Replaced all of 7 our view windows with retrofit series windows by International window company. The installation took one day, the crew was totally professional and the process left no mess. The finished look is wonderful and I could not be happier. read more

I have four IWC windows that I had installed by a local window company in 2003. All have failed! Three you can't see out of and one leaks when it rains. I recently file for the lifetime warranty and got a reply for their local sales representative Brett Bieber. After a call and several emails, he stated they were not going to honor the "Lifetime Warranty". This coward and his "management" said IWC filed For Chapter 11 in 2011 that releases them for Any warranty issues prior to 2011. I bought their product IWC windows because of the warranty! I was never notified of the Chapter 11 bankruptcy! As a senior citizen on a fixed income now, I am stuck flipping the bill to replace this junk! I was only asking for the original cost of the windows which was approximately $1,700. This company will steel a lollipop from a baby. Buy IWC products at your own risk! Contact me for more information. read more

See all

There were IWC windows in my home when I bought it over 15 years ago. I literally never had a problem until this year - they're definitely built to last. I was unable to open one of them, so I called IWC. Phil Paulsen checked it out. Turned out it was minor - one of the screws from the rollers came off & was in the track. He fixed it in a jiffy, was super nice and was on his way. Thank you for great service! read more

A few years ago two latches on our 2006 era windows broke. After a pretty thorough search we came to the conclusion the parts were no longer available. Wrong. Recently a neighbor posted on our community forum that WBC is alive and well in Corona, Ca.. A call to the company resulted in not only two replacement latches but two spares, shipped to our door priority mail. No charge, from their warranty department. i've been around almost 80 years and have not seen such uncommon customer service in decades. International Window... thank you! read more

I have IWC 10' , 3 panels sliding glass doors I'm very happy with them as well as their customer service read more

International Window - Building Supplies Near Me - Corona, California

Iwc windows have low quality products, zero customer service, do not stand behind there products, will not honor warranty! 100% worse window company I have ever worked with! Do not order their windows! Took 6 months to get product, came in wrong color, broken glass, broken seals, wrong sizes, complete joke! I had to buy all new windows! Iwc cost me $250k! Legal action coming! The house is in Arizona! read more

Had a terrible experience with IWC. We ordered an expensive slider from them and 4 windows from a different vendor. The slider arrived and wouldn't shut or lock properly after installation. The sales guy (Aaron) came to inspect - said the installer didn't install properly and needed to level it. The very experienced installer showed Aaron that it was level, but Aaron insisted the installer cut more away. So the installer did - and guess what - it still didn't shut properly. At the same time Aaron had the nerve to comment on the other windows we had just installed from Simonton and said they were crap and we should have gone with IWC. (The Simonton windows were installed without issue btw) Then the repair guy comes 2 weeks later. Looks at the slider and said the slider was bowed and it was a known problem. Orders a new slider. New slider #1 comes about 2 weeks later. It was the wrong size. New slider #2 comes about 2 weeks later again. Installed - hooray - and then noticed a big scratch across the top of the glass! New slider #3 comes about 2 weeks later. Finally - the correct size and scratch free! I'd say from beginning to end this was 3 months? Maybe 4. And the first 4 weeks we had a door, which was the main entry into our kitchen, that didn't lock! Very unimpressed with the sales lead, the attention to detail, and the amount of time & effort we had to spend on this. When I asked for a partial refund to make up for all the time, trouble, and unsafe conditions they offered to let me return it and buy a new one elsewhere! I would never use this company again and can only cross my fingers we don't have additional problems with this door. We have 3 more large sliders and 8 more large windows to replace and I will be using a different vendor. read more

Many years ago, as a contractor I dealt with International Windows. At that time they were manufacturing aluminum double pane retrofit windows. I had many problems with the poor quality window I purchased from a supplier. The quality was so poor that I told my supplier I refused to buy any more of the International Windows. My supplier changed their supplier and the products were much better quality. During the COVID panic I was building my own home. Because of the foolishness of most governments building supplies of any kind became problematic. This of course affected my new supplier. The only windows I could get in less than two months time were from a company called Yellow Dog. The name did not sound good to me, but I had no choice. In speaking with my supplier I discovered that Yellow Dog was International. I wonder why they changed their name. No, I knew why but, I ordered my windows from Yellow Dog. They did deliver in a timely manner. However, the quality of the new, vinyl windows was not very good. Some of the windows had incorrectly-sized balances ( the windows were single hung ). I was, through my supplier, able to get correctly sized balances without additional cost. The windows work pretty well and seem fine. However, when I needed to remove screens for cleaning the windows I found they are impossible to remove. I remembered then that that had been a problem with International years before. Oh well. I do not recommend this company. I think anyone can understand this. read more

