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Find Doors (exterior) installers and replacers in Holtsville

"Project was delayed multiple times. Stated they will give a discount, they never did."

Martin L on November 2025

Replacement Window Installation, Replacement Patio Door Installation, Replacement Entry Door Installation

"Project was delayed multiple times. Stated they will give a discount, they never did."

Martin L on November 2025


Avatar for Carlos Home Improvement

Carlos Home Improvement

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Approved Pro

Carlos Home Improvement

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
15 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.


Keith Welsby

4.93(
28
)
Approved Pro

Keith Welsby

4.93(
28
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
50 years of experience

I am a retired general contractor with over 35 years of industry experience, I specialize in expert door installation and repair. unlike your local home improvement store my price's are not top heavy, ( the guy installing your door is usually three steps down the food chain). Having owned and operated a company manufacturing doors and windows for the "Landmark Districts of New York City" I offer a variety of Home Improvement services that are customizable to each individual project. also a variety of related service and repair projects. I pride myself on the quality of my work and look forward to building lasting relationships with my clients and to guarantee there satisfaction!

"Top Notch Work! And a genuinely nice person."

Denise H on September 2019

I am a retired general contractor with over 35 years of industry experience, I specialize in expert door installation and repair. unlike your local home improvement store my price's are not top heavy, ( the guy installing your door is usually three steps down the food chain). Having owned and operated a company manufacturing doors and windows for the "Landmark Districts of New York City" I offer a variety of Home Improvement services that are customizable to each individual project. also a variety of related service and repair projects. I pride myself on the quality of my work and look forward to building lasting relationships with my clients and to guarantee there satisfaction!

"Top Notch Work! And a genuinely nice person."

Denise H on September 2019


Lang Co Construction

4.91(
140
)
Approved Pro

Lang Co Construction

4.91(
140
)
Approved Pro
Customers say: True professional
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
14 local quotes requested

Been doing professional residential work for the past 31 years in the New York City metropolitan and Long Island area. Top-notch craftsman, customer service oriented. All work is guaranteed!!!

"He was extremely professional and punctual and did an overall good job!"

Carina B on July 2024

Been doing professional residential work for the past 31 years in the New York City metropolitan and Long Island area. Top-notch craftsman, customer service oriented. All work is guaranteed!!!

"He was extremely professional and punctual and did an overall good job!"

Carina B on July 2024


Avatar for The Door Guy of LI LLC

The Door Guy of LI LLC

5.00(
19
)
Approved Pro

The Door Guy of LI LLC

5.00(
19
)
Approved Pro
Super Service Award
Customers say: Quick response
31 local quotes requested
4 years of experience

At the Door Guy, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Professional, efficient and good work!"

Krystal L on October 2025

At the Door Guy, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote.

"Professional, efficient and good work!"

Krystal L on October 2025


DH COASTAL CONSTRUCTION CORP

5.00(
2
)
Approved Pro

DH COASTAL CONSTRUCTION CORP

5.00(
2
)
Approved Pro
Free onsite estimate
Emergency services offered

We are extremely passionate about the work that we do. You can depend on us to provide a high quality service at a fair and honest price. We understand that the future of our business depends upon our reputation and that is why customer service is by far our highest priority. If you are looking for a professional you can trust, please call today to schedule a no-obligation estimate!

"I needed some doors trimmed and adjusted due to new carpet being installed. These guys were fast, efficient and did a great job!"

Don H on December 2025

We are extremely passionate about the work that we do. You can depend on us to provide a high quality service at a fair and honest price. We understand that the future of our business depends upon our reputation and that is why customer service is by far our highest priority. If you are looking for a professional you can trust, please call today to schedule a no-obligation estimate!

"I needed some doors trimmed and adjusted due to new carpet being installed. These guys were fast, efficient and did a great job!"

Don H on December 2025


Avatar for DMB Handyman Services

DMB Handyman Services

4.94(
8
)
Approved Pro

DMB Handyman Services

4.94(
8
)
Approved Pro
Customers say: Quick response
8 years of experience

DMB Handyman Services is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Did what we needed, how we wanted it and in a timely manner"

mary r on August 2025

DMB Handyman Services is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Did what we needed, how we wanted it and in a timely manner"

mary r on August 2025


Avatar for JF CORP Construction

JF CORP Construction

5.00(
4
)
Approved Pro

JF CORP Construction

5.00(
4
)
Approved Pro
26 years of experience
Free onsite estimate

With over 25 years of trusted experience serving Long Island and surrounding areas, JF CORP General Construction has built its reputation on quality, integrity, and a customer-first mindset. Licensed, Reliable, and Client-Focused JG CORP holds an active Home Improvement Contractors license in Nassau County, giving you peace of mind that your project is being handled legally and professionally. We pride ourselves on transparent pricing, on-time delivery, and clear communication from start to finish. Our mission is to do the job right the first time — and make sure you’re satisfied for years to come.

"I don't have the before pictures"

Hazel a on November 2025

With over 25 years of trusted experience serving Long Island and surrounding areas, JF CORP General Construction has built its reputation on quality, integrity, and a customer-first mindset. Licensed, Reliable, and Client-Focused JG CORP holds an active Home Improvement Contractors license in Nassau County, giving you peace of mind that your project is being handled legally and professionally. We pride ourselves on transparent pricing, on-time delivery, and clear communication from start to finish. Our mission is to do the job right the first time — and make sure you’re satisfied for years to come.

"I don't have the before pictures"

Hazel a on November 2025


KINGS CONSTRUCTION & FLOORING

5.00(
1
)
Approved Pro

KINGS CONSTRUCTION & FLOORING

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
40 years of experience

With several years of experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"Extremely happy I went with American Flooring for this project. Darrell went above and beyond, the final outcome was top notch. Price was way under the other estimates I received. I highly recommend if you are looking to refinish floors. Definitely calling him again for other rooms in my house."

jason r on July 2015

With several years of experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"Extremely happy I went with American Flooring for this project. Darrell went above and beyond, the final outcome was top notch. Price was way under the other estimates I received. I highly recommend if you are looking to refinish floors. Definitely calling him again for other rooms in my house."

jason r on July 2015


"We went over everything that was going to be done step by step both A.J. and Sam explained and guided us in the process. All came in at budget and in a timely manner. They were clean and reliable. I Will use them for my next project! ps. All of their recommendations for plumbing, electrical and painting were fantastic."

VINCENT S on March 2025

Owner owned & operated. Full service remodeling company specializing in medium to large projects. Serving Suffolk county and the Hamptons. High end building and remodeling firm. Expect excellent quality and customer service. Permit and Variance Specialists.

"We went over everything that was going to be done step by step both A.J. and Sam explained and guided us in the process. All came in at budget and in a timely manner. They were clean and reliable. I Will use them for my next project! ps. All of their recommendations for plumbing, electrical and painting were fantastic."

VINCENT S on March 2025

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FAQs for doors (exterior) installation and replacement projects in Holtsville, NY

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 Holtsville, NY 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.