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TRUSTED BY DOVER, DE HOMEOWNERS

  • Average homeowner rating star icon4
    Average homeowner rating
  • Verified reviews icon236
    Verified window and door contracting services reviews

Top-Rated Window and door contractors in Dover - Updated Nov 2026

Avatar for Something Constructive
Something Constructive
4.9(
118
)
Doors - RepairDoors - Repair - For BusinessHardware, Latches & Tracks (Door) - Repair or Replace+5 more

Serving Dover, DE and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"The crew Patsy sent did an excellent job in installing the new door that we purchased. A fair amount of field fitting was required which they handled professionally. We are very pleased with the work and would hire again."
Additional Photos
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Additional Photos

+25

Response time1 day
Response rate100%
Recommended by97%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
5.0(
222
)
New Windows - 2New Windows - 3-5New Windows - 6 +

Serving Dover, DE and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Ryan was very personable and enjoyable to have a conversation with. He really knows how to connect with people. The crew was very fast and the windows look amazing. Next project is doors and can?t wait for home genius to do that!"
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing

+78

70 neighbors recently requested a quote
Recommended by8%of homeowners
Avatar for CASTILLOSA GROUP LLC
CASTILLOSA GROUP LLC
5.0(
8
)
Doors (Interior) - Install or ReplaceDoors (Exterior) - Install or ReplaceDoors (Exterior) - Install or Replace - For Business+2 more

Serving Dover, DE and surrounding areas

Approved

In business since 2024

Free estimates

Offers commercial services

"Ramona and Alberto were true Professionals. They listened to our needs and delivered more than we expected. They were friendly and respectful. They were both skilled tradesmen, and we would definitely recommend them to anyone who needs work done on their residence. Our new French Doors will look great with our new deck. Thank you guys for everything you did."
Interior Doors upgrade
Interior Doors upgrade
Interior Doors upgrade
Interior Doors upgrade
New room addition

+11

4 neighbors recently requested a quote
Avatar for Renuity Northeast
Renuity Northeast
4.3(
38
)
Doors (Exterior) - Install or ReplaceNew Windows - 6 +New Windows - 3-5

Serving Dover, DE and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Warranties offered

"I have to say that Matt, Dave and Rich were amazing! They were professional, friendly and cleaned up after themselves! I will tell anyone I know looking for windows to call Rite Window for sure. Happy customer Darlene"
Entry Door
Doors
Doors
Doors
During Installation

+55

Response time6 hrs
2690 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Castle - The Window People
Castle - The Window People
2.9(
1,726
)
Doors (Exterior) - Install or ReplaceNew Windows - 6 +Sliding Door - Install+1 more

Serving Dover, DE and surrounding areas

Approved (Corporate)

In business since 1991

Credit card accepted

Offers commercial services

"My name is Jason Haslbeck and I live in Chester County, PA. My wife and I have used Castle Windows for the replacement of all our windows, a new front door and now a new custom French Door slider (three separate project installations). Our sales representative, Roberto Munoz, has been an absolute pleasure to work with for all of our installations. Their customer service is excellent and their products are the best in the industry. Their lifetime warranty is legitimate and very valuable. Due to the Corona Virus, our latest project design consultation (French Doors) was done over the telephone using a ZOOM application. Very convenient technology and the presentation was very professional. On a personal note, our sales representative (Roberto) is a very faith based, honest human being and we have never been happier with a contractor or sales representative. I would highly recommend asking for Roberto Munoz as your sales representative as he is very knowledgeable, professional and courteous. Overall, from my experiences, Castle Windows is the best window and door company in the region. We did extensive research in comparing them to Pella, Anderson and other companies and Castle's product quality, installation and pricing was the best value by far. I would normally never take time out of my day to write a review, but my experience with Castle Windows (and Roberto Munoz) is one that deserves recognition. Jason & Hope Haslbeck Chester County, PA"
Habitat for Humanity Donation Day!
Another Happy Customer!
Toys For Tots collection!
Since 1977!
Coat Drive

+13

Response time1 day
Response rate100%
38 neighbors recently requested a quote
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Showing 1-10 of 263
Window Door Contractors FAQs, answered by experts

Ensures proper fit and function, maximizing insect protection and airflow.

Tears, holes, or difficulty in opening and closing suggest a need for repair.

It is generally recommended to remove window screens for the winter, especially in climates with heavy snow, freezing rain, or frigid temperatures. Removing them helps prevent damage to the screen mesh and frames that can be caused by ice and moisture buildup between the screen and the window. Taking out the screens also allows more natural light and warmth into your home during shorter winter days and makes it easier to clean your windows thoroughly. In warmer climates where harsh weather is not a concern, the decision is more about personal preference; some homeowners prefer the clearer view, while others leave them in for convenience.

By replacing the worn mesh and repairing frames, restoring functionality and appearance.

While sometimes used interchangeably, screen doors and storm doors have key differences. Screen doors are simple structures, typically composed of just a frame and a screen, designed to keep out bugs while allowing air circulation. In contrast, storm doors are heavier and more complex, built to protect your home's main entry door from weather and intruders. They usually feature an aluminum frame with interchangeable tempered glass and screen panels, allowing you to switch between ventilation and insulation. A storm door offers more protection and versatility but generally costs more than a basic screen door.

The Dover, DE homeowners’ guide to window and door contracting services

From average costs to expert advice, get all the answers you need to get your job done.