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Find Doors (exterior) installers and replacers in Islip

"So far so good"

Tyler H on December 2025

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

"So far so good"

Tyler H on December 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
16 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
51 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


Design Visions

4.86(
90
)
Approved Pro

Design Visions

4.86(
90
)
Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
32 years of experience

With more than 35+ years of experience in all facets of home improvement, we are fully equipped to handle large, as well as the small projects. Quality and craftsmanship at an affordable price and we stand behind our work.

"Bob is AMAZING!!!!! Not only is he thorough with his workmanship but, he’s also very honest and overall a great person. He has turned our dining/kitchen area into a beautiful oasis leading out to our deck. We are now tempted everyday to go out on the deck and relax or grill. If you want a reasonably priced and honest contractor to do GREAT work……. BOB IS YOUR GUY!!!!!! "

Christopher S on September 2025

With more than 35+ years of experience in all facets of home improvement, we are fully equipped to handle large, as well as the small projects. Quality and craftsmanship at an affordable price and we stand behind our work.

"Bob is AMAZING!!!!! Not only is he thorough with his workmanship but, he’s also very honest and overall a great person. He has turned our dining/kitchen area into a beautiful oasis leading out to our deck. We are now tempted everyday to go out on the deck and relax or grill. If you want a reasonably priced and honest contractor to do GREAT work……. BOB IS YOUR GUY!!!!!! "

Christopher S on September 2025


Avatar for The Door Guy of LI LLC

The Door Guy of LI LLC

5.00(
20
)
Approved Pro

The Door Guy of LI LLC

5.00(
20
)
Approved Pro
Super Service Award
Customers say: Quick response
36 local quotes requested
5 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.

"Had the pleasure of having Sal install and replace 3 exterior doors and 2 storm doors. Very detailed, skilled, knowledgeable and professional with his craft. Will continue to use his service and recommend to others. "

Aundre K on December 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.

"Had the pleasure of having Sal install and replace 3 exterior doors and 2 storm doors. Very detailed, skilled, knowledgeable and professional with his craft. Will continue to use his service and recommend to others. "

Aundre K on December 2025


Avatar for BAYSIDE EXTERIOR CORPORATION

BAYSIDE EXTERIOR CORPORATION

5.00(
14
)
Approved Pro

BAYSIDE EXTERIOR CORPORATION

5.00(
14
)
Approved Pro
16 years of experience
Free onsite estimate

Bayside Exteriors 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.

"Very professional, thorough, and precise. They get to the job on time and everything is also spotless after completion. I will definitely hire again due to their excellent work and fair pricing. "

Grace S on January 2026

Bayside Exteriors 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.

"Very professional, thorough, and precise. They get to the job on time and everything is also spotless after completion. I will definitely hire again due to their excellent work and fair pricing. "

Grace S on January 2026


Lein Carpentry And Handywork

5.00(
3
)
Approved Pro

Lein Carpentry And Handywork

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

At Lein Carpentry And Handywork we pride ourselves on being the best Home Improvement company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"He was polite, courteous and very punctual! The price was right!"

Eric . on August 2022

At Lein Carpentry And Handywork we pride ourselves on being the best Home Improvement company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"He was polite, courteous and very punctual! The price was right!"

Eric . on August 2022


Pella Windows and Doors Showroom of Roslyn - Long Island, NY

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Pella Windows and Doors Showroom of Roslyn - Long Island, NY

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
14 local quotes requested
11 years of experience

Your New York Window and Door Experts Work with our talented professionals who are ready and waiting to help you find the windows and doors that best complement the style of your home, fit your lifestyle and improve energy efficiency.

Your New York Window and Door Experts Work with our talented professionals who are ready and waiting to help you find the windows and doors that best complement the style of your home, fit your lifestyle and improve energy efficiency.


Avatar for Brown Property Services

Brown Property Services

4.88(
24
)
Approved Pro

Brown Property Services

4.88(
24
)
Approved Pro
Super Service Award
Customers say: True professional
35 local quotes requested
6 years of experience

Hi I'm Tom, I do all of the work in this business, and only bring on helpers when necessary. I aim to offer as much "value" as possible, meaning bang for your buck. Great work, at reasonable prices that make sense and are clearly explained in estimates and quotes. What you want your project to look like in the end is completely up to you. I will make sure it is done properly!

"Tom has installed lighting fixtures, hung closet poles and other jobs around my home. He is easy to work with and completes all jobs with ease and efficiency! I highly recommend Tom . "

Karen D on October 2025

Hi I'm Tom, I do all of the work in this business, and only bring on helpers when necessary. I aim to offer as much "value" as possible, meaning bang for your buck. Great work, at reasonable prices that make sense and are clearly explained in estimates and quotes. What you want your project to look like in the end is completely up to you. I will make sure it is done properly!

"Tom has installed lighting fixtures, hung closet poles and other jobs around my home. He is easy to work with and completes all jobs with ease and efficiency! I highly recommend Tom . "

Karen D on October 2025


Avatar for A-Frame Construction LLC

A-Frame Construction LLC

5.00(
12
)
Approved Pro

A-Frame Construction LLC

5.00(
12
)
Approved Pro
3 years of experience
Free onsite estimate

A-Frame Construction LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

"Excellent Excellent Excellent "

Larry V on December 2025

A-Frame Construction LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

"Excellent Excellent Excellent "

Larry V on December 2025

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FAQs for doors (exterior) installation and replacement projects in Islip, 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 Islip, 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.