a better sense of our current selection of replacement windows. As always, you’re more than welcome to visit one of our convenient locations to explore our expansive inventory. Our knowledgeable representatives are proud to assist property owners throughout the Greenwich, Stamford, Westport, Norwalk, Fairfield, New Canaan, CT; as well as the surrounding Scarsdale, Rye, Port Chester, and Shrub Oak, NY communities.

Click to view the modal
Click to view the modal
Click to view the modal
Click to view the modal
Click to view the modal
Click to view the modal
Andersen Windows and Doors
Marvin Windows and Doors
JELD WEN Windows and Doors
Belisle Windows and Doors
Belisle Windows and Doors
LaCantina Windows and Doors

Web Sales Call (203) 364-8516 or email: Web Sales

Andersen Windows

Andersen has been manufacturing quality low maintenance new and replacement windows and doors for over a century. In that time, they have pioneered industry innovations that have made them the most recognized and respected brand in windows.

Andersen 200 Series Windows
Andersen 200 Series

Andersen’s 200 Series provides quality windows at uncommon value. The new and replacement windows in the 200 Series include clad low-maintenance exteriors with wood or prefinished interiors. 200 Series windows are available with energy efficient Smart Sun glass and include double-hung, casement, awning, or gliding windows, and gliding or hinged patio doors

Andersen 400 Series Windows
Andersen 400 Series

Anderson’s most popular product line, the 400 Series combines quality engineered materials and fine craftsmanship. 400 Series windows are available in 5 standard exterior colors, and interior finishes that include pre-finished white, clear pine, maple and oak. Available in standard and custom sizes, 400 Series windows include double-hung, casement and retro-fit replacement windows. Simulated divided lights, clad exteriors, applied extension jambs and glazing options make the 400 line extremely versatile.

Andersen A-Series Architectural Windows
Andersen A-Series Architectural

Your homes architectural style says a lot about you. A-Series products from the Architectural collection allow it to speak with authenticity and clarity. These windows are available in 11 exterior colors, 3 interior wood species with 9 prefinished options, 12 hardware finishes, 3 glass options, patterned glass, art glass, 4 grill profiles, and the list keeps going. A-Series windows and doors have unmatched performance and unmatched peace of mind.

Ready to buy Andersen Windows®?
Web Sales Call (203) 364-8516 or email: Web Sales
For more information about Andersen Windows call us or visit
Marvin Windows

Marvin Windows

Marvin Windows are made-to-order, and built to last of high-quality wood, including pine, mahogany, cherry, white oak and vertical grain Douglas fir. They are available in a wood exterior or clad in one of 18 different colors of aluminum. There 5 different glass options, 8 hardware options, and numerous divided lite options. Casements, awnings, double hung, gliders, picture units, insert windows and patio doors are all available in standard and custom sizes. Marvin Windows and Doors are Built around you.


Featuring the Ultimate and Modern product lines, the Marvin Signature Collection offers the broadest range of product types, sizes, configurations, and design options. Every detail is considered, delivering the highest level of architectural correctness and unrivaled appeal.

Integrity Windows


The Elevate Collection is thoughtfully designed to offer specifically-chosen features and options that will help make your vision a reality. Warm wood interiors with strong, durable Ultrex fiberglass exteriors provide the ideal combination of beauty and strength.

Integrity Windows


Previously known as Integrity All Ultrex® The Essential Collection makes it easy to achieve design and quality with clean lines, streamlined options, and powerful performance. Strong, durable Ultrex fiberglass exteriors and interiors mean windows and doors that are virtually maintenance-free.

Integrity Windows

Ready to buy Marvin Windows®?

Web Sales Call (203) 364-8516 or email: Web Sales

For more information about Marvin Windows call us or visit

Jeld-Wen Windows and Doors

Jeld-Wen offers a variety of new and replacement windows, including natural wood, engineered wood, vinyl, and aluminum windows in a variety of standard shapes and sizes. Jeld-Wen windows are also available in custom sizes. JELD-WEN’s product line includes Custom, Siteline EX, Traditions Plus, Builders Wood, and Vinyl. To see the full variety of Jeld-Wen windows, visit an Interstate + Lakeland Lumber showroom near you, or the Interstate Design Center in Greenwich, CT.

Custom Wood

Jeld-Wen Custom Wood windows and doors are available in a wide variety of styles and finishes. These quality windows feature upper and lower sashes that slide vertically past each other for ease of use, and a tilt functionality for convenient cleaning

Siteline EX

Beautifully crafted Siteline EX new and replacement windows and provide exceptional energy efficiency superior and protection against decay. Available in a wide variety of shapes, styles, colors and finishes, Jeld-Wen Siteline EX windows and doors are a worry-free option that beautifully blends in with your home and your lifestyle.

Tradition Plus

For a traditional appearance with the peace-of-mind of AuraLast® wood, Jeld-Wen Tradition Plus windows provides superior resistance against decay, termites and water saturation in a beautiful package.

AuraLast® Wood

AuraLast® Wood new and replacement windows and doors provides the ultimate in protection from decay, water saturation and termites. All AuraLast® products are backed by a 20-year warranty, for beauty and peace-of-mind.

  • Click to view the modal
  • Click to view the modal
  • Click to view the modal

Ready to buy Jeld Wen Windows®?

