Business Profile

Building Materials

Cornerstone Building Brands

Headquarters

Complaints

This profile includes complaints for Cornerstone Building Brands's headquarters and its corporate-owned locations. To view all corporate locations, see

Customer Complaints Summary

340 total complaints in the last 3 years.
101 complaints closed in the last 12 months.

If you've experienced an issue

Submit a Complaint

The complaint text that is displayed might not represent all complaints filed with BBB. Some consumers may elect to not publish the details of their complaints, some complaints may not meet BBB's standards for publication, or BBB may display a portion of complaints when a high volume is received for a particular business.

Initial Complaint
Date:11/24/2025
Type:Service or Repair Issues
Status:
ResolvedMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
Filed warrantee claim for window fogging (year 8 of 10 year warrantee). Claim accepted. Informed replacement window would be shipped within 4 weeks (per email dated 08/25/25). Attempted to contact them in October and November, no response as of 11/24/25, three months after e-mail. Details:Your case number is: PG-REMOVEDThe new order number is: REMOVEDPlease allow up to 4 weeks for delivery.
Business Response
Date: 12/05/2025
Mr.REMOVED,
Thank you for reaching out. The product order was not released at the plant, which is why you haven't received it yet. You should have received an email from our customer support team today with the details of your order.

Please check your email, and if you have any further questions or need assistance,feel free to contact us.

Thank you for your patience and understanding.

Cornerstone Building Brands
Customer Answer
Date: 12/08/2025

Better Business Bureau:

I have reviewed the response made by the business in reference to complaint ID REMOVED, and find that this resolution is satisfactory to me.

Sincerely,

REMOVED
Initial Complaint
Date:11/19/2025
Type:Service or Repair Issues
Status:
AnsweredMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
First, we understood the warranty to say Installation not covered on these windows, which is sad because we paid for the original installation and painting. Two of the 15 windows installed are now fogging up from gas escaping Unfortunately, these windows are no longer made by Ply Gem previously own another claim for different set of windows, the sash was sent, and there was no installation charges involved because we just slipped these in that time now we are filing the latest claim and now the company is saying we only cover glass because the window sash which they sent earlier for the other claim, is no longer made and you have to pay to have the piece of glasses put in because we dont cover installation, which previously meant the whole window installed. Now in my opinion, the warranty still exist as it was,even though the windows dont. we received a price from a business that will put the glass in if we receive it from Ply Gem for almost $700 for two windows that is more than the window probably cost originally and Lord help us if the other 13 windows go REMOVEDthe company that we bought them from who sells this window offers to pay half still leaving us with a bill of almost $400!!! we tried to work this out by calling REMOVEDand the man that my husband talked to spoke to him so disrespectful I just cannot believe it and my husband just wanted to explain the situation I contacted them on their instant message through REMOVEDagain and the lady said she would send this to a supervisor, Lord knows how long-well have to waitPly Gem since they no longer make this window through thru No fault of mine needs to take care of the price of putting the glass in the sash. Ihave no doubt the installation wording meant installing a window, not putting glass and a sash again if the window was not discontinued, obviously because it was horrible window, we would have a sash with the glass sent to us, and we would simply pop it in
Business Response
Date: 12/02/2025
Mr.REMOVED,
Thank you for bringing your concerns to our attention. As a one-time courtesy, we will be offering reimbursement for the installation. We are currently ordering the replacement glass and will provide you with the glass itself along with a check covering the quoted installation amount.

Please feel free to contact us if you have any further questions or need additional assistance.

Thank you.
Cornerstone Building Brands
Initial Complaint
Date:11/17/2025
Type:Service or Repair Issues
Status:
AnsweredMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
I purchased my home in 2019 and over the last year 3 widows have shown signs of broken seals. The widows are under warranty and I filed a claim via the portal with explanations, photos, and additional requested information. The last correspondence was in September and I have requested an update to my claim several times and have received no reply. I was dealing with a representative REMOVEDand my request for updates have gone unanswered. I would like an update to my claim and schedule someone to repair the seals on my windows.
Business Response
Date: 12/02/2025
Mr.REMOVED,
Thank you for reaching out and sharing your concerns. We sincerely apologize for the lack of communication you experienced. We are currently processing your claim concerning the three windows. However, please note that the hinged patio door in question is not a Cornerstone Building Brands product.

If you have any further questions or need additional assistance, please do not hesitate to contact us.

Thank you.
Cornerstone Building Brands
Initial Complaint
Date:11/17/2025
Type:Service or Repair Issues
Status:
ResolvedMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
we have a 3 year old house which was built during the window shortage. We have one window that is fogged between the glass and one sliding door panel 36x96 with what looks like mold between the glass. I have properly completed forms, I have both ref# and ID#. I have called to check and was told it takes 6 weeks and my last phone call told me I was in the queue and they will get to it.Window Ref REMOVEDand ID# REMOVEDDoor Ref REMOVEDand ID# PG REMOVED
Business Response
Date: 12/09/2025
Ms.Antonowski,
Thank you for your patience. We are currently processing your warranty claim and will be ordering a bottom sash for you. Please note that the patio door in question is not a Cornerstone Building Brands product.

