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Complaints about fiberglass windows — plus what is the next best thing?

x2MMk3Yz4x | Posted in Green Products and Materials on

We are building a house in Quebec province, Canada — so very cold winters and hot / sometimes humid summers. We were set on installing fiberglass windows triple / double panes according to exposure of lot (mainly southern and eastern with a little western and very little northern.)

However, we attended a home building fair recently and two of the window / door suppliers we came across said they had stopped supplying fiberglass windows / doors as there were too many technical problems and complaints from customers as well as major issues of supply / service from the companies involved. The issues cited were: cracking frames, peeling paint, leaking, warping, pooling etc. We were also told that with a new build, the fact that the house will take a few years to ‘settle’ means that using a more rigid frame like fiberglass is riskier….

Obviously, we realize that as suppliers of alternative products, they may not always be the most objective and at the end of the day, we need to weigh up all the good press fiberglass gets with these negative comments. We would welcome your thoughts on the above.

Also, if we did decide not to go with fiberglass, what would be considered the next best alternative for low U and high SHGC & VT windows?

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Replies

  1. user-212218 | | #1

    Ahh.. Poor Thermotech... They certainly get some bad press from dealers in the national capital region.

    When the only people saying how bad fibreglass windows are, are the reps who carry something else, well, 2+2 = 7.

  2. GBA Editor
    Martin Holladay | | #2

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    Tango,
    One of the statements in your list of problems rings true -- "complaints from customers as well as major issues of supply / service" -- but only for one company, as far as I know: Thermotech Fiberglass Fenestration.

    The other Canadian manufacturers of fiberglass windows -- Accurate Dorwin, Inline, Duxton, and Fibertec -- have pretty good reputations for service.

    The other listed problems -- "cracking frames, peeling paint, leaking, warping" -- are mostly nonsense. Concerning "pooling," any window, including a fiberglass window, can have installation problems leading to water leakage. Install your windows carefully.

    I'll leave it to others to recommend windows that don't have fiberglass frames. However, I will say this: fiberglass frames will always outperform and outlast vinyl.

  3. x2MMk3Yz4x | | #3

    Thanks for these answers - very helpful. We have heard positive stories also about Inline and Fibertec. If we had to pick one more, would you go for Duxton or Accurate Dorwin? Thanks a lot

  4. user-1012653 | | #4

    While I can not vouch for the quality, I have been in contact with all the companies above except Duxton. All of their service has been top notch and fast responses. Accurate Dorwin has probably had the best service and responses of them all in my experience thus far. They also were the highest priced below Thermotech. Inline and Fibertec were close with Inline the cheapest. AD was pretty comparable to Fibertec. Thermotech was a good 5-8k higher then the rest.

  5. nCwa4EL33B | | #5

    So I would agree that the problems spoken of are isolated to ThermoTech Windows.
    Fiberglass windows are among the most resilient in the market, but like any product, small manufacturers sometimes cut corners, and problems result.

    SeriousWindows in an excellent option for very high performance windows. After building high performance green housing in Ontario and Quebec for the past 10 years- I'm now involved with the company distributing for SeriousWindows in this region, and we offer excellent pricing on very high performance fiberglass frame windows. We have now placed these windows in everything from LEED platinum targeted homes in the Eastern Townships, to federal government buildings.
    To ease your concerns- They have a lifetime guarantee and a well capitalized company to back that guarantee.

    If you are really scared off from fiberglass we can also offer a very high performance vinyl window as well- but Fiberglass is really my preferred choice.

    You can reach us at 866-970-9888 to get sample pricing.

    Cheers,
    Christopher Sweetnam Holmes

    Formida Windows and Doors (Distributor for Serious Windows )

  6. user-1037041 | | #6

    Hi Christopher,

    I've been following this thread:

    https://www.greenbuildingadvisor.com/community/forum/energy-efficiency-and-durability/14850/serious-windows-vs-thermotech-fibertec-inline

    for quite some time. Have any of your customers experienced problems like those described in the thread? Serious Windows (and associated distributors) take quite a beating from some of the posters! Although THIS thread is more about the quality of the fiberglass, service counts in large amounts as well!