This window company is horrible, I would never recommend them to anyone, horrible product, leaks everywhere, service department is even worse, Pedro is an absolute lier, promises things and never comes through, do not buy these windows or doors. read more

I recently contact Aaron for a small issue on the lock that deteriorate over the year (18 years), and I didn't keep my hope up. Guess what after 18 long years, the IWC still standing strong and actually honors my request. Aaron did above and beyond, he even delivered the parts right to the door step. I had it installed and it works perfect. I am so glad to have IWC who stand behind their product, and Aaron's amazing professionalism. read more

I worked with Arron on an issue from before his time. He didn't need to honor what a previous company promised but he did. He even found someone to do the work who was fabulous. Arron always answered my calls and follow up every step. Again, he got nothing out of this and didn't need to do this. I highly recommend him and International Window. read more

I worked with Aaron at IWC to assist in finding a window and transom to match our existing 25-year-old windows. He informed me that he was the sales representative to commercial/retail business (not homeowners) and yet he was so gracious with his time and helpful in my hunt. After several conversations, Aaron provided me with information on windows that might work. Once we identified potential options he connected me with Paul, the owner of Roadrunner Glass to come to my home, confirm style match, and measure window dimensions. Afterwards, Aaron worked directly with Paul to finalize my order placed with Roadrunner Glass (see Yelp review on Roadrunner Glass). The biggest takeaway...Aaron went beyond his role as a sales representative and deserves honorable mention! read more

My property was built in 2003 which I had purchased last year, and have been finding ways to fix small items here and there. I noticed that few of my window screen corners were chipped/cracked and ready to break. I looked at all of my windows and noticed the IWC logo on the locks. With that, I've been struggling with finding the part number or a vendor that sells my custom windows screen frame corners. I've been desperately trying to identify and locate these parts online and in home improvement stores locally. No one seemed to carry these, until I reached out to IWC via email. Lori Bargeron responded to my inquiry and was able to ship me a bunch of these at no charge! I did not expect this type of an amazing service from a company. If anyone is searching for this exact part, please reach out to IWC for assistance. You guys rock! read more

International Window - Building Supplies Near Me - Corona, California

Wanted to update my review of International Windows, they ended up coming through for me. I got a hold of someone that really tried and did a great job. Thank you! read more

Looking to retrofit my house from single pane aluminum frame windows. I sent a email bid out to the standard big box companies. The vendor that supplies IWC windows was $500 cheaper. Unfortunately, the retro windows (5360 crown series) they build are NOT Energy Star rated. Meaning NO rebates from PG&E or MID. Who knew companies were building non-Energy Star windows. I guess it's kind of my fault for not asking. But that one question cost me over $500 in rebates. I don't even want to check what I missed on the federal tax incentives. As for the quality of the windows, all of the flange retrofits were very high-quality and worked very well. The slider, on the other hand was not finished very well. I had to cut off a lot of flashing to get the slider to seal properly. The roller on the screen doors are less than smooth. The width of the aluminum frame screen door does not fit properly in the vinyl channel that was provided for it. So you have to ride it above the channel creating instability. read more

See all

I had such a great experience working with IWC ... I was looking for a tough to find window part and they helped me figure out exactly what I needed, trawled through their supplies and then shipped it to me really quickly. super helpful and kind throughout! read more

