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Find Doors (exterior) installers and replacers in Portsmouth

Avatar for Hi Tech Window and Siding Installations, Inc.
Hi Tech Window and Siding Installations, Inc.
3.7(
159
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 1995

Free estimates

Offers commercial services

"Hi-Tech did an excellent job replacing damaged cement board siding that another contractor didn t install properly! Next time I will call Hi- Tech first and get it done correct the first time."
Siding
Siding
Siding
Siding
Sunrise Windows

+4

Response time3 hrs
Recommended by70%of homeowners
Wagner Home Renovation
4.5(
34
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2006

Emergency services offered

Warranties offered

"The project went great; I'm very happy with the final product. It lines up exactly with what I was looking for at the start of the project and looks better than I could have planned because of some great design suggestions from Wagner Home Renovation along the way. We ended up creating two separate closets from the previous closet incorporating some previously unused space in the condo as well. Both closets are accessed through very nice double doors. The laundry closet and general/clothes closet both look great. Wagner Home Renovation used high quality repurposed wood from a previous project and black iron rods to give the general/clothes closet great character. All of the work was very well done, and blends into the existing paint and trim-work so well, you can't even tell any work has been done. As an example, they added a wooden keystone at the enlarged entranceway near the new closets that was a very nice touch and feels like it was always there. They were able to save me money throughout the project by offering to use repurposed wood from previous projects that was often better quality than what would normally be used. Wagner Home Renovation does high-quality work and has a genuine interest in how well the end result turns out. They have a great attention for detail, offer great design ideas and options, and are responsive, honest, budget-conscious, flexible, reliable and easy to work with. I highly recommend them."
Response time4 days
3 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Rite Window & Bath
Rite Window & Bath
4.4(
30
)

Serving Portsmouth, NH and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Warranties offered

"Installed 22 new windows, 2 entry doors, and new sliding glass door. Outstanding service, price, and installation. Highly recommend."
Entry Door
Doors
Doors
Doors
During Installation

+55

Response time6 hrs
1115 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for House Doctors of Seacoast
House Doctors of Seacoast
5.0(
6
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"I could not have been happier with the service. Miguel was friendly, very competent, accommodating and respectful. Amy was great for scheduling. Miguel was on time and put up a street mailbox to my wife's glee. We will definitely reuse this service for our future needs. My highest recommendation."
Gallery
Gallery
Response time12 hrs
Response rate88%
28 neighbors recently requested a quote
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 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 Merrill's Home Repair & Renovations, LLC
Merrill's Home Repair & Renovations, LLC
5.0(
23
)

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
14 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Northwind Exteriors
Northwind Exteriors
5.0(
4
)

Serving Portsmouth, NH and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Northwind Exteriors does great work, top notch quality. I would use them for any vinyl siding jobs, replacement doors & windows. Quality work, you won’t go wrong having them do you projects!"
Northwind Exteriors
Recommended by25%of homeowners
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
3 neighbors recently requested a quote
Recommended by70%of homeowners
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Showing 1-10 of 148
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.