Reviews
This profile includes reviews for Cornerstone Building Brands's headquarters and its corporate-owned locations. To view all corporate locations, see
Customer Review Ratings
Average of 108 Customer Reviews
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Review fromTimothy F
Date: 07/15/2025
1 starTimothy F
Date: 07/15/2025
We put request in for 3 ***lacement windows under warranty. We started in 2022 and have not received any return calls. We were told our *** would be taking care of the matter. 6 vm later no response. All documentation pictures were sent as requested. I am in a community with homes also had a problem with cornerstone ply gem windows. I need a number where I can talk to someone! No response with emails sent. Help
Cornerstone Building Brands
Date: 07/21/2025
Mr.*******,
We sincerely apologize for the issues youve experienced with your windows and the delays in resolving your concerns. You can reach out to our customer support center at ************ with your contact information and any additional details pertaining to your prior claim. This will allow us to better assist you and address your concerns promptly. We value your business and look forward to resolving this matter to your satisfaction.
Thank you.
Cornerstone Building BrandsReview fromRobert R
Date: 06/23/2025
1 starRobert R
Date: 06/23/2025
We started the process of attempting to have a warranty claim on serveral windows back in November of 2022. We started by reaching out to the dealer that sold our builder the windows. After many many months of no response, we reached out again in March of 2024. A file was claimed and windows were delivered however the windows were the incorrect style and size for what is in our home. Fast foward and a representative from Conerstone Building Brands did a site visit, remeasured and reordered. We have been reaching out repeatedly to ******* ******** trying to get resolution.. All we get is pushback, delays and basically no resolution or the windows we are owed. It is appears to be a constant mix of ********************, communication and basically a stall tactic for Cornerstone to adhere to our warranty.Cornerstone Building Brands
Date: 07/22/2025
Mr. *************** sincerely apologize for the issues youve experienced with your windows and the delays in resolving your concerns. To assist you further, we kindly ask that you reach out to our customer support center at ************ with any details pertaining to your prior claim. If you have a reference number for the original case or any relevant information from the installation, such as date, or who performed the work, this will allow us to better assist you and address your concerns promptly. We appreciate your patience and are committed to addressing this matter thoroughly.
Thank you.
Cornerstone Building BrandsReview fromGerald B
Date: 05/14/2025
1 starGerald B
Date: 05/14/2025
Very unhappy that they arbitrarily decided to start charging shipping on defective windows on 4/1/25 related to the lifetime warranty that was purchased with them.Cornerstone Building Brands
Date: 05/23/2025
Mr. ******,
Thank you for sharing your feedback. We sincerely apologize for any frustration our shipping policy may have caused. Our goal is to provide the best possible service.
Please reach out to our customer service team so we can review your specific situation,your satisfaction is very important to us.
Thank you.
Cornerstone Building BrandsReview fromJennifer S
Date: 05/02/2025
1 starJennifer S
Date: 05/02/2025
Have been attempting, since the end of October 2024, to get the top half of a new window ***laced, due to a defect in the glass. I submitted the appropriate information and paid for shipping. Over a month later, I hadn't received the ***lacement so I called Cornerstone. The *** said there was a glitch in the order to the factory, thus my window wasn't manufactured. They reordered and I received the ***lacement in January 2025. Turns out the wrong half of the window was sent! I promptly called Cornerstone. They reordered (again) and said the ***lacement would be shipped after April 4. I phonedCornerstone today, May 2, to ask about our order. The *** said, after researching our claim, that the estimated ship date should have been March 31. She also said she would contact the warehouse and respond to me in three business days. The ***lacement process began in October 2024, and as of today, May 2, 2025, I do not have what I ordered.Cornerstone Building Brands
Date: 05/08/2025
We sincerely apologize for the inconvenience caused by this ongoing issue. Due to an internal system error, your order was not shipped as intended. We have now placed a new order, which is scheduled to ship on Monday, May 12th. Our management team is actively monitoring the production process to ensure timely delivery. Additionally, we have processed a refund of the $40.00 shipping charge. Please note that it may take 7-10 business days for the refund to reflect on your account.
If you have any further questions or concerns, please do not hesitate to contact us.
Thank you.
Cornerstone Building BrandsJennifer S
Date: 05/14/2025
Thanks to BBB's involvment, I received the window today. Unfortunately, it is (again) the wrong half of the window. Also, unfortunately, my rating will not change.Review fromH. K.
Date: 04/03/2025
1 starH. K.
Date: 04/03/2025
Been working with them on same warranty claim for 2 years. Impossible to get anyone on the phone.Cornerstone Building Brands
Date: 04/18/2025
Mr. ***************** you for sharing your feedback. We understand your frustration with the extended timeline and appreciate the opportunity to provide an update.
Following your recent site visit, our technician met with your installer on April 10, 2025, to review the situation in person. It was confirmed that the replacement sashes are the correct sizes, though there are style differences due to updates in product design. Our technician provided hardware, including 10 pairs of hinges and hinge tracks, and reviewed installation guidance with your installer.