BUYERS BEWARE!!!! prospective dealers beware! Former dealer of IWC products that wishes to warn you not to do business with this company. We placed on order for 26 aluminum windows for a light commercial project in early March. to get the order to process quicker we paid up front for the order. We didn't want to take the time to provide preliminary lien info to their accounting department and wait for them to process it, so we simply paid up front. We were given a ship date of 5/6/21. Now being a glass shop we are fully aware of the challenges of business at this time so we called numerous times in the couple weeks before the ship date to check the production floor was on schedule to ship. We as a dealer we couldn't get an answer out of either inside or outside sales reps. Just crickets. Which created problems, we have lifts scheduled to be delivered to jobsite and a client eager for us to get to work. He is literally waiting on us to install windows so he can open his gym to the public. So when ship day comes instead of shipping the windows they sent outside sales by to tell us oh well we just moved to a new warehouse so were behind it will be a couple more weeks. OK so what's our new ship date?? Crickets again. no answer he couldn't provide it. So rolling on along we postpone delivery of the lift and notify the general contractor who notifies the client we explain the window production has fallen behind schedule and we will contact them soon with a new start date. So we keep checking in with inside and outside sales both of whom will not provide a new ship date just well it will be a couple weeks. After about a week and a half they finally answer us and explain we may be behind more then we thought maybe add 2 more weeks we respond ok what's the new ship date again crickets. We explain this project is being held up by them and we have a client who literally can not open his doors for business till we install those windows . Crickets again We continue to try to get a ship date from both inside and outside sales reps and again just crickets. So more time rolls on finally we get thru to inside sales about a month after our original ship date and get told no whoops we dont know . Maybe another month , "really another month that's what you said a month ago. Why couldn't we get told that a long time ago.? " ugh err i dunno . i think its really important also to note that pulling answers out of them not pleasant seems they don't like to be bothered by people including customers. SORRY i didn't mean to bother you at work , yes its obvious you don't like that place but i need these windows. So anyways we start asking about a refund because obviously they are getting nowhere both our clients are unhappy and we still can not provide a start date after 3 months. At this point inside sales make a suggestion " you could order your windows elsewhere." Splendid idea there Lori ! We fully intend to take you up on that offer. So lets get to processing a refund because at this point i just want this nightmare to end before my client sues me. So they agree to a refund. .....ok get to it.... We proceed to process the refund to our client and bam 30 minutes later Iwc calls and says oh well we just noticed we can build your windows now how about that instead of a refund. This is important to understand they can process the order now because either they don't want to or can not cut that check. They are simply producing product for whomever is the squeakiest wheel first so our order has most likely been getting pushed back over and over to satisfy other clients orders. This is just one of many less then true things weve heard from IWC staff , I then bite my lip hard and try my best to be professional as i explain im done playing this game we have already refunded our clients who have had enough of this B.S. and we intend to take Lori up on her offer of taking our business elsewhere. That was Tuesday about noon it is now friday end of day and they have explained it will take a few weeks to cut the refund check because first the general manager has to sign it then the owner has to sign it and oh well they are on vacation right now so...... then our outside rep geos on to explain oh and im on vacation for 2 weeks starting now ...... oh how coinvent silly me once again bothering you with work. Ive been asking him (Bret) and her (Lori) to put me in contact with management with no success. asked multiple times and of course only crickets. I work in this industry and understand the challenges happening at this time but in 22 years in this industry this is by far the most unprofessional handling of a issue i have ever seen. Our other suppliers are challenged at this time also but they manage to keep their clients informed its simple professionalism and common courtesy. read more

absolutely terrible. International windows were installed in 57 brand units in 2011 in pacoima CA by the builder. I've spend 4 months trying to obtain a part to fix the slider. heck I'll even pay for it! no help from them, never call back and their employees have a bad attitude. Their sales rep finally stopped calling me back. don't waste your time with this company, go with a company like milgard who actually stands behind their products. read more

The sales rep Paul responded to an email I sent a week ago. He was in our town (Paradise Ca) that is far from his district . He gave fantastic customer service. We were happy An employee like Paul responded. I will continue to recommend IWC to my neighbors who are rebuilding from the Camp Fire from 11/08/2018... read more

I was calling far and wide for what I thought was a simple crank for a casement window on behalf of my boss's tenant. I was mission impossible as the company that installed the windows went bankrupt and I did not know the measurement of the hex screw in that window. I finally traced down International Window and received so much help from Sandy and Evelyn. Sandy even sent me the part at no cost! I am so relieved that this was resolved because I was getting ready to rip my hair out!! Thanks again International Window and their awesome team for their great customer service! read more

I usually never write reviews BUT, I felt compelled to write this one because I don't want this to happen to anyone else! I would give IWC a negative rating if I could. We had a local installer who ordered IWC windows through ABC Building Supply (a reputable local vendor), but several years after my IWC Windows were installed they fogged up in between the double panes from moisture. It was impossible to clean and it's always looks dirty, old and drove me crazy! I would cover them with curtains or window shades but it always bothered me! I had inquired several window professionals to ask if it was a bad installation or if it's a manufacturer defect of the windows and all of them confirmed it was the windows manufacturer defect. I contacted ABC Building Supplies and they advised me to write a letter to IWC and I did and never heard back from them and have lived with my ugly foggy windows for 12 + years. I am having another window company come out to give me an estimate to replace the foggy window glass next week! For those who had positive experiences and reviews with IWC, I am happy for you, maybe my 6 windows and one patio sliding door) were from a bad batch and were all defective. If anyone knows how or have had luck with contacting IWC, please advise and HELP! Thank you... read more

