Window Company in Andover, MA

Full-service window replacement for Andover homes — proper flashing and waterproofing at every opening, PVC trim that won’t rot or need repainting, and the right glass package for each window’s exposure. From pre-war colonials along Main Street to 1980s homes in South Andover. Google Guaranteed. 150+ five-star reviews.

Window Services for Andover Homes

Andover homes span nearly every era of residential construction — from the brick and clapboard houses of Shawsheen Village to postwar subdivisions throughout South Andover and newer developments near the Merrimack College area. Each comes with different window conditions, and each needs a different approach.

Full-Frame & Insert Window Replacement: Full-frame replacement removes everything — frame, trim, and jamb — down to the rough opening. Insert replacement fits new units into solid existing frames. We recommend full-frame when the existing frame shows rot, water damage, or is out of square. For Andover homes with sound frames, inserts are faster and less disruptive. We carry Andersen, Marvin, Pella, Harvey, and Mathews Brothers — the right brand depends on the home's style, budget, and performance requirements.
Bay, Bow, and Specialty Windows Andover colonials and cape-style homes often feature bay windows in the living room or kitchen, double-hung combinations on the front facade, and specialty shapes in gable ends. We handle all configurations — bay and bow units with proper structural support, casements, picture windows, and custom shapes that match the home's original proportions.
Energy Performance & Glass Packages: The right glass package depends on the home's orientation and exposure. South-facing windows on an open lot need different solar heat gain properties than north-facing windows shaded by mature trees. We specify triple-pane, low-E coatings, and argon fills based on each window's actual conditions — not a one-size-fits-all approach.

CUSTOMER FEEDBACK ・ HEAR FROM OUR CLIENTS

Andover's Preferred Window Replacement Company!

5.0 Stars Across 150+ Reviews

Bradford Jones

We had been in our home a long time and exterior was due for serious updates. Roof was from the early 90s, siding was peeling in layers, and the windows were old vinyl with seal failure and had no insulation. We kept putting it off until a neighbor recommended John. He spent over an hour walking the property with us on the first visit, pointing out things we hadn't even noticed, including a section where moisture had been getting behind the siding for years. He didn’t pressure us, just a clear explanation of what was going on and what it would take to fix it right. We ended up doing everything. Full roof, new siding, all new windows, and complete trim. The crew showed up early, kept the property clean (and cleaned up after), and communicated well throughout. When they found more damage than expected behind one wall, John called same day with pictures and options before moving forward. The transparency was both refreshing and important. It's been about a year and a half and everything still looks and performs exactly as it should. Heating costs dropped noticeably and was especially apparent this year. We live on a main street and the noise in our front bedrooms is gone. The house legitimately looks like a completely different property. If you're in the north shore area thinking about exterior work, get a quote and talk to John. You'll see the difference.

Roman Cooper

We have a big old farmhouse out in Boxford with a roof that probably should've been replaced five years ago. Finally pulled the trigger and called D&G Exteriors. John came out, looked everything over, and gave us a quote that was fair and detailed. Crew did the whole tear off and install in three days. No complaints at all.

Parker Simmons

I’m so impressed with the service I received. The team was friendly, efficient, and professional. They took care of every detail, and my home looks amazing. I can’t thank them enough for the high-quality work!

James Matthews

Replaced siding, trim and gutters on front of house with Hardie board. Came out great. Crew came as scheduled and cleaned up every day. We love the new color.

Michael Rohan

The team was quick, careful, clean and the final decks look even better than expected. Would definitely use them again.

Nina Mercer

The work done was beyond what I expected. The team was punctual, professional, and really took the time to make sure the project was completed to a high standard. My home’s exterior looks amazing, and I’m extremely satisfied with the entire process.

Sydney Ward

What an excellent experience! The crew was professional and efficient, and they truly transformed the look of my property. They were respectful of my space, worked diligently, and the results speak for themselves. I would definitely recommend their services!

Abigail Thomas

I couldn’t be more pleased with the exterior services I received. The team was knowledgeable, courteous, and made sure everything was done right. They completed the job on time, and my home looks incredible. I’m so happy with the outcome.

Dylan Harrison

I’m thrilled with the work done on my property. The team was prompt, professional, and made sure everything was completed to perfection. They were friendly and respectful, and the final result exceeded my expectations. My home looks better than ever!

Adrian Foxley

The team did an outstanding job with the exterior work on my home. They were professional, efficient, and really paid attention to the details. My home looks fantastic, and I’m so happy with the results. Highly recommend!

Why Andover Homeowners Trust D&G for Window Replacement

Andover has one of the widest ranges of housing ages on the North Shore — from 18th-century homes near the town center to 1970s colonials in Shawsheen Heights and newer construction off River Road. Each generation of home presents different window challenges: original wood frames that have rotted through, 1990s builder-grade vinyl with fogged glass and failed seals, or aluminum-clad units that are drafty and past their insulating life.

Proper Flashing & Waterproofing: Head flashing, sill pan flashing, and full integration with the home's weather barrier at every window opening. This is where most water intrusion starts and where most contractors cut corners. Andover's freeze-thaw cycles punish bad flashing — a small gap at the sill becomes a wall leak within a few winters.
PVC Trim Systems: Cellular PVC trim that won't rot, split, or need repainting. Back-caulked joints and clean transitions that hold up for decades. Many Andover homes still have original wood trim around windows that's soft, peeling, or visibly deteriorated — we replace it all as part of the window project.
Dedicated Project Manager: One point of contact from initial measurement through final inspection. Your PM coordinates window ordering (lead times vary by brand and configuration), scheduling around weather, interior protection during installation, and quality checks at every stage.

