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Serving Greater Buffalo

About Stanek Windows in Buffalo

2620 North America Drive
West Seneca, NY 14224
Buffalo Manager

Managed By Ron DeGraw

Local Reviews

We take pride in each and every window and door we manufacture and install. We offer quality materials and craftsmanship, but you don't have to take our word for it. Our satisfied customers are more than happy to share the positive experience they've had while working with Stanek Windows through the years.

Check out some local reviews or leave one of your own on the following websites:

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ʺThe men who installed my window were very professional. They did a great job on the install. They cleaned everything up very satisfied all around." – Jeff B., Irving, NY | August 24, 2019 * * * * *

ʺOur sales rep was prompt for our appointment; he was informative and professional yet seemed to have our best interests as his main priority." – Sandra S., West Seneca, NY | August 17, 2019 * * * * *

ʺThe process was straight forward. The sales rep came in and explained everything for us with examples of the windows. The installation went smooth with no problems and was pretty fast." – Joe P., West Seneca, NY | August 8, 2019 * * * * *

ʺThe installation team of Robert & Josh were excellent they were friendly, polite, and they went over everything from installation to how to take care of the windows." – Dennis M., Hamburg, NY | June 20, 2019 * * * * *

ʺThe installers were very professional. They did a great job installing the windows. When the job was done they cleaned up the work area. They also took time to explain the operation of the windows." – Jim M., Newfane, NY | June 13, 2019 * * * * *

ʺGreat window style and quality." – Anne M., Cheektowaga, NY | June 6, 2019 * * * * *

ʺI am very pleased with my new picture window. From the salesman coming out to the completion of the window, everyone has been super nice and any questions I had were answered. " – Colleen G., Cheektowaga, NY | June 6, 2019 * * * * *

ʺVery professional and courteous from first visit to job completion. Great staff!" – Jason D., Orchard Park, NY | May 20, 2019 * * * * *

ʺThe work was done sooner than originally set which I appreciated and it was all done in one day. The workers were very pleasant and courteous. Overall it was a very satisfying experience and I love the window and how they have transformed my home!" – Laurel W., Hamburg, NY | May 16, 2019 * * * * *

ʺVery happy with the entire process from the sale to the installation. Every aspect went quickly and smoothly!" – Joelle A., East Aurora, NY | April 26, 2019 * * * * *

ʺThe gentlemen who installed our windows, Keith, Rob and Sondro, did a beautiful job. They were friendly, efficient, and highly professional and we were very impressed with the work they did. Having done business with Great Day a couple of times before, we felt assured that we were in capable hands. We certainly appreciate your dedication to great work and customer relations." – Alice R., Boston, NY | April 17, 2019 * * * * *

ʺEveryone involved went above and beyond my expectations." – Josephine Y., Cheektowaga, NY | Janurary 15, 2019 * * * * *

ʺWorkers did an excellent job. We are completely satisfied. We like our windows very much!" – Shirley L., West Seneca, NY | December 28, 2018 * * * * *

ʺQuick and professional installation, great build quality. No complaints whatsoever." – Hilary H., Grand Island, NY | December 21, 2018 * * * * *

ʺVery happy with the work & professionalism!" – John D., Clarence, NY | November 29, 2018 * * * * *

ʺInstallers were very professional and courteous. They showed up on time and ensured all areas of work were cleaned when finish. We got proposals from 2 other window installers but Stanek had the best price and the best product. Want to thank Joe, our salesman as well. We were so pleased, we ordered additional Windows for the rest of the house. THANK YOU STANEK!" – Ramon G., Hamburg, NY | November 5, 2018 * * * * *

ʺGreat salesman and fantastic installers. They were on time and worked efficiently. Cleaned everything up when they were finished. I recommend them highly!" – Colette M., East Aurora, NY | October 25, 2018 * * * * *

ʺI am pleased with the style of windows and the employees who installed the windows were very pleasant and efficient." – Carol P., Elma, NY | September 21, 2018 * * * * *