  7. user941025 | | #7

    I recently got a triple-glazed Fibertec. I thought the price ended up being quite good, and if it performs as the sticker claims it should, I'll be happy with it. It came in the 8-10 weeks that I'd expected. And, although they did mess up my order, I got the impression they would have swapped it out for me without much hassle; however, the one they sent was workable for me.

    In short, at this point, I'd order from them again.

  8. nCwa4EL33B | | #8

    Response to Jeff Nelson.

    We've been extremely pleased with the quality of SeriousWindows products.
    The complaints I've seen on the other thread seem to be related to a bad dealer, this is truly unfortunate butthis is not the normal experience with Serious Windows Fiberglass dealers, who are generally passionate green builders and designers themselves.

    I agree completely that service is an essential component of any window sale, and generally I would suggest that no matter who you buy windows from -
    Ensure that it is a company that ;
    1-has knowledgeable, competent staff, that take the time to service you well and the time to understand your needs, and explain how to get the best value from the products.

    2-Has a local salesperson who can be on site at your project, should you need help for any reason, installation, warranty etc.

    3-a manufacturer that you trust will handle any warranty and customer service issues with professionalism, and has the financial capacity to back the warranty.

    We strive to ensure that we offer such service to our clients in Canada, and we sell excellent SeriousWindow and SeriousGlass products, which have a 30 year history in high quality buildings from small passive houses to the Empire State Building.

    What we most like about working with serious, and why we chose to distribute SeriousWindows over all other fiberglass window brands, is that
    1.They are putting significant money, research, and resources to build a truly NorthAmerica wide high performance window brand.
    2.Serious is a glass manufacturer first and and window manufacturer second- and glass performance is the most important part of any window.
    3.Serious has a great team of passionate employees who want to delivery great product.

    Cheers,
    Christopher

    Cheers,
    Christopher Sweetnam Holmes
    Formida Windows and Doors (Distributor for Serious Windows in Eastern Canada ) 1- 866-970-9888

  9. user-1037041 | | #9

    Thanks for replying, Christopher.

  10. user-1021589 | | #10

    I am building a house outside of Ottawa presently and have recently purchased fiberglass windows. I have been to the Thermotech plant (it is a 15 minute drive from my home) . I received very good service from them during the "shopping phase" and cannot complain. The sales rep or the company owner and chief engineer answered all of my questions.

    No doubt though, their reputation suffers from a very poor BBB rating, which may or may not be connected to their split in 2005 from 'the other' Thermotech window company in Ottawa that is a retailer and supplier and not a manufactuer. I do not know the whole story. My decision was based on price more than anything, as we were desparately trying to squeeze the project into our budge and every penny matters. But I admit the reputation issue also factored into the decision to buy from Fibertec. I didn't want to take the chance on such a large investment. I don't have the windows yet, by fibertec has been terrific.

    I hope thermotech gets this issue straightened out because I would hate to see this company, by all rights a true innovator in this area, disappear from the scene. With respect to some of the other triple glazed options, we looked at triple vinyl - it was not much cheaper and and was - well, vinyl! The wood options from Europe seem very good buy much more costly. They were out of our budget.

    John Scime
    http://yearofthehouse.wordpress.com/

  11. Brok | | #11

    Hi Tango, who were the companies involved with the fiberglass supply / service issues in your 1/22/12 post?

  12. JimNorton74 | | #12

    I've also recently had windows installed from Fibertec and agree the service was great and the windows are top quality. I'm glad chose them over the other manufacturers you mentioned.

