I can not stress enough how happy I am with the service and company. From the first phone call, everyone was polite, professional and helpful. The day my windows were installed, the crew that came was absolutely amazing. They completed the job quickly and left the area better than how they found it.

The crew did a great job! I am very pleased. They definitely know what they are doing! They were in and out in no time and did a nice job and made sure I was happy with everything before they left. Would highly recommend!

I was very happy with the quality work Granto Glass Block did at our house. Getting an estimate was very easy and then the quick turnaround on getting the install done was fast. Gary and Kristen were so nice also, very honest people to work with. I highly recommend them

I called asking for a quote on a glass block window in the basement. They were able to come out the very next day for installation! Day of installation they were early and the whole job was finished in about 30 minutes. Excellent work.

Very friendly. Showed up on time and completely the job faster than expected. We had them block in one basement window and glass block window 3 others. They finished within an hour. Highly recommend everything looks great!

Repeat Customer! First, glass block for basement windows. Love them!Second, replaced picture window with double hung windows. SUPERB!No need to look any further. They offer quality, craftsmanship with value thrown in for fun! Will have them back again soon for more windows!

Amazing! Gerry and his crew are the best. They were on time, put in a beautiful bathroom window and cleaned up all within an hour! Such a pleasure to work with! Kristen the office manager responded to my calls promptly and answered all my questions. We were in the middle of a bathroom remodel and needed the window installed ASAP and they were there. I would absolutely recommend them to anyone and will use them again in the future

Great quality! These guys were really easy about everything, super friendly and got the job done quick! 5 windows and bathroom window, I recommend these guy! Good pricing too!

Great! Guys worked hard. Job came out fantastic

Gerry and his crew were fantastic! On time, professional, and quick! They were so easy to work with and did exactly what I wanted without trying to upsell. Very down to earth and no nonsense company. Absolutely loved working with them!

I am having a generator installed and need to have my vented glass block window replaced with a solid window. Since I was going to do one window, I decided to replace all of them. I called a few places and was told they didnt have time to do them or they never returned my calls. I contacted my generator installer and they recommended Granto. I gave them a call and the office staff was more than happy to help. They were able to do the job right away. Gerry and his crew arrived on time and within an hour all my windows were replaced. They were neat, professional, and very friendly. I highly recommend them.

Everyone I dealt with was really helpful and polite. The guys did an excellent job on our 5 basement windows and I could not believe how quickly they completed the job. The windows look great and I would 100% recommend to anyone in the area.

From the quotation process all the way through to the installation, Granto Glass Block was spot on. On the day of installation, the owner, Gerald Granto and a crew of three showed up a few minutes early and and within 1.5 hours had the current windows removed and the new ones (5 total) installed. The crew was very professional and courteous. I highly recommend using Granto Glass Block and would use them again and again. Thank you guys!

Kristin in the office is great! Answers questions, responds timely and she is there to help! Gerry came out on time, replaced nine basement windows in a few hours and looks beautiful. Would recommend them highly, especially in a time where some companies don’t even call back!

I had 3 glass block windows put in my basement. The team was professional, efficient and the windows are great!

I had 5 Ice glass block windows in my basement installed. They did an excellent job .Cleaned up everything. Only took 1 hour .The workers are very friendly. Just today they installed 4 Ice block windows on my parents house . They also were very happy with there service. I highly recommend. Granto Glass Block .Thank You Gerald Granto. Bob Cummings

Granto was amazing, team did great work, windows are excellent quality. Plus he is a veteran and his prices are very reasonable as well.

Granto was great. They were easy and hassle free. We had 5 windows replaced that were all original with the house. Some were cracked, molding gone. Just bad. With these new windows in, it looks10x better. Again, granto was great. They showed up on time and only took about 1.5 hours in total time. I would hire them again for a future project.

We used Granto Glass to install glass block in our building for a total of 16 large windows. They were on time, very professional, cleaned up everything and did an outstanding job installing my windows in two days. Jerry and his team were great, went beyond expectations and I would highly recommend them for your project.

Had 3 basement windows installed. Did a great job! Very happy with the whole process from scheduling to the install. I would definitely recommend to family and friends.