Excellent choices in window.Great customer service. driver hector was extremely helpful when it came to unload window even though I didn't have any workers to help him. ..thank you IWC .. Arizona read more

A big shoutout to Lori and Aaron for helping me out with replacement parts for my IWC screen doors. They went above and beyond to help me get replacement parts I needed. Throughout our house, we have 4-5 screen doors from IWC, because of normal wear and tear some of the handles need to be replaced. As I was not able to find an exact replacement part in local hardware stores, I reached out to the IWC customer service email address just to ask from where I can buy replacement parts of the same type. Lori replied to my email promptly and put me in touch with Aaron their local area representative for further assistance. Aaron contacted me to find out how many replacement parts I need so he can get them from the factory and deliver them to me, once he had acquired the parts from the factory he offered to deliver them personally to my home and at no cost. I am just amazed at the level of customer service IWC provided and special thanks to Aaron and Lori for helping me out. read more

Purely from a service perspective, I'm quite pleased that local sales rep, Aaron, came through immediately on a request I made re: an issue I had on a retrofit window. Great to experience positive assistance during these rather challenging times. Thanks again, Aaron:) read more

We had all our windows replaced with retrofit IWC windows over 16 yrs ago. We been happy with the longevity of the windows. Recently, a latch finally broke and was no longer latching. I reached out directly to IWC to try to get a replacement part or directed to a local dealer since our original installer is no longer in business. After a quick email with a part number, I was pleasantly surprised with a call from Aaron the following day who informed me that he just sent out the part and when to expect it. Now, that's quality service. If you want to know what is not great service, try to cancel an order with the Home Depot that's being sent to the wrong address. It's truly a logic defying experience. lol read more

I am updating this review for customer service. While there was the typical runaround you get when try to get warranty service they did replace the defective glass panes even though it took a couple of tries due to some dimension standards issue. Our wall is still damaged due to installation issues but IWC stood behind their product and addressed the issue that was within their control. For providing service for a discontinued product that was likely 8 years old they get 4 stars. read more

I cannot thank Lori and Alyssa enough for the fast reponse to my window issue! I reached out to Lori last week because a lock on my window broke. Lori responded immediately and informed me that Alyssa would send me a replacement lock. One week later I received the lock that I needed. Thank you to Lori and Alyssa for the quick response and great service! read more

We had a local company install IWC windows about 15 years ago. They are supposed to carry a lifetime warranty but only if the installing company is still in business. Seems like a convenient way for them to void the warranty and not stand behind the quality of their windows. By the way 3 of the windows are failing are failing. So unless you can see far into the future to make sure the installation company will be in business for a lifetime, do your homework and pick a company that will stand by its product. In other words NOT this one. read more

5 stars!! My window was off its tracks and was not secure and Oscar Monterro was able to schedule a repair the very next day. Then, 2 months later, another window came off its tracks and was not secure, and again Oscar scheduled a repair for the very next day. His workers are extremely knowledgeable, kind, and very helpful, and taught me how to properly close the window in the future so it doesn't come off its tracks. I am so grateful for IWC and especially Oscar and his team! Thank you!! read more

Poor quality sliding door that is in its second gasket leak and has cloudy glass in the interior. Handle on the door broke. I weigh a little over 100 pounds, so not sure how a woman my size could break a metal handle. Probably because it is made of very thin aluminum. I called the company and they asked me to send a photo. I did, twice and still no reply two weeks later. Spend the extra money for a better quality door and customer service with another company. read more

WE had our doors and windows replaced by IWC about 12 years ago in our home in Glendora, Ca. During this time, the company changed hands and the new owner, under their agreement, was not obligated for any liabilities. But we approached the new owner in Fullerton, Ca and explained that our locks in the sliding doors and screen doors ( three of each) had broken , often,-- particularly the screen doors, but it should not have happened since the previous owner of the company had given us life time warranty. The company was extremely helpful. Montero - an employee of the company, was very patient and understanding of the problem. He offered to send us, free of charge, three pieces of each ( i.e.3 locks for the glass sliding door and 3 locks for the screen door). He immediately shipped , via FEDEX, three pieces of each. It just took a phone call and the shipment was on on its way the same day. They did not require proof of purchase, which was about 12 years ago. Montero sent an e-mail confirming the shipment within an hour. I am pleased with the service , the new IWC owner provided, although I still am confused why the original locks were continually breaking. I hope there new design is better than the old design. For their service, I give them high marks-- a rating of 5 out of 5. Arora in Glendora, Ca read more

