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TRUSTED BY COS COB, CT HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon167
    Verified window services reviews

Find Window pros in Cos Cob

VELUX America

2173 HAWKINS ST STE H
New on AngiNew on Angi
Approved Pro

VELUX America

2173 HAWKINS ST STE H
New on AngiNew on Angi
Approved Pro
548 local quotes requested

Start with skylights! At VELUX, our mission is clear: we're dedicated to transforming your space with natural light and fresh air with skylights. Whether you're looking to replace old skylights or install brand-new ones, we will guide you every step of the way. Why Choose VELUX? =================== When it comes to skylights and roof windows, VELUX is the global leader. Here's why you should trust us to transform your home: 1. Innovation and Quality: VELUX skylights are renowned for their innovation and unmatched quality. They're designed to let in abundant natural light while keeping your space leak-free and energy-efficient. 2. Huge Product Selection: You’ll have access to a wide range of skylight options, from fixed to vented skylights. And we are here to help tailor the selection to suit your specific needs and style preferences. 3. Expertise: We take pride in what we do at VELUX, and our team is highly trained to guide you through the entire process. From selecting the perfect product for your space to providing valuable recommendations, we're committed to making sure your skylight project is a complete success. 4. Professional Installation Partners: We don't stop at product selection and recommendations; we also match you with a VELUX-trained installer who will handle the installation of your skylights with precision and expertise.

Start with skylights! At VELUX, our mission is clear: we're dedicated to transforming your space with natural light and fresh air with skylights. Whether you're looking to replace old skylights or install brand-new ones, we will guide you every step of the way. Why Choose VELUX? =================== When it comes to skylights and roof windows, VELUX is the global leader. Here's why you should trust us to transform your home: 1. Innovation and Quality: VELUX skylights are renowned for their innovation and unmatched quality. They're designed to let in abundant natural light while keeping your space leak-free and energy-efficient. 2. Huge Product Selection: You’ll have access to a wide range of skylight options, from fixed to vented skylights. And we are here to help tailor the selection to suit your specific needs and style preferences. 3. Expertise: We take pride in what we do at VELUX, and our team is highly trained to guide you through the entire process. From selecting the perfect product for your space to providing valuable recommendations, we're committed to making sure your skylight project is a complete success. 4. Professional Installation Partners: We don't stop at product selection and recommendations; we also match you with a VELUX-trained installer who will handle the installation of your skylights with precision and expertise.


"Fast good price clean"

Jason H on September 2024

Tri-State is the manufacturer and installer of premium quality vinyl windows and patio doors. We do the entire job ourselves, no subcontractor or middleman! Tri-State builds them, installs them and we guarantee them.

"Fast good price clean"

Jason H on September 2024


Avatar for A1 Home Improvement, LLC

A1 Home Improvement, LLC

1348 Berlin Turnpike
4.43(
7
)
Approved Pro

A1 Home Improvement, LLC

1348 Berlin Turnpike
4.43(
7
)
Approved Pro
Customers say: Quality work
45 years of experience
Warranties offered

A1 Home Improvement LLC. is based on the belief that the needs of our customers 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. We specialize in residential and commercial exterior projects. Call today for a quote.

"Roofing its something no home owner ever wants to do, but most have to go through. I won't even lie I wasn't even planning on getting a new roof, but Dale Knocked on my door and thats where the process started. My roof did go through insurance & aside from signing paper work/paying my deductible A1 handled everything. Obviously specific details from the insurance goes to you and then given to A1. Its not a short process and there is paperwork you have to sign, but all In all it did take me about 4 to 5 months where the process was started to roof replacement. Dale handled interactions with showing my the conditions of my roof and how to go about getting it put through the insurance. The only hiccup was that I have solar panels and I did feel like they where taken down to early (almost 5 months off), but I made my concerns known and one of the Managers called me and credited me $500 bucks (100 per month) that the panels where off. They did tell me setbacks in productions and things happen, but made me happy by giving me this credit. Didn't fight me on it, and didn't make me feel like I was just an insurance check on the other end. You can trust A1 home improvement with your home. I would like to thank Dale for his work & all the others that helped me throughout one of the most stressful process there can be for a house."

RUBEN G on July 2025

A1 Home Improvement LLC. is based on the belief that the needs of our customers 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. We specialize in residential and commercial exterior projects. Call today for a quote.