FREQUENTLY ASKED ・ ANSWERS TO YOUR QUESTIONS

FAQs About Window Replacement in Andover, MA

How much does window replacement cost in Andover?

It depends on the number of windows, frame material, glass package, and whether you need full-frame or insert replacement. Most whole-house window projects in Andover range from $25,000 to $65,000+. Individual windows typically run $800 to $2,500+ installed depending on size and brand. We provide a detailed written estimate after measuring every opening.

What window brands do you install?

We carry Andersen, Marvin, Pella, Harvey, and Mathews Brothers. Each brand has strengths for different applications — Andersen and Marvin for premium wood-interior and fiberglass options, Pella for a range of price points with strong performance, Harvey and Mathews Brothers for quality vinyl at a competitive price. We help you choose based on your home’s style, budget, and energy goals.

Should I replace all my windows at once or do them in phases?

Either approach works. Replacing all at once is more efficient — one project, one crew, one disruption. But phasing by floor or by the worst-performing windows first is a practical option if budget is a factor. Many Andover homeowners start with the windows that are visibly failing or causing drafts and schedule the rest for the following year.

How do I know if I need full-frame or insert replacement?

We inspect the existing frames during the estimate. If the wood frame is rotted, water-damaged, or out of square, full-frame replacement is the right approach — we remove everything down to the rough opening and start fresh with new flashing and a properly prepared opening. If the existing frame is solid and the interior trim is in good condition, an insert fits new glass and sash into the existing frame, which is faster and less disruptive.

Will new windows reduce my energy bills?

Yes — especially if you’re replacing single-pane or older double-pane units with failed seals. Modern windows with low-E coatings, argon gas fills, and proper weatherstripping significantly reduce heat loss in winter and heat gain in summer. Many Andover homes from the 1960s through 1980s still have their original builder-grade windows that are well past their insulating life.

Does the Town of Andover require permits for window replacement?

Massachusetts building code requires permits for window replacement when you’re changing the size, location, or structural framing of an opening. Like-for-like replacements in existing openings typically don’t require permits but must still meet current energy code. Homes in the Ballardvale Historic District may need additional review from the Historic District Commission. We handle all permitting when required.

How long does a whole-house window replacement take?

Most whole-house projects take 2–5 days of on-site installation depending on the number of windows and complexity. Lead times for window manufacturing can add 4–8 weeks before installation begins, depending on the brand and configuration ordered. Your project manager provides a clear timeline once windows are ordered.

What certifications does D&G carry for window installation?

We’re Google Guaranteed, BBB Accredited with an A+ rating, and part of the Elite Preferred Contractor Alliance. Our window installations follow manufacturer specifications for flashing, insulation, and trim — the installation quality that supports the strongest warranty coverage available from each brand we carry.

What other services does D&G provide in Andover?

In addition to window installation, we provide roof replacement, roof repair, deck building, siding installation, and metal roofing in Andover. Visit our Andover service area page for a full overview of everything we offer, or browse all of our Essex County service areas. You can also learn more about D&G Exteriors on our homepage.

SIDING REPLACEMENT COST CALCULATOR

How much does a window replacement cost in Andover, MA?

Wondering what new windows will cost? Use our free window replacement estimator to get an instant price range based on the number of windows, material, and options you choose. Enter your details below and see your estimate in under 60 seconds.

Window Cost Estimator | D&G Exteriors

Window Replacement Estimator

See what new windows cost for your home in under 60 seconds

Estimates are approximate. Actual pricing depends on site conditions, material availability, and project specifics.

How Many Windows?

Enter the number of windows you need replaced

Window Material

Vinyl

Harvey, Mathews Brothers; low maintenance, energy efficient, great value

Fiberglass / Composite

Marvin, Andersen, Pella; strong, durable, low maintenance

Wood

Marvin, Andersen, Pella; classic look, premium craftsmanship

Installation Type

Replacement (Insert)

New window fits into existing frame

Full Frame

Remove old frame entirely, new construction install

Not Sure

We will help determine the best approach

Stories

1 Story

Single level

2 Stories

Standard two-story

3 Stories

Three-story or tall colonial

Additional Details

What type of windows do you have?

Select the most common type in your home

Window color

Non-white colors have a slight upcharge from most manufacturers

Any oversized or specialty windows?

Bay, bow, picture, or non-standard sizes

New exterior trim?

PVC or wood trim around windows

New interior trim?

Replace interior casing and sill around windows

Upgraded thermal performance?

Triple pane, enhanced Low-E, argon/krypton fill

Include screens?

New screens for each window

Grids or clean glass?

Grids (grilles) add a traditional divided-light look

When Are You Looking to Start?

This Month

Ready to move forward

1 - 3 Months

Planning ahead

3 - 6 Months

Future project

Just Exploring

Researching options and costs

Estimated Range

Your range depends on exact window sizes, brand, and site access. A free on-site estimate will narrow this down.

Material and labor costs typically increase a few times per year. Pricing may be higher if the project is delayed.

What's Included

Removal and disposal of old windows Proper flashing and waterproofing Foam insulation around frame Variety of window options and manufacturers Option for new interior trim Option for new exterior trim Full cleanup Manufacturer warranty

Want a Customized Estimate?

D&G Exteriors is a trusted window replacement company serving Andover, MA. We offer a variety of window options and manufacturers and both insert style and new construction replacements. Over 200 five-star Google reviews. Fill out the form below and we will schedule an appointment to review your roof in person and provide a detailed estimate tailored to your home.

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