Very happy with my bathroom window install. I first had Buffalo Glass Block take a look at my window that is in my shower and they said they cant replace it and do all the trim work to seal the window as all they do is glass block. I then found Gerald Granto online and he was able to do exactly what I wanted. He showed up right when he said he would and completed the work in just under 2 hours. I had a window removed and replaced with glass block and he used never rot trim on the inside shower and caulked everything. I would definitely recommend Granto Construction for any glass block work.

What an amazing transformation Granto Glass Block has made to my home! The new Glass Block windows with vents are beautiful, they add more light in my basement, prevent any leakage as well as make the house more secure! Gerry and his crew are extremely knowledgeable and professional. They completed the removal, installation and clean up of 5 basement windows in less than 2 hours! I would highly recommend Granto Glass Block for your home improvement needs!

Right from the start they were very helpful and professional! The price was right and they were able to do the job right away! I Highly recommend them to anyone that needs glass block windows, i can already tell a difference in the temperature in my basement. Thank you again Granto Glass Block!!

They were amazing; they finished 5 windows for us in about an hour. They didn’t leave a mess or any trace behind that indicated they were here. The windows look great, we’re extremely happy with everything. I would definitely recommend them!

We had an excellent experience with Granto glass block. They replaced 4 old basement windows. Very smooth and easy process from receiving an estimate to scheduling and making a deposit to installation. Friendly, quick and clean. You can’t even tell they were there. I highly recommend this company!

Granto Co. was Awesome! They were very prompt and courteous! They put in 8 glass block windows! I couldnt believe how fast, and they cleaned up after the work was done. I would recommend to my friends and neighbors!

Exactly what you pay for... on time and professional. My house looks so much better. Thanks guys

I called and was able to an estimate the same day. They were booked weeks out, but I was selling my house and they worked with me and fit me in quickly. No other company cared enough to even try to help. They were on time and very clean. I couldnt believe how efficient and fast they were able to do all 3 windows. I highly recommend Granto Glass Block.

Just had my garage window replaced by this company yesterday. The new window looks great and they were in and out in less than two hours. Would definitely recommend them for another project.

Granto installed glass block windows in my house. Very friendly, professional and great prices. They did a great job and were super quick. Installed 5 windows in under an hour.

Jerry is a very friendly guy. Greeted us at his showroom with a smile and a handshake. We Discussed prices and expectations and scheduled installation of basement windows.The crew showed up on time. Everyone was friendly. They were only here about 1.5 hrs. They did a pretty good job of cleaning up. So far everything looks alright. True test will be a Buffalo winter. We have already discussed having him do more work on our house prior to listing it for sale. Definitely reccomend.

Took only 45 minutes to put in 4 new glass block windows. Very quick and efficient. No mess left either! Highly recommend!!!

Can’t say enough great things about Gerry and his crew. Prompt on the estimate. Arrived on time. Had my old garage windows out in a flash! When I told Gerry my schedule was a little up in the air due to the birth of my son, he congratulated me and upgraded my windows from Wavy pattern to Ice pattern, free of charge. The windows look outstanding! No mess or garbage left behind. Classy group of guys doing great work. I can’t wait to work with them again on the next project at our home. Gerry thank you for your kind,courteous professional manner.

Perfect company to do business with. They are super friendly and did a great job on our windows. I would absolutely recommend them and would definitely hire them again.

I found our experience was excellent from the estimate to the completed work. Jerry was able to provide the estimate and schedule the job to fit our availability. They showed up on time, removed windows, installed windows, completed the installation and cleaned in less than 90 min. We will definitely be calling back when we are ready to have our front picture window replaced. We highly recommend this company. It was a pleasure working with them.

The Granto Glass Block company arrived on time. They completed the installation job, cleaned up, and removed all debris.

Gerry, John, Frank and Joe were just awesome! I am definitely going to hire them again to replace garage windows. They were on time, courteous, friendly and cleaned everything up, wouldn’t even know they were here. If you need glass block these are the guys, I can’t say enough good things about them, just amazing! They even did trim for me and I love it. Looks way better than I ever imagined. Thanks so much! Can’t wait to see you all again soon.

I am completely satisfied and impressed with the professionalism shown by Jerry and his crew. They completed the work in a timely fashion and cleaned up perfectly. They were friendly and knowledgeable. My basement window replacement went easily and I would recommend them to anyone looking for a great job at a fair price.