"Roofing its something no home owner ever wants to do, but most have to go through. I won't even lie I wasn't even planning on getting a new roof, but Dale Knocked on my door and thats where the process started. My roof did go through insurance & aside from signing paper work/paying my deductible A1 handled everything. Obviously specific details from the insurance goes to you and then given to A1. Its not a short process and there is paperwork you have to sign, but all In all it did take me about 4 to 5 months where the process was started to roof replacement. Dale handled interactions with showing my the conditions of my roof and how to go about getting it put through the insurance. The only hiccup was that I have solar panels and I did feel like they where taken down to early (almost 5 months off), but I made my concerns known and one of the Managers called me and credited me $500 bucks (100 per month) that the panels where off. They did tell me setbacks in productions and things happen, but made me happy by giving me this credit. Didn't fight me on it, and didn't make me feel like I was just an insurance check on the other end. You can trust A1 home improvement with your home. I would like to thank Dale for his work & all the others that helped me throughout one of the most stressful process there can be for a house."

RUBEN G on July 2025


Avatar for Highland Window & Siding Company LLC

Highland Window & Siding Company LLC

998 Farmington Avenue
4.85(
154
)
Approved Pro

Highland Window & Siding Company LLC

998 Farmington Avenue
4.85(
154
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
109 local quotes requested

As a multi-year Super Service Award winner, Highland Window Company LLC is a family owned and operated business with over 18 years of industry experience. Our owner, Marc Cowan, will come to your home to deliver your exact written quote in 30 minutes. NO high pressure sales tactics and NO sales people working for high commissions. It is our goal to build a relationship with our clients that will last a lifetime. What sets us apart from our competitors is our dedication to put our customers first. All of our high quality, energy star rated products are covered by a lifetime transferable warranty. Our highly trained installers work only for Highland and have been working with Highland for over 10 years. That means that every review you read on Angie’s List was installed by the same team. The same team that will carry out your installation. Angie’s List members should feel confident about hiring Highland for all window, siding and roofing needs. We guarantee that we will take the stress out of home improvement!

"We have had many home renovation projects done over the past two years. Marc and his team replaced most of our windows about 6 months ago. Of all the services we had done, I would put Marc & Highland Windows at the top of the list. Great product, great value, very responsive, very professional. We shopped around plenty before deciding on Highland, and we very happy we went with them."

Eric S on September 2022

As a multi-year Super Service Award winner, Highland Window Company LLC is a family owned and operated business with over 18 years of industry experience. Our owner, Marc Cowan, will come to your home to deliver your exact written quote in 30 minutes. NO high pressure sales tactics and NO sales people working for high commissions. It is our goal to build a relationship with our clients that will last a lifetime. What sets us apart from our competitors is our dedication to put our customers first. All of our high quality, energy star rated products are covered by a lifetime transferable warranty. Our highly trained installers work only for Highland and have been working with Highland for over 10 years. That means that every review you read on Angie’s List was installed by the same team. The same team that will carry out your installation. Angie’s List members should feel confident about hiring Highland for all window, siding and roofing needs. We guarantee that we will take the stress out of home improvement!

"We have had many home renovation projects done over the past two years. Marc and his team replaced most of our windows about 6 months ago. Of all the services we had done, I would put Marc & Highland Windows at the top of the list. Great product, great value, very responsive, very professional. We shopped around plenty before deciding on Highland, and we very happy we went with them."

Eric S on September 2022


Avatar for Power Home Remodeling

Power Home Remodeling

60 Commerce Dr
4.67(
363
)
Approved Pro

Power Home Remodeling

60 Commerce Dr
4.67(
363
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
183 local quotes requested

As the nation’s largest full-service exterior home remodeler, we are backed by over 1,000+ Angi Super Service awards and more than one million happy customers. Why? Because we treat each job as an audition. An opportunity to prove ourselves to you. And the results speak for themselves. So make your home all it was meant to be with our unrivaled exterior services. Contact us today for a free, no obligation estimate on replacement windows, roofing, siding, doors, or attic insulation.

"I knew they were good, but they are beyond excellant! Instalation was phenomanal and pella product are some of the best windows in the country!"