ʺInstallers did a great job, we’re on time, very courteous and cleaned up all debris. The quality of the doors and window met my expectations. I would highly recommend this company." – Patricia H., Niagara Falls, NY | September 14, 2018 * * * * *

ʺLove the window...so glad i finally found a company to do just one window." – Cindy C., North Tonawanda, NY | July 26, 2018 * * * * *

ʺGood clean up and nice installers. Done in one day." – Michelle K., Kenmore, NY | July 23, 2018 * * * * *

ʺWindows are great. The whole process from estimation to installation was very well worth the investment." – Nancy K., Tonawanda, NY | July 12, 2018 * * * * *

ʺMy installers were excellent. Window itself is great." – Nancy D., Angola, NY | July 5, 2018 * * * * *

ʺThe windows look beautiful. The installers did a great job." – Isabella S., Cheektowaga, NY | June 29, 2018 * * * * *

ʺThey are friendly, very prompt and respond when called." – Lynn L., Buffalo, NY | June 28, 2018 * * * * *

ʺLooks so like the originals that even my daughter could not tell the difference until she looked closer. Like them very much." – Felicia L., Westfield, NY | June 21, 2018 * * * * *

ʺI am very happy with my Stanek windows and with every aspect of the process -- from the sales presentation al the way through the completed installation. Everyone was very professional and I really felt they had my best interests at heart." – Paul D., Grand Island, NY | June 14, 2018 * * * * *

ʺVery pleased with the amount of time they took to complete the job." – Maegan S., Lancaster, NY | June 14, 2018 * * * * *

ʺThis is an excellent product. The salesman was honest & helpful. The installation was incredible...what a refreshing & amazing work ethic. Totally professional & flawless." – Alina P., Town of Tonawanda, NY | June 14, 2018 * * * * *

ʺThe whole process was made easy." – Sue W., Depew, NY | June 12, 2018 * * * * *

ʺEverything went great. On time, hard working installers. I will recommend Stanek to all of my friends." – Mike C., Cheektowaga, NY | June 7, 2018 * * * * *

ʺProduct and installation were excellent." – Thomas R., Sanborn, NY | May 31, 2018 * * * * *

ʺI was happy with the quality of my doors and they did what they said they would. I am very happy." – Kathleen P., Batavia, NY | May 24, 2018 * * * * *

ʺOur design consultant was knowledgeable and very professional. I appreciated the fact that he was not pushy at all. The installation team was great! They cleaned up everything inside and out. The windows are fantastic!!" – Susan S., Williamsville, NY | May 24, 2018 * * * * *

ʺMy sales guy was great. The transaction was fast and easy. My install team was fantastic. They were speedy, neat, polite and did a great job." – Stacey J., Tonwanda, NY | May 23, 2018 * * * * *

ʺGreat windows! Install team very professional and nice!ʺ – Melissa M., Elma, NY | May 3, 2018 * * * * *

ʺTeam did a great job with the installation. Looks great.ʺ – Larry A., East Amherst, NY | April 26, 2018 * * * * *

"The salesman was great and the installers did a nice job and kept everything clean while they worked." – Jeff P., Kenmore, NY | April 23, 2018 * * * * *

"Excellent workmanship. Quick and clean installation. Couldn't be happier with our new window." – Robert S., Amherst, NY | March 31, 2018 * * * * *

"They came on time they were very personable they answered all my questions they put six windows in in an hour and a half in freezing weather and then spent the rest of the day caulking the outside and putting new trim and making them look beautiful I love them." – Betty D., Tonawanda, NY | January 27, 2018 * * * * *

ʺFrom our consult to installation everyone we dealt with were professional and accommodating. Great experience overall.ʺ – Ashley C., Buffalo, NY | January 25, 2018 * * * * *

“Had all new windows installed in October of last year and just wanted to say thank you for a great install, clean and properly done! Also very happy with our new windows!" – Ron S., Williamsville, NY | November 21, 2017 * * * * *