Were pleased to hear that you found the visit helpful. Additionally, we are processing a few additional parts you requested to ensure the installation moves forward smoothly.
If you have any further questions or need additional assistance, please don't hesitate to reach out.
Thank you,
Cornerstone Building BrandsH. K.
Date: 04/19/2025
Yes - the person who is helping me know (*******) js great and totally on top of it. Thanks.Review fromLisa W
Date: 03/28/2025
1 starLisa W
Date: 03/28/2025
Company is hard to work with, trying to have a window replaced. They are just giving me the run around. Will never buy from this company again.Cornerstone Building Brands
Date: 04/18/2025
Ms. **************** you for sharing your feedback. We apologize for the frustration youve experienced during this process.
To update you, your warranty claim was submitted on March 4, 2025. After your shipping and handling payment was received on April 4, your replacement order was processed on April 7. Your replacement was scheduled to ship on April 14, 2025.
We appreciate your patience and are committed to ensuring you receive your replacement promptly. If you have any further questions, please dont hesitate to reach out.
Thank you,
Cornerstone Building BrandsReview fromGregory Z
Date: 03/05/2025
1 starGregory Z
Date: 03/05/2025
I bought ply-gem windows through a contractor APCO in ********, ****. After several attempts to keep the windows from leaking air APCO agreed to replace my new windows with more new windows. The second set were worse than the first. The Cornerstone **** came out said the installation by APCO was very good and he sent my situation up the ladder to get a decision on what should be done to correct the problem. The response was that there were no visible defects in the windows and that Cornerstone would not do anything to correct the situation. So I now have 22 poor quality Ply-gem windows and I want to let future buyers know to be ware.Cornerstone Building Brands
Date: 03/10/2025
Mr. **************** you for sharing your feedback. We understand your frustration and regret that your experience did not meet your expectations.
Following a thorough site inspection, it was determined that there were no visible manufacturing defects present in the windows. This information was communicated to you, and an obligation letter was sent to clarify our position. Based on the findings, we concluded that no further action could be taken regarding your claim.
We understand this may be disappointing, but we appreciate you bringing this matter to our attention. If you have additional questions, please feel free to reach out.
Thank you,
Cornerstone Building BrandsReview fromMatt D
Date: 02/03/2025
1 starMatt D
Date: 02/03/2025
Had windows installed and they do not work correctly. Bad windows but atrium will not replace them. They have walked away with my money and no issues have been solved. Do not purchase windows from this so called company. Poor customer satisfaction. Would give a zero star but you cant.Cornerstone Building Brands
Date: 02/06/2025
Mr. *****,
Thank you for sharing your feedback. We regret to hear about your dissatisfaction with your windows and the service provided. We take your concerns seriously and would like to clarify the efforts made to address your issues.
Our records show that we have performed multiple site visits and services on your windows, including installing heavy-duty weather stripping, replacing flag seals, and ensuring that the windows meet the required standards for functionality and performance. As of June 5, 2024, all necessary adjustments and tests were completed, and the claim was marked resolved.
We understand your frustration, but at this point, we have exhausted all available steps to address the concerns and are confident the windows meet tolerances. If you feel there are unresolved issues, we encourage you to provide additional information, and we would be happy to review further.Thank you,
Cornerstone Building BrandsReview fromLouis B
Date: 01/21/2025
2 starsLouis B
Date: 01/21/2025
******** Windows has made it impossible to successfully complete a product defect claim. While initially accepting submitted relevant information and photos of the defective product, they do not follow up or even respond to emails or phone calls. They simply fail to respond. I would not recommend that anyone attempt to do honest business with this company.Cornerstone Building Brands
Date: 01/27/2025
Mr. ******************** you for sharing your feedback, and we apologize for the frustration youve experienced with your claim.
Regarding your case, our team initially requested product labels to verify the windows and process your claim, but we did not receive the necessary information. However, a new case (PG-2889064) has recently been submitted, and our Customer Success team will contact you soon to assist with this matter.
We are committed to working with you to resolve your claim as efficiently as possible. If you have any questions or additional details to share, please dont hesitate to provide them.
Thank you,
Cornerstone Building BrandsReview fromMarsha C
Date: 01/20/2025
1 starMarsha C
Date: 01/20/2025
I want to give them Zero stars concerning their ******** window manufacturing and customer service. $23K and ************************* later, I have windows that were made wrong and weve been in an unproductive dialogue with them through Famous Supply (resellers) since early September. As a result OUR RENOVATION PROJECT CAME TO A HALT. We went with ******** because of the reputation and quality of their windows. Unfortunately, we have not experienced that.I will get an answer and a resolution one way or another. Just want to WARN OTHERS to steer clear of these windows.Cornerstone Building Brands
Date: 01/21/2025
Ms. **************** sincerely apologize for the issues youve experienced with your windows and the delays in resolving your concerns.
To assist you further, we kindly ask that you provide an order or reference number. You can submit this information at ***************************************************, and our team will begin researching your case right away.
Thank you for bringing it to our attention, and we look forward to assisting you.
Thank you,
Cornerstone Building Brands
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