They did an outstanding job from start to finish. Friendly and courteous when we first contacted them. Prompt for all appointments -- initial measurements and installation. Professional, competent, and efficient work on a challenging job in an old (1836) house. I recommend the company to anyone needing glass block work.

Pricing was great. Arrived on time and did a fantastic job! Windows look awesome!

Great value for fast professional service. Windows look great.

They were awesome! I called around for quotes they were one of the first to reply, give a quote, and install. I had 12 windows that needed replaced they were old and a few were leaking. They left zero clean up and very polite. I would use them again and recommend to everyone in a heartbeat!

Extremely satisfied with everything this company did for my Husband and I.5 vented windows put in and they look incredible.Mr. Granto was so polite and easy going.Fast service at a great price! Will definitely recommend you guys to family and friends.

I’m impressed with the promptness and professionalism of both obtaining the estimate and completing the job. Gerald did exactly what he said he would do from start to finish. On time & neat. Very pleasant to work with. I highly recommend his company.

Gerry Granto and his crew did a great job installing our 6 basement glass block windows. He was quick to get back to me and we were able to have our windows installed within 2 weeks. He and his crew were on time, polite, professional and efficient in installation and clean up. Great job!

Great prices. They did a really nice job on our windows. Didnt make a mess anywhere. Were in and out in no time.

Amazing prices and great customer service. Very helping and easy to work with! I will recommend everyone

Great service and fair price! 5 basement windows were replaced in 1hr. No mess left behind. Highly recommend these guys! Thank you!

This looks fraudulent but its true. Four reviews and we all give this guy a five. Likewise I called on Wednesday and I was handing him a check for a job well done by Tuesday the following week. Five basement windows, all custom sizes, most all with vents and one with a dryer fitting. Very fair price considering it took three people almost 3 hours when you count the estimate he did the week before. The finished job looks great and that cross breeze I get in the basement works better than any humidifier could.

Team was prompt with scheduling. Very professional, great job, They did an outstanding job on my glass block job.I will use Granto Glass for the rest of my windows when the time comes.. True craftsmanship is hard to come by, these guys do it right!

They were very fast, polite and tidy! Definitely will recommend!!

Relatable, punctual, professional and super knowledgeable.

They were professional and prompt with the installations of our glassblock windows. I called several companies and so happy we went with them. We had 14 windows done in a very old home. There prices were responsible and their work is superior. I highly recommend them.

Friends of mine loved the job they did.

We are very pleased with our windows. We had 8 windows replace and these guys did an awesome job. Very reputable company. We would Highly recommend them to anyone.

Very impressed with the professionalism, politeness and quality of the work. They were on time and finished sooner than they had predicted. If I ever need glass block work done they will be my only call

Granto Glass Block does quality work for a reasonable price. I am very satisfied with my new windows. They were professional and cleaned up completely. Highly recommended!

Jerry and his crew installed four vented glass block windows this past week for us and they were very courteous, professional and cleaned up after the job was completed. We would recommend them to anyone needing this service.

Quick, efficient and did an outstanding job. No mess left behind. Great price - HIGHLY recommend!

Had 6 windows installed, they did a great job. Price was great and they were done and cleaned up in around an hour. I would highly recommend them if your looking to get any glass block windows installed.

Excellent workmanship! Very happy with the whole process and extremely impressed with how fast they were!

Excellent service- very professional, high quality work, efficient and good clean up. Highly recommended.

Prompt call back, great price, installment was prompt and completed in an hour with my favorite part of the service- I didnt have any clean up after they were finished.... . .I highly recommend calling Granto Glass Block.....EXCELLENT

I had 6 glass block window- 2 with vents put in and they look great! I am very happy with the price, quality & promptness! I would highly recommend them! Thank you again!

Great service. On time, great customer service, very reasonable, would hire again!!! Thank you for you services!!

Great work on the Glass block windows that were installed. Thank you. Highly recommended

Jerry is awesome!!!!! I had them install 6 glass block windows in my commercial building and they look great. I would use again and recommend!!!!!!

Awesome crew and great price. Quick clean work.

Granto came in, put up 7 windows in my century home basement. 3 hours later they were cleaned up and finished. What a difference !!!

Super quick response, was scheduled within 1 week and a very fair price!

Great work and always on time great guys

Fast service, friendly workers, fast and great work.

Service and quality are excellent.

Great service!!

Great work!!!!!