Web Sales Call (203) 364-8516 or email: Web Sales

For more information about Jeld Wen Windows call us or visit

Belisle Windows and Doors

Belisle Doors and Windows is a manufacturer of high-end wood doors and windows. They started their operations in Eastern Québec more than 35 years ago.

Belisle Ancestral window

Belisle Ancestral Window

Their flagship product is the Ancestral window - the one and only, the original - which gave them a reputation envied all over Canada and the USA. It shows the abilities and unique craftsmanship that comes from their region’s workforce. They work with the most important architects and builders, as well as government consultants for historic restorations. They all choose Belisle for the quality, extreme care and respect for the products and the architectural elements.

Belisle Ancestral window

Belisle Ancestral

Discover the pride of our craftsmen. The one and only. The true original in-swing French casement. You may find look-a-likes but only Belisle makes the original. When customers want this window they ask for a Belisle Ancestral. The pure essence of Old Europe, offered to you with all the modern features that you deserve. More options, more concepts, more flexibility than any other casement window. The unique cremone bolt system and lift off hinges for a one-step operation to take the sashes off the frame. No central post for maximum opening and air flow, the easiest window to clean!

Belisle Double Hung window

Belisle Double Hung Windows

You need single or double hung windows? With their invisible balance or our weight and chain double hung windows, it cannot get more versatile than this. They have kept the style and tradition of yesterday’s true double hung and added the modern features you deserve. They make one of the best and most energy efficient high end double-hung window on the market!

Belisle Windows

Solid Wood Construction

  • Western Red Cedar, White Oak, Douglas Fir, African and Honduran Mahogany
  • Solid wood only, no laminates, finger joints or veneer are used
  • Factory glazed with 3/4” double insulated glass units
  • Low-E, Argon filled, tempered, laminated and historical glass available
  • Solid wood frame
  • 10 degree sloped sill
  • Incredible strength, stability and durability
  • Option 7 9/16" X 2 1/4" sash
  • Mortise and tenon construction
  • Unique design
  • High performance and classic lines
  • 7/8" Simulated divided lite (SDL) and 1 ¼” True divided lite (TDL) options
  • With choice of colors for perimeter and internal spacer bar
  • Solid brass sash locks and lifts
  • Adjustable interior sash stops

Ready to buy Belisle Windows?

Web Sales Call (203) 364-8516 or email: Web Sales

For more information about Belisle Windows call us or visit

Sierra Pacific Windows

H3 Double Hung

At the core of their advanced H3® is Fusion Technology™, the perfect integration of extruded aluminum, vinyl and solid wood. Its patent pending design and construction give it an industry-leading seal against the elements.


  • Solid wood interior for warmth and beauty. Not just a veneer like some windows.
  • Extra-strong 0.078” vinyl base frame for superior rigidity, total protection against rot, and enhanced resistance to air or water leaks. No vinyl components are visible when window is closed.
  • Extra heavy duty 0.055” extruded aluminum cladding. At least twice as thick as competitors’ roll-form cladding.
  • Integral rigid nailing fin for greater structural integrity, improved water barrier and easy installation. Virtually eliminates racking problems.
  • Both sash tilt in for easy cleaning.
  • Protected by their exclusive CoreGuard Plus™, the industry’s best wood protection
  • Many design options available.


Premium Double Hung - WI

They have updated this classic window design and turned it into an efficient, high performance product. Heavy duty, extra thick 0.055” extruded aluminum cladding for a low-maintenance exterior.


  • Protected by their exclusive CoreGuard Plus™, the industry’s best wood protection.
  • Their concealed jamb liner is a real upgrade for a natural all-wood interior free from unsightly vinyl.
  • Both sash tilt in for easy cleaning.
  • Many design options available.
  • Available in clad or wood exterior.


  • Click to view the modal
  • Click to view the modal

Ready to buy Sierra Pacific Windows®?

Web Sales Call (203) 364-8516 or email: Web Sales

For more information about Sierra Pacific Windows call us or visit

LaCantina Doors

LaCantina Doors is the pioneer in designing and manufacturing large operable door and window systems. Dedicated to developing these products, LaCantina offers the most innovative folding, multi slide and swing systems available in the widest range of materials including Aluminum, Aluminum Thermally Controlled, Aluminum wood, Contemporary Clad, Wood and Vinyl to complement any architectural style with performance options to suit any environment.

LaCantina Doors completely transform space, creating dramatically expanded interiors filled with natural light and open air. Backed by an industry leading 10 year warranty, unmatched product quality & value and a brand legacy of innovation & performance, LaCantina Doors is the preferred choice when it comes to open spaces.

  • Click to view the modal
  • Click to view the modal
  • Click to view the modal
  • Click to view the modal
  • Click to view the modal
  • Click to view the modal

Ready to buy LaCantina Doors

Web Sales Call (203) 364-8516 or email: Web Sales

For more information about LaCantina Doors call us or visit

Interstate Lumber

Connect with us:


Greenwich Store
184 South Water Street
Greenwich, CT 06830

Tel: (203) 531-8050
Fax: (203) 531-1373
Location Manager

247 Mill Street
Greenwich, CT 06830

Tel: (203) 531-8885
Fax: (203) 531-6318
Location Manager

  • LinkedIn
  • FaceBook
  • Instgra
  • Houzz
  • build

Copyright © 2021 Interstate + Lakeland Lumber corp.  All rights reserved.