"The staff, from design, to measurement, to installation, were very helpful and professional. There was a minor delay because of a window that needed to be reordered, but they were very good about working with our schedule and finding a convenient time to come back and finish. Our windows look great!" – Rebecca W., Mayville, NY | January 16, 2018 * * * * *

“Had all new windows installed in October of last year and just wanted to say thank you for a great install, clean and properly done! Also very happy with our new windows!" – Ron S., Williamsville, NY | November 21, 2017 * * * * *

“Installation went smoothly. They look great." – Cindy H., Cheektowaga, NY | October 14, 2017 * * * * *

ʺThey are friendly, very prompt and respond when called." – Lynn L., Buffalo, NY | June 28, 2018 * * * * *

“The workers were very friendly and professional. They cleaned everything up after they completed the work. They did a great job." – John B., Hamburg, NY | October 12, 2017 * * * * *

“Salesman was very professional in his presentation answering all questions without trying to oversell something not needed. The installers were very through with their installation. All measurements were checked twice for fit and balance. The work areas were covered before installation and left spotless when done. They walked me though and ask if there were questions before leaving." – Rich S., North Tonawanda, NY | October 8, 2017 * * * * *

“The door and final product are excellent. Contractors were excellent. Sales person was excellent.” – Keith K., Buffalo, NY | September 28, 2017 * * * * *

“The salesman Joe was excellent, being thorough and answering all our questions with an excellent demo. The two men, Rob and Keith, did a GREAT job installing our windows. Very conscientious about clean-up and attention to detail. Thank you.” – Pam M., Lockport, NY | September 16, 2017 * * * * *

“Great experience from day one. Bill and Dan the installers were very good.” – Ray H., South Cheektowaga, NY | September 14, 2017 * * * * *

“Just offering a belated compliment. We had 5 windows installed by your company in June 2017. The entire experience was great and we are very satisfied customers. The windows themselves look fine, are easy to operate and are a significant upgrade to our house. Joe D., our son-in-law works for you and did the measurements. He always has positive things to say about your products and clearly knows his profession. The fellows who installed the windows were prompt, professional, did a great job and left the place spotless. I expect we may have some future work for you and have recommended Stanek Windows to our friends and associates.” – Anthony N., East Aurora, NY | September 11, 2017 * * * * *

“We were quite pleased with the workers/installers. Even our consultant was very knowledgeable, friendly and very pleasant to work with. They did an awesome job on our patio. They cleaned up after each day’s work. Simply the best!! The only downer was the appointment date for the project.” – Billy B., Amherst, NY | September 1, 2017 * * * * *

“Installers were very professional and did an excellent job. Everything looks great!” – Joseph C., South Cheektowaga, NY | August 29, 2017 * * * * *

“My salesman Joe was great. He was honest and sincere which I really appreciated. The installers were also great. They were very efficient but never rushed the job. They were respectful of my home and knew their job so I couldn't have asked for a smoother install. The quality of the windows was excellent just as I expected after all of the research that went into choosing Stanek. I would highly recommend Stanek to anyone who wants one of the absolute best windows on the market today. They look and perform great, the price was reasonable and at the install was perfect so as far as I'm concerned, that's what's most important.” – Mike T., North Tonawanda, NY | August 24, 2017 * * * * *

“Everything was done in a professional manner.” – Lynn L., Lackawana, NY | August 3, 2017 * * * * *

“We were very pleased with our purchase, both the product and the installation. The windows themselves are great, and the installing team was fantastic - of all the times we've had work done on our home no one has been as professional! They were punctual, did quality work, cleaned up as they went, and even made sure to drape a drop-cloth over our baby's crib! We could not be happier. Thank you!” – Walter C., Buffalo, NY | July 28, 2017 * * * * *

“The windows installed in our family room and the new sliding door to our deck are wonderful upgrades to our home. The quality of products and the professional installation have made a difference in the ambiance of our home. – Bob G., Williamsville, NY | July 25, 2017 * * * * *