If you have any further questions or need additional assistance, please do not hesitate to contact us.

Thank you.
Cornerstone Building Brands
Customer Answer
Date: 12/10/2025

Complaint: 24151468

I am rejecting this response because:

Sincerely,

REMOVEDAntonowski
Customer Answer
Date: 12/11/2025
Although I am satisfied with the window the sliding door panel is also a PlyGem product confirmed by the builder, 84 Lumber the distributor and he photo of the sticker affixed to the door frame which was sent to them.
Business Response
Date: 12/17/2025
Ms.Antonowski,
Thank you for the follow up. Our customer support team has confirmed that the door has been added to your warranty claim order. We will be sending the stationary door panel along with the bottom sash for the window.

Please feel free to reach out if you have any further questions.

Thank you.
Cornerstone Building Brands
Customer Answer
Date: 12/17/2025

Better Business Bureau:

I have reviewed the response made by the business in reference to complaint ID REMOVED, and find that this resolution is satisfactory to me.

Sincerely,

REMOVEDAntonowski
Initial Complaint
Date:11/12/2025
Type:Billing Issues
Status:
AnsweredMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
I am writing to bring to your attention a fraudulent account that has been opened in my name . I am a victim of identity theft and did not authorize the opening of this account. Below are the details of the fraudulent account:Creditor Name: CORNERSTONE Opened Date: 2/16/2017 Account Number: REMOVEDI kindly request that you close this account immediately and remove any negative information associated with it from my credit report. Additionally, I would appreciate it if you could provide confirmation of the account's closure and any relevant documentation related to the fraudulent activity.
Business Response
Date: 11/12/2025
Taishiera,

Thank you for contacting us. We would like to clarify that we are a building products manufacturer and have no connection to the account mentioned in your REMOVEDappears this issue should be addressed to a different organization that has a similar name.

We are not associated with the account details provided and are not involved in any credit or financial services. We suggest reaching out to the relevant financial institution or credit bureau to resolve this matter.

Thank you.
Cornerstone Building Brands
Initial Complaint
Date:11/12/2025
Type:Product Issues
Status:
AnsweredMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
The windows leak when it rains and the screens are coming apart. I am totally dissatisfied with the windows. Ive been trying to get this resolved since July 2025. I called Lowes and they told me to call the installer. I called the installer and they told me to call Lowes. I called a Lowes again and was told to submit claim online. Its been more than 7 days and no response. I want my money back. Im totally dissatisfied with the product and I want my money back.
Business Response
Date: 11/24/2025
Ms.REMOVED,

We appreciate you reaching out and bringing this issue to our attention. We understand your frustration and have been committed to working with you to find a solution. Our technician visited your home on November 20th and successfully sealed the window without any voids.

If you have any further concerns or need additional assistance, please don't hesitate to contact us.

Thank you.
Cornerstone Building Brands
Initial Complaint
Date:11/11/2025
Type:Service or Repair Issues
Status:
ResolvedMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
Several windows in our home have faded and we file a claim with Ply Gem Cornerstone Building and they sent us replacement windows. In May, we noticed another window faded and we contacted REMOVEDand she told us to file another claim. We did and never heard back. Finally, REMOVEDasked us to resubmit the picture and label again. We never heard from Ms. REMOVEDagain after a dozen attempts. We called the corporate office and was told to contact the supervisor REMOVED. We left several messages and sent an email, but haven't heard back.
Business Response
Date: 11/24/2025
REMOVEDand Mrs. REMOVEDyou for bringing this issue to our attention, and we apologize for the lack of communication you experienced. Your warranty request has been successfully processed, and you can expect delivery by December 2nd.

If you have any questions or need further assistance, please do not hesitate to contact us directly.

Thank you.
Cornerstone Building Brands
Customer Answer
Date: 11/24/2025

Better Business Bureau:

I have reviewed the response made by the business in reference to complaint ID REMOVED, and find that this resolution is satisfactory to me.

Sincerely,

REMOVEDAnd REMOVED
Initial Complaint
Date:11/11/2025
Type:Service or Repair Issues
Status:
AnsweredMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
One of my Ply Gem windows is collecting dirt between the 2 panes of glass. I looked online to determine if I had a warranty on the window. I completed claim form on Oct 19th, case # PG-REMOVED-Q4V2G2 (received an auto reply via email). Upon hearing nothing further, I sent follow up emails on Oct 26th and again Oct 30th. I also went to Ply Gem's web page and completed a "contact us" email form asking for some follow up. So far, zero response from REMOVEDor their parent company Cornerstone. I believe my window is covered by the warranty and I'm seeking the replacement window panel (lower, moveable part of the window). Pictures were uploaded as part of original warranty claim.
Business Response
Date: 11/24/2025
Mr.REMOVED,
Thank you for reaching out. We would like to inform you that your case is currently on hold while awaiting the payment for the shipping fee. We have received your response indicating that you will be returning to the home address on December 1st and plan to make the payment at that time.