I reached out to the International Window Company for help in Purchasing 2 replacement top and bottom window locks that I purchased with my home in 2004. They have a very quick response and are sending the locks at no charge. Lori Bargeron, Sales Manager, International Window is a class act and it is a pleasure to deal with International Window Company. I recommend installing their products in your home. If I decide to build a home again, I will use their products. Sincerely, Joseph C. Pellegrini read more

Thank you so much for your help in my time of need. Oscar Montero shipped me a new locking mechanism with a new handle at no cost after I called my installer to no avail. My sliding glass door was was approximately 17 years old and the latch/lock was still available. So appreciative for your costumer service. read more

STAY FAR FAR AWAY FROM THIS COMPANY !!! I replaced the entire 41 windows and 3 french doors with IWC in 2006. Soon after, nearly half of the windows have functionality issues. 2 of the 3 french doors lock and dead bolt were broken. Over half leaked water into the house during heavy rains. Mind you, these windows and doors get very little use. Even before they went bankrupt in 2011 they refused to own up to their lifetime warranty. They gave faulty promises and ignore my phone calls. Their product quality is beyond poor. The craftsmanship is horendous. DONOT WASTE YOUR HARD EARNED CASH ON THEIR CHEAP PRODUCTS. There should be an option for 0 stars. read more

Never buy windows from IWC! A week after my windows were installed the company who installed them shut the doors and went out of business. No one returned calls to fix the issues. I have so much water damage I will never use these windows again. I was told whomever purchased the company did not purchase warranties so anything prior to 2011 is no longer valid. Funny, because I was never told this or contacted. Yet the same company that I show a certificate for is still running a business handing out false warranties! I found it interesting on my warranty certificate it states windows only sold after 2002. So obviously this is a scam every few years to not pay warranty items. Probably why they have to go bankrupt because their product sucks! read more

I ordered 9 windows and 2 French doors from International Window Corporation around 2004 and approx. 2 years ago one French door panel started to fog which over the months just got worse and 2 days ago I noticed my kitchen window also getting cloudy. These windows were bought with a " guaranteed lifetime replacement." What a joke. Several years later the company was bought out and the warranty was not extended. Now I am stuck with having to find a contractor to come out measure, order the glass and even the handle, and then install the glass. One glass company wants $1,990, which involves, measuring, ordering from IWC, and installation with these 2 windows. Every friend I have who has double-pane windows have had seal problems but their companies have honored their warranties. These windows are beautiful and I am just praying that the remaining French door and windows hold up because replacement is so costly -- if you can even find someone who will do the job. I would never buy double pane windows again -- I doubt they keep the house warmer and they don't hold up. I still have single pane windows that look great and I am so glad I didn't replace that glass. IDK, Looks like from a previous review even if you send the money who knows when the glass arrives - talk about feeling stuck. read more

See all

One of 12 came defective (interior fogged), after 5 months they came out with the wrong sized replmt and now, after 8 months, still nothing.

Buyer beware, company doesn't want to honor their lifetime warranty. I was told they weren't honoring any warranty before 2011 because of CEO owner changes. I thought all Corporations that change hands still keep all the business liabilities, good, bad or otherwise. I was told they couldn't help me. read more

I have a large living room window from 2001 when the house was built. The window has started to drip and it's not even raining! The new company is not honoring any lifetime warranties prior to 2011! I found out today the old company went bankrupt. Now I'm stuck with this window and no lifetime warranty. read more

STAY AWAY FROM THIS COMPANY!!!! A couple of months ago I order 42 Windows for a job in Pasadena. This company started giving us so much trouble from the begining. The Lady in the front, Jenny, is extremely rude and did not want to help us when we wanted make a complaint about the order being wrong. A lot of the Windows were badly manufactured and the sizes were also wrong. Even when we went in to make a payment Jenny was still very rude. If I could give this company negative stars it would defiantly be -5. Please don't waste your money and time with this company. Do your research, learn from our mistake. read more