“The window is beautiful. Everyone I dealt with was very knowledgeable and professional.” – Linda D., Tonawanda, NY | July 22, 2017 * * * * *

“The salesman worked hard to get me exactly what I wanted in color and style. The workmen were punctual and worked until completed. I love the color. Many neighbors have given me compliments.” – Barbara S., Hamburg, NY | July 14, 2017 * * * * *

“Windows look and operate great. The installers were neat and very professional.” – Barry B., Buffalo, NY | July 9, 2017 * * * * *

“The quality is excellent. The installers were very polite, clean and careful.” – Mary F., Orchard Park, NY | June 29, 2017 * * * * *

“Workers were extremely professional and polite.” – William K., Grand Island, NY | June 29, 2017 * * * * *

“Very happy with the [Stanek] windows. The installers did an excellent job.” – Debbie S., West Seneca, NY | May 7, 2017 * * * * *

“The salesman was fantastic and the installers were fast and professional.” – Stephanie E., Buffalo, NY | May 4, 2017 * * * * *

“Everything went smoothly and the workers were courteous.” – Susan H., Buffalo, NY | April 17, 2017 * * * * *

“Excellent service, expert installation and a very professional and courteous staff. Joe was great and always there to help with my questions.” – Supriya M., Buffalo, NY | March 9, 2017 * * * * *

“The installers were fast, friendly and clean.” – Adam S., Buffalo, NY | January 30, 2017 * * * * *

“Stanek was on time, polite, efficient and cleaned up in a good time.” – Amos A., Depew, NY | January 5, 2017 * * * * *

“The completed work looks great. The supervisor was excellent with suggestions and workmanship, as were the others assisting him. They were neat and courteous.” – Ray P., East Aurora, NY | December 9, 2016 * * * * *

“The windows are of great quality, the installation was more than expected and the sales person was more than helpful explaining all the questions we asked. Love the [Stanek] windows as does my wife. Thank you.” – Ronald S., Williamsville, NY | November 18, 2016 * * * * *

“I was very pleased with all aspects of the project. The project was held up a bit due to a measuring problem but Brian, the GM, went above and beyond to make sure we were satisfied and the project was completed in a timely fashion. The [Stanek] windows looks great inside and out.” – Roger D., Williamsville, NY | November 3, 2016 * * * * *

“The two crews were courteous, on time and very professional. The products appear to be good quality with quality workmanship.” – Nick M., Williamsville, NY | November 3, 2016 * * * * *

“Very satisfied.” – Kevin D., Holland, NY | October 20, 2016 * * * * *

“Your installers were EXCEPTIONAL. We have dealt with three other contractors for other work in our home all in the same month, and none came close to the clean, quiet, professional, courteous service we received from your installers. They had every window in our home replaced without a hitch in a day and a half. The windows are top quality and add so much value to our home. If I had one issue, it would be that our sales person made a few promises he couldn't keep. We were looking to have the kitchen windows in BEFORE a kitchen remodel. He told us that this wouldn't be a problem and we counted on that. Unfortunately, our order couldn't be separated to have the kitchen windows ready in time and they had to be installed after the kitchen was done, causing issues with some very expensive tile work we had done. I just wish there had been better communication on the kitchen window install. We might have been able to avoid expensive repairs that way. Otherwise, we are extremely happy with Stanek and will recommend them to all our friends and family.” – Patrick L., Buffalo, NY | October 6, 2016 * * * * *

“Very satisfied with [Stanek] windows and the installers. It was a nice, clean job and very informative.” – Jim N., West Seneca, NY | September 2, 2016 * * * * *

“Great employees. Very knowledgeable and hard working. Polite and respectful. Cleaned up everything. Installation was done very professionally.” – Richard A., Alexander, NY | September 1, 2016 * * * * *

“The quality of the [Stanek] windows and the installation process met my expectations. I expected a lot and received it.” – Drew K., Buffalo, NY | August 5, 2016 * * * * *