Dan M on October 2025

As the nation’s largest full-service exterior home remodeler, we are backed by over 1,000+ Angi Super Service awards and more than one million happy customers. Why? Because we treat each job as an audition. An opportunity to prove ourselves to you. And the results speak for themselves. So make your home all it was meant to be with our unrivaled exterior services. Contact us today for a free, no obligation estimate on replacement windows, roofing, siding, doors, or attic insulation.

"I knew they were good, but they are beyond excellant! Instalation was phenomanal and pella product are some of the best windows in the country!"

Dan M on October 2025


"Did not start yet will be in November "

Gisele S on October 2025

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

"Did not start yet will be in November "

Gisele S on October 2025


Avatar for BHI Builder & Home Improvement LLC

BHI Builder & Home Improvement LLC

194 West Avenue Apt 4
5.00(
1
)
Approved Pro

BHI Builder & Home Improvement LLC

194 West Avenue Apt 4
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Builder Home Improvement LLC 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. 20 years of 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.

"They were great, quick and creative."

Gustavo X on July 2022

Builder Home Improvement LLC 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. 20 years of 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.

"They were great, quick and creative."

Gustavo X on July 2022


CAC Carpentry Art & Craft

22 Greenwich Avenue
New on AngiNew on Angi
Approved Pro

CAC Carpentry Art & Craft

22 Greenwich Avenue
New on AngiNew on Angi
Approved Pro
30 years of experience
Free onsite estimate

CAC carpentry Art & Craft is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 25 years of experience serving Greenwich, CT and surrounding areas. Call today and let us put our experience to work for you!

CAC carpentry Art & Craft is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 25 years of experience serving Greenwich, CT and surrounding areas. Call today and let us put our experience to work for you!


Avatar for Ron's Masonry

Ron's Masonry

24 Sniffen Street
4.96(
26
)
Approved Pro

Ron's Masonry

24 Sniffen Street
4.96(
26
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
30 local quotes requested

At Ron's Masonry, we pride our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business.

"Job has been completed. They arrived as scheduled, performed the work requested and cleaned up excess materials and remaining debris from the job site. As a result of the great job done on the original project, we requested that Ron's Masonry undertake a second project. They again arrived on time and completed the second project in the timeframe specified and within budget."

Thomas C on September 2025

At Ron's Masonry, we pride our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business.

"Job has been completed. They arrived as scheduled, performed the work requested and cleaned up excess materials and remaining debris from the job site. As a result of the great job done on the original project, we requested that Ron's Masonry undertake a second project. They again arrived on time and completed the second project in the timeframe specified and within budget."

Thomas C on September 2025


Avatar for JR General Contractor, LLC

JR General Contractor, LLC

22 Olive Street
4.83(
15
)
Approved Pro

JR General Contractor, LLC

22 Olive Street
4.83(
15
)
Approved Pro
Customers say: Quick response
15 years of experience
Free onsite estimate

JR General Contractor LLC, is committed to excellence 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.

"Yes they did an excellent job"

Louise R on May 2025

JR General Contractor LLC, is committed to excellence 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.

"Yes they did an excellent job"

Louise R on May 2025

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Windows questions, answered by experts

If your double-glazed windows are letting in a lot of noise, it might be because of improper installation. You may need to apply an acoustic caulk around the window to close any gaps or hire a window installation expert to fix the windows. Double-glazed windows are typically more effective at reducing noise when they have thicker glass panels or have a gas filling, like argon or krypton, between the two glass panels.

In cases of major leaks and rotting frames, replacing the window is the better long-term solution. However, broken glass, stuck windows, or minor leaks are more cost-effective to repair than to replace. It also depends on how many windows you need to be repaired. A widespread problem common to several windows may be worth considering replacement.

Yes, most manufacturers and contractors offer warranties for materials and labor. Confirm terms before purchasing.

Sometimes, you can buy windows directly from the manufacturer, and it may be cheaper than buying through a third party or wholesaler. Manufacturers may also offer more options, including custom shapes and features, or better warranties if you purchase through them directly. 

However, some companies limit the ability to buy from them, especially if you need standard pre-fabricated sizes, so don’t expect this service from every manufacturer.

Yes, every window needs a lintel. The lintel is necessary for redistributing the load above the window to the walls around the window. Windows aren’t meant to support a load, so lintels are an important part of a window installation. If you go to replace your windows and discover there are no lintels, you may need a window company or structural engineer to install lintels for your new windows.

The Cos Cob, CT homeowners’ guide to window services

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