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Find Doors (exterior) installers and replacers in Portsmouth

Avatar for Pro Warrior Construction
Pro Warrior Construction
5.0(
29
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I cannot say enough positive about this company. Outstanding quality, workmanship, professionalism, and attention to detail. The workers are true artisans who care about the quality, excellence, & beauty of their work. The project involved complete removal of old siding, repair and replacement of exterior sheathing with rot and water damage. This was then followed by a full custom siding job. They did a beautiful job and are the best. contracting company I have ever worked with! Yaan was wonderful to work with. 5 stars!!!!!!?"
Matt Klein
Matt Klein
Matt Klein
Response time4 days
6 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Avando Inc.
Avando Inc.
5.0(
3
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Avando did an excellent job installing our new exterior door. The installer was professional, courteous, and took the time to answer all of our questions, which gave us confidence throughout the process. Installer was punctual, kept the area clean, and made sure the door fit perfectly. We highly recommend Avando to anyone looking for quality work and reliable service."
Doors installation
Doors installation
Doors installation
Doors
Doors

+28

Response time4 hrs
14 neighbors recently requested a quote
Avatar for Hi Tech Window and Siding Installations, Inc.
Hi Tech Window and Siding Installations, Inc.
4.2(
129
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 1995

Free estimates

Offers commercial services

"I have hired Hi Tech Window and Siding over the years to install windows throughout my house, install siding on my house, as well as entry doors and a sliding door that opens to a beautiful deck which they also installed. Needless to say, my wife and I highly recommend Hi Tech. The professionalism exhibited by Hi Tech is second to none. They use quality products, employ knowledgeable, professional craftsmen and most importantly stand behind every installation 100%. I am proud to recommend Hi Tech Window and Siding to everyone who is looking for a quality contractor. There is no better."
Siding
Siding
Siding
Siding
Sunrise Windows

+4

Response time3 hrs
Recommended by71%of homeowners
Avatar for BLAKE'S CLEANCUT CARPENTRY
BLAKE'S CLEANCUT CARPENTRY
4.9(
17
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Kevin was great, he was very responsive on a Saturday and came to hang a new door for me the next day. The installation was more complicated than I originally anticipated. The hinges, deadbolt and door knob did not align with the existing cut outs. Kevin did a great job making the door look like it was pre-hung on the existing frame."
Bathroom
Bathroom
Bathroom
Remodel
19 neighbors recently requested a quote
Avatar for Boyd Building
Boyd Building
5.0(
17
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Shawn did a fantastic job installing my air conditioners. He is thorough and customer focused. I will definitely hire him for other jobs. Beneta Brown"
Stone veneer
Stone veneer
Stone veneer
Stone veneer
Stone veneer

+80

Response time2 hrs
4 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for Merrill's Home Repair & Renovations, LLC
Merrill's Home Repair & Renovations, LLC
5.0(
22
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

"Very capable and professional. Communicating with Phil Merrill was a pleasure. He got back to me with an estimate immediately and the siding repair job was completed within hours. Anyone looking for honest and caring individuals for repair work around your home need look no further. Very happy with the whole experienceâ ¦ the work as well as the customer service."
Front
Front Before
Back
Back
Front After

+64

Response time2 days
15 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Rite Window & Bath
Rite Window & Bath
4.4(
21
)

Serving Portsmouth, NH and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Warranties offered

"They installed some windows and vinyl siding on my home. They were very professional, communicative, paid great attention to detail, and left the work site clean. Definitely worth the investment."
Entry Door
Doors
Doors
Doors
During Installation

+55

Response time6 hrs
1159 neighbors recently requested a quote
Recommended by85%of homeowners
NP Carpentry
5.0(
20
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2008

Free estimates

Small jobs welcome

"We cannot say enough good things about Nick. He replaced all of our exterior trim and it looks incredible. It was a huge project and Nick did not disappoint! Nick and Marshall are both so kind, hard working, detail oriented and a pleasure to work with. They gave us updates every day and were very transparent about their progress along the way. We cannot wait to have NP Carpentry back for a future project!"
Response time1 day
Recommended by100%of homeowners
Wagner Home Renovation
4.8(
29
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2006

Emergency services offered

Warranties offered

"I am extremely pleased with the results.  The workmanship and materials were of the very highest quality.  Asa was very responsive and accommodating and the price was very reasonable.  I highly recommend Wagner Home Renovation to anyone considering a project of similar size and scope. <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Dave Haas <br />"
Response time4 days
3 neighbors recently requested a quote
Recommended by89%of homeowners
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FAQs for doors (exterior) installation and replacement projects in Portsmouth, NH

Modern steel doors incorporate protective coatings and finishes that significantly reduce rust potential. These treatments create effective moisture barriers when properly maintained. Small scratches or damage should be promptly addressed with touch-up paint to prevent moisture from reaching the underlying metal. 

Doors in coastal or high-humidity environments benefit from additional protective measures and more frequent inspection. With proper care, most steel doors resist corrosion for decades.

Steel doors provide superior resistance against forced entry attempts compared to fiberglass alternatives. The inherent strength of steel creates a formidable barrier that resists impacts and tampering more effectively than composite materials. 

While high-quality fiberglass doors offer reasonable security, steel provides an exceptional strength-to-weight ratio and structural integrity. For maximum protection, look for steel doors with reinforced strike plates and multi-point locking systems.

Most manufacturers provide warranties covering manufacturing defects for periods ranging from five to 15 years, depending on the product line and quality tier. Hardware components often carry separate warranty coverage, often for shorter durations. Installation services may include workmanship guarantees covering proper fitting and operation. Always review warranty documentation carefully to understand coverage limitations and maintenance requirements that might affect warranty validity.

Provided your existing wood frame remains structurally sound and properly aligned, professional installers can often adapt a steel door to fit. The process requires careful measurement and potentially minor modifications to accommodate the new door's specifications. The frame must provide adequate support for the heavier steel door construction. A qualified installer will evaluate your current frame's condition and recommend appropriate adjustments to ensure proper function and security.

The Portsmouth, NH homeowners’ guide to doors (exterior) installations and replacements

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