“The men who came to replace our 3 windows ran out of molding for one of the bedroom casement window. That window is unfinished and we have not heard any updates yet as to when they will return to our home to complete the project. The new bay window at the front of our home really worked out well and we're happy with the final product. It opens up the whole room.” – Jim B., Buffalo, NY | July 8, 2016 * * * * *

“The sliding glass door was exactly what we wanted. Sales and service was excellent, friendly and professional.” – Mark S., Buffalo, NY | June 30, 2016 * * * * *

“The triple-pane windows are great. Joe D. did a nice job trying to make sure we got what we wanted. I especially appreciated the professionalism of the gentleman in charge of the crew who put the windows in this spring. However, I do wish the work crews were consistent day to day. There were a lot of different people in my house from one day to the next. I would have appreciated the more consistency. Lastly, I was not initially happy with the woodwork that was replaced. They made it glossy when I was expecting more of a flat finish. However, they did make it right in the end.” – Pam R.,Orchard Park, NY | June 28, 2016 * * * * *

“Window design service was very good. The [Stanek] windows arrived on time and were professionally installed when promised. One issue with one of the windows (middle pane arrived with a crack) was addressed quickly and professionally.” – Patrick M., East Aurora, NY | June 20, 2016 * * * * *

“Joe did a great job in finding out exactly what I wanted for my large front picture window and bedroom window. He spent a few hours with me and we came up with exactly what I wanted and that's what was delivered. The [Stanek] windows not only look great, they function very well. I have to give a shout out to the installation team who came on time and did a very professional job in installing the windows. They took care of the old windows and cleaned up all the debris. Thank you very much.” – John R., Buffalo, NY | May 26, 2016 * * * * *

“The installers came and put the [Stanek] windows in quickly. They made sure that everything was level. Once the window was installed, they completely cleaned up any installation mess. One would never know that a window was installed. Very pleased with the whole process from purchase to installation.” – Robert K., Cheektowaga, NY | May 26, 2016 * * * * *

“Wonderful windows!” – John H., Tonawanda, NY | May 19, 2016 * * * * *

“It would have been highly satisfied because the [Stanek] windows are beautiful and were skillfully installed but when we asked for a breakdown of the cost per window because we were sharing the cost, we did not receive it. This was our second purchase within 6 months.” – Maureen O., Cheektowaga, NY | May 5, 2016 * * * * *

“Everything worked out great. The [Stanek] windows look great; the service was great, and the salesman, Joe Dawidowicz, was a very nice guy.” – Bob W., West Seneca, NY | April 20, 2016 * * * * *

"Very satisfied! The installer was so efficient and neat. No leftover mess." – Kathleen C., Buffalo, NY | February 4, 2016 * * * * *

"The [Stanek] windows are top quality. The installers were very professional and helpful. They sent out a painter the next day for small touch ups which you could hardly see but the installers saw it and got right on it. We had a minor issue with closing the windows and they came and fixed it right away. Awesome!!" – Nancy J., Cheektowaga, NY | November 17, 2015 * * * * *

"Great!" – Richard E., West Seneca, NY | November 7, 2015 * * * * *

"Our installation teams were superior! Knowledgeable and tidy. Wonderful!" – Jerrine N., Williamsville, NY | November 6, 2015 * * * * *

"The installation and window product exceeded my expectations." – Joan C., East Amherst, NY | October 22, 2015 * * * * *

"Workers were quiet and professional. The finished work was very good." – Matthew G., Buffalo, NY | October 22, 2015 * * * * *

"Our [Stanek] windows were installed neatly, quickly and very professionally. The three gentlemen that did the work in our home were very efficient and were very respectful of our home. Everything was left in the same condition when they left as it was when they started. Actually one screen had a small hole in it and it was replaced that same day within hours of the install. They took time to make sure we knew how to operate our new windows before they left." – Michael D., Niagara Falls, NY | October 1, 2015 * * * * *