Please feel free to contact us if you have any further questions or need additional assistance.

Thank you.
Cornerstone Building Brands
Initial Complaint
Date:11/06/2025
Type:Service or Repair Issues
Status:
ResolvedMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
On November 13, 2024, I purchased a Reliabilt sliding glass door (model REMOVED) from Lowes, which was professionally installed and has been in normal residential use since that date.On October 23, 2025, less than a year after purchase, the exterior glass pane of the sliding door spontaneously shattered in the middle of the afternoon. The weather was calm no wind, impact, or visible damage occurred and the glass simply exploded outward on its own. The incident was both shocking and dangerous.I immediately contacted Lowes, who escalated the issue to Atrium Windows and Doors, the manufacturer of the Reliabilt product line. Despite the failure clearly occurring within the one-year warranty period, Atrium refused coverage, claiming this was an act of God.That explanation is unacceptable. There was no external force, impact, or misuse this was plainly a manufacturing defect or material failure. To deny warranty coverage under these circumstances is inexcusable and inconsistent with both product warranty obligations and reasonable consumer expectations.I am requesting that Atrium Windows and Doors and Lowes work together to provide a full replacement of the defective exterior glass panel at no cost.Additionally, I ask that Atrium issue a written acknowledgment that such spontaneous glass failures will be treated seriously in the future, as they present a significant safety hazard to homeowners.Desired Resolution:Free replacement of the defective exterior glass panel (Reliabilt Model REMOVED).Written confirmation that the incident is covered under the one-year warranty.Acknowledgment that spontaneous glass failures will be addressed responsibly going forward.Attachments:Lowes purchase receipt from November 13th, 2024 Photos of the shattered exterior glass showing no impact damage Copies of correspondence with Lowes and Atrium regarding the claim
Business Response
Date: 11/21/2025
REMOVED,

Thank you for reaching out and providing detailed information about your experience.We understand how concerning and dangerous this situation must have been.

Please be assured that we have created a new case for your incident, case number PG-REMOVED-B8S5Z6. Our customer support team has reached out to you directly requesting pictures, which will help us in thoroughly investigating your claim.

We are committed to resolving this issue promptly and want to ensure you receive the appropriate resolution.

If you have additional questions or need further assistance, please feel free to reach out to us.

Thank you.
Cornerstone Building Brands
Customer Answer
Date: 11/25/2025

Better Business Bureau:

I have reviewed the response made by the business in reference to complaint ID REMOVED, and find that this resolution is satisfactory to me.

Sincerely,

REMOVED
Initial Complaint
Date:10/31/2025
Type:Service or Repair Issues
Status:
ResolvedMore info
Complaint statuses
Resolved:
The complainant verified the issue was resolved to their satisfaction.
Unresolved:
The business responded to the dispute but failed to make a good faith effort to resolve it.
Answered:
The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.
Unanswered:
The business failed to respond to the dispute.
Unpursuable:
BBB is unable to locate the business.
On September 2, 2025, I submitted a warranty claim to Cornerstone Brands for a cracked window. This claim was made within the warranty period, which expired on September 24, 2025. The crack clearly originated from the frame with no visible point of impact, indicating a manufacturing defect rather than damage caused by use.Despite submitting my claim on time, Cornerstone Brands did not respond until October 30, 2025, over seven weeks later. Their response stated that my claim was outside the warranty period, which is incorrect based on my original submission date. When I provided proof of the submission date, they then changed their reasoning, claiming that glass is not covered under the warranty.When my home was built, I received documentation outlining warranty coverage, which specifically included windows for one year. It appears the company is refusing to honor its warranty obligations by offering multiple, inconsistent excuses rather than resolving the issue in good faith.I am requesting that Cornerstone Brands honor the valid warranty claim and repair or replace the defective window as originally covered.
Business Response
Date: 11/12/2025
Mr.REMOVED,

Thank you for bringing this matter to our attention. To resolve the issue, and as a one-time courtesy, we are providing you with a replacement glass. You will receive the order details today, which will include all the necessary information. If you have any further questions or concerns, please do not hesitate to contact us.

Thank you.
Cornerstone Building Brands
Customer Answer
Date: 11/13/2025

Better Business Bureau:

I have reviewed the response made by the business in reference to complaint ID REMOVED, and find that this resolution is satisfactory to me.

Sincerely,

REMOVED

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