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

Find Glass block installation 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
576 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 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
106 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
184 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


"Diego and his brothers that work for him were excellent. Work was very professional and a good price."

Marie L on January 2025

We do all kinds of repairs and new installations of shower doors, we also make glass handrails, aluminum storefronts, table glass tops, custom mirror work, antique mirror. etc. FULL INSURED

"Diego and his brothers that work for him were excellent. Work was very professional and a good price."

Marie L on January 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
35 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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Glass Block Windows questions, answered by experts

Heavy glass tends to be more expensive than thin glass because it is stronger and more durable. In most cases, ¼-inch-thick glass is ideal for mirrors, and ⅛-inch-thick glass is ideal for residential windows. Heavier glass isn’t always necessary, and can be more challenging to hang or install. Work with a local window installation pro for replacement or new construction windows.

Glass block installation can be relatively expensive due to the range of material costs and the labor time to assemble this type of specialty window. The process proceeds slowly as the glass does not absorb moisture from mortar and silicone caulk takes longer to harden, leaving spacers to hold up the structure until the caulk or mortar begins to cure. Plus, if your current windows have structural issues or damage, you’ll need to repair them before beginning the project, increasing your bottom line. 

Installation costs range from $400 to $1,500, depending on wall size, design complexity, and labor.

Glass block mortar is the best choice for glass block window units. It is specifically formulated for glass block window installation. Glass block mortar is usually a mixture of Portland cement, sand, and special chemicals. It is a white mortar that is applicable inside and outside your home. Do not use regular tile mortar because it may not have the binding strength and flexibility required for glass block windows.

Most installations take 1-3 days, depending on the number of blocks and customization requirements.

The Cos Cob, CT homeowners’ guide to glass block window services

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