"Nice looking [Stanek] windows. Only thing I’m not totally satisfied with is they don't seem to slide open and close very smoothly right now." – Scott S., West Seneca, NY | September 17, 2015 * * * * *

"The initial quote was handled very professionally. The updates to the installation was handled the same. The four hour installation and the window itself was VERY satisfactory. The men worked well together (Joe, Ted and Craig), were polite, extremely neat and stuck to their work. I am telling everyone how pleased I am, and would definitely tell anyone in need of windows, to call your company." – Sandra H., West Seneca, NY | September 3, 2015 * * * * *

"I want to wait until winter to make a determination on my satisfaction. We'll see how weather tight these [Stanek] windows will be. Right now they look and perform well, but the colder weather will be the barometer of my satisfaction." – Bill K., South Wales, NY | August 28, 2015 * * * * *

"The entire transaction was very simple and the sales person as well as the installer were very professional and courteous. I will definitely be doing business with your company again." – Marcus F., Eden, NY | August 7, 2015 * * * * *

"The new windows look fabulous. The installers did a very professional and thorough job. The final product is great and the attention to the finish details was excellent." – Douglas L., Silver Creek, NY | July 23, 2015 * * * * *

"I could not make one complaint. All promises were kept. My project was completed sooner than expected. My sales representative, Joe, was a true professional. The two installers were amazing as well." – Terence R., Lockport, NY * * * * *

Products & Services

Patio Enclosures

Patio EnclosuresPatio Enclosures custom manufactures every sunroom to meet your style and budget. Let our design consultants work with you to see what's best for your home and lifestyle.

Stanek Windows

Stanek Windows by Great Day ImprovementsIncrease the energy efficiency of your home and reduce energy bills with the highest quality replacement windows and doors.

Backyard Solutions

Backyard Solutions by Great Day ImprovementsImprove your outdoor space. Add shade, beauty and practical solutions that enhance your enjoyment of your backyard.

Specials & Financing

Stanek Windows is dedicated to making our products and services affordable for our customers. As a result, we try to present offers and specials throughout the year, so check back often or follow us on Facebook.

About Us

About Stanek Windows in Buffalo

We proudly serve all of Western New York including Buffalo, Niagara and Jamestown. Contact our Buffalo showroom for your next Stanek Windows project or simply fill out our online form to schedule your free in-home estimate.

Hours of Operation

  • Monday
  • Tuesday
  • Wednesday
  • Thursday
  • Friday
  • Saturday
  • Sunday
  • 8 a.m. - 3 p.m.
  • 8 a.m. - 3 p.m.
  • 8 a.m. - 3 p.m.
  • 8 a.m. - 3 p.m.
  • 8 a.m. - 3 p.m.
  • By Appointment
  • By Appointment

Certifications & Associations

  • Remodeling 550 (#17)
  • Qualified Remodeler's Top 500 of 2017 (#24)
  • HIP 200 of 2017 (#21)
  • Qualified Remodeler's Top 500 of 2016 (#21)
  • HIP 200 of 2016 (#18)
  • Qualified Remodeler's Top 500 of 2015 (#22)
  • HIP 200 of 2015 (#19)
  • EPA Lead-Safe Certified Firm
  • Licensed, Bonded, Insured

Payment Options

Greater Buffalo Location

Stanek Windows by Great Day Improvements is now operating in the Buffalo, NY area. We are proud to have installed over 4000 sunrooms in the seven counties of Western New York over the past several years. We are proud to now offer Stanek Windows which we custom design and expertly install for our customers.

In addition to our Branch Management Team, we offer a Design Staff of four with over 50 years combined design experience and 30 years of installation experience. We also have five installation crews that are factory trained and certified to ensure a professional and timely installation of your project. It is our goal to exceed your expectations!

In addition, we also offer Ultra Aluminum Railings, Provia Doors, Amish Designers Gazebos and Timbertech Decking. Over the next year, we will be adding additional products and services to continue our commitment to our customers!

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