  13. sarayale | | #13

    I purchased double hung fiberglass windows from Fibertec and I can tell you it has been a nightmare--so anyone considering these windows--definitely do not buy. Here are the most blatant problems so far---no nailing fin on the top which the installers all think is a bad design. The joints between the vertical and horizontal parts of the windows are not sealed and I am getting water in many, many windows when it rains. The last main issue is there are no weep holes in the sash frame so they are holding water. Fibertec is telling me their windows do not come with weep holes. US window expert helping me is telling me that is terrible design. He told me their rating for water/wind resistance is below the US standard also. 2 seals have broken also. This is probably the biggest mistake I made buying windows from them. I am talking to Fibertec now. They will not come out and help me even though I offered to pay plane fare and expenses. I am nin NJ only an hour away by plane. They are instructing my window expert to drill weep holes of 1/16" and he is afraid it will break the seal or crack the glass because there is so little room for error. I am not making this up. I am building an over 13,000 square foot icf house and cant finish because of the windows. Feel free to call me with questions or documentation. If I can prevent anyone from going through this nightmare, I will be happy. Buy a high end vinyl and be done with it and stick with a US manufacturer. I am considering ripping out about 70 windows and am getting sick at the thought of that. I wish I had never heard of fiberglass windows.

  14. sarayale | | #14

    PS- If anyone out there has any advice to help me--please contact me. We are going to seal the outside joints to prevent water getting in the house--that worked for one window we tested so far. I am not sure what to do yet about the weep holes and how to drill them without damaging the seal etc. Any advice/help is appreciated. Oh I forget to mention the minor issues---windows not staying open and sliding down and windows very hard to open and close. We are in NJ.

    1. jkovacs9 | | #15

      Sara,

      Your post brings to light the most simple and ultimately the biggest problem with Fiberglass Windows. The corners are mechanically joined with screws and epoxy because the material can not be welded. The window not having a weephole is beyond ridiculous and completely unacceptable if it doesn’t have a sloped still to force the runoff. These Fiberglass Windows trap water in the frame and even if there is a weephole it often clogs and backs up water into the frame which then corrodes the screws and works it’s way through the corner down into the wall. People are always happy with Fiberglass in the short term because they are energy efficient and look better than vinyl. However, the water infiltration issue often takes years to recognize and the damage is not something that gets identified until the problem is really bad.

      I work for Andersen Windows in the US. I can’t count how many times we’ve removed a Fiberglass Window and found 6-8 feet of mood festering in the wall below it. And that is with a window that shows no visible signs of failure.

      120 years of research, design and engineering and the ability to do whatever we want and Andersen never has and never will sell a Fiberglass Window because the corner construction problem is one that nobody can solve while still making the product at an affordable price.

    2. UnhappyCamper | | #16

      Sara,
      We installed a house full of their windows, and are with you 100% in agreement that putting in Fibertec windows is the WORST decision we have ever made with our home. The headaches never end, and the company does NOT stand behind their warranty, or their product. We have had almost every single window seal fail. You can't even see out the windows because when the seal fails, moisture enters between the panes. It will dry and leave a film. It does that every day and before long the film makes it impossible to see through the glass at all. Our sliding glass door now has seal failures, both glass panels. Fibertec wants $3,000 for "handling and palletizing" the 2 panes of glass. That is not a typo. They want us to pay them $3,000 for the labor to handle and palletize TWO glass panels for a sliding glass door. Then, there is another $800+ on top of that for "shipping and customs". I had the displeasure of having to deal with Fibertec a couple of years ago, and should have done something at that time. I was given a list of others who had also been sold the same inferior/failed product and couldn't get the company to stand behind their warranty or product. How do I get my contact information to you? Sometimes, people just need to take a stand together and fight for what is right. The company we purchased the Fibertec windows through won't even deal with Fibertec at all anymore because of these very issues. I also have documentation of the nightmares Fibertec has caused us. We are also in the US - which makes it even more difficult to get authorities involved and things made right by the company. I will NEVER buy any product made outside the US again for this reason, if it is junk, I want to be able to go the the Attorney General in my State and have them force the company to stand behind their product and warranty.

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