Inline & Fibertech are Canadian Mfrs and good quailty products.

Fibercraft I cannot seem to be able to locate as a window mfr.

Window City, the window retailer or the manufacturer? Location?

JR Windows, the window retailer or the manufacturer? Location?

Andersen is not a true fiberglass it is Fibrex (wood pulp and resin)

Integrity from Marvin is also a product you may want to look at.

You don't mention where you are located buit the Canadian Fiberglass windows get pretty pricey.

I recently installed Anderson 100 Series (Fibrex) and they seem durable. They come in black which is the main reason we purchased them. Only time will tell if they hold up.

I too, just installed the Anderson 100 series. I like them much, much, better than the vinyl windows I had in my old house. I purchased them because they came in a cocoa brown exterior and white interior. I feel they will hold up over time.

We have Milgard fiberglass because they came in black inside and out. Have no complaints at the 3 year mark

Hi Jsinclair-

Milgard offers two fiberglass products, one with a solid wooden interior and fiberglass exterior, the Essence® Series, and the other is our Ultra™ Series full fiberglass windows that come in seven different color choices and is durable and energy efficient.

See all the details here: https://www.milgard.com/materials/fiberglass

Andersen 100 ( fibrex) is i think is 75% vinyl and 25% saw dust ? Also, high end vinyl offerings beat the andersen 100 in every conceivable category including energy efficiency. Look at the nfrc sticker on an andersen and compare it to high end vinyl such as okna, soft lite, sunrise, or kensington and you will see a rather large difference. I will give you a hint, andersen loses by a mile.

Andersen does fairly well if not better than other products it typically competes with.

Some people feel vinyl just looks cheap no matter the brand ,quality, or performance numbers. A mile is a matter of perception, obviously you sell vinyl and not Andersen.

...and if you took the difference in price between the Andersen and an overpriced Okna and invested that money, you'd almost have free heat for the life of the windows. Energy efficiency is over rated and expensive in the window world....

I think that pricing will vary a lot from dealer to dealer and like cation to location. From what I have seen the pricing is pretty competitive.The gap typically widens when you need to paint the exterior on vinyl.

Pricing definitely varies dealer to dealer, that is the largest single factor. There is some real irony in ksc calling out a vinyl window as "overpriced" given that Andersen Renewal is typically the most expensive option in any given market, but I digress. I will add however that in most cases, performance and quality go hand in hand. A difference of a couple points on u value or dp may not save you thousands in energy, however it may be indicative of a window that will last twice as long due to superior engineering and build quality.

To the Op question, MWM is pretty much spot on. The Canadian FG products are tops in terms of performance. The Marvin options, while not killer performers, are pretty well built and I'd consider them to be a rare exception to the performance/quality rule.... The next question of course is what leads you to fiberglass specifically? Oftentimes a good vinyl or wood window can get the desired results and possibly even do so better, although there are some circumstances where FG makes the most sense.

The Performance quality rule does not pertain to Marvin but would pertain to Andersen? Are you referring to u values , dp ratings , or air infiltration numbers or all?

i would also look at InLine fiberglass.

You have some great fiberglass window choices up there in inline and fibertech. I’d pick one of those

@Kim Q @ledmond10

Could you post some pictures of your milgard ultra windows from the interior? We are considering putting them in for our new build in Northern CA.

Provia Heritage fiberglass doors.

Enerlux fiberglass windows (but be sure to ask about installation before considering).

I’ve worked with InLine, Marvin Integrity, Pella Impervia, and Andersen Fibrex. I’d discourage you from pursuing InLine or Pella. The Pella product is durable, but it’s ugly. The InLine product is really nice, but the company is really difficult to work with, and the lead times can get crazy when dealing with customs. This can get frustrating when waiting for the windows, but it’s downright maddening when waiting for service parts. I’d rank Marvin Integrity Wood/Ultrex at the top of my list, with Andersen fibrex products (400 Woodwright, A-Series, 100) following behind. As has been mentioned, Andersen fibrex is not technically a true fiberglass, but it is similar.

Fibrex is not ”true fiberglass but is similar”? Really? In what way? Other than the fact that it’s not wood or vinyl (yet IS a combination of wood and vinyl), there are really no similarities.

Inline is the best performing product mentioned but the shipping difficulties ring true.

Similar in that it doesn't look like vinyl, simialr pricing,performance, options , pricing and warranty when compared to the other big 2. Kind of like James Hardie and LP siding are very different in make up but compete in the same category.

Simply great said “technically they aren’t fiberglass”, not that they are another material with simialr features tht competes directly with Fiberglass. By that logic there are vinyl and even wood windows that are similar and “technically not fiberglass“ as well. I guess all window materials are similar then, although in that case no “technical” clarification would have been needed here Between these two.

Fibrex is technically not fecal matter, but both are made by Andersen employees, both have a component of being swept up off the floor, both are earthtone hues in their natural state, both have a pungent odor when produced, and i desire to have them make up the material of windows that I install equally. This is a facetious comparison of course (or is it fecetious?)

fiberglass is fiber reinforced plastic, so it does share components with fibrex and vinyl wndows.The logic makes sense to me, and your fibrex references are childish and lame.

Thanks for clarifying toddinmn. I’ll expect your discussions of fiberglass windows in the future to reference the fact that they are “technically not true vinyl” which indirectly insinuates that they are pretty much the same, just as simplyterriblecomparisons did with fiberglass and fibrex.

Yes my reference was silly and perhaps childish. It was meant to be as ridiculous as the statements of yours and the other poster, as well as illustrate that one could take two completely dissimilar things and make a lame list of things that they have in common just like you did. You’re welcome.

Mostly aesthetic. I have only seen Uvalues for Marvin products, the actual air infiltration numbers are very hardy to find.

Milgard offers Ultra® Series fiberglass windows in "Black Bean" for both the interior and exterior window frames. Every Milgard fiberglass frame is tested for color uniformity, gloss, film thickness and chemical resistance for quality and long-lasting performance. For more information visit here: https://www.milgard.com/content/exterior-fiberglass-finishes

I am receiving quotes for new construction home in California, I recently got a quote for Marvin fiberglass black interior and exterior for 44 windows and 2 large sliders, one 12 ft and the other 16ft. The quote was for 97,000.00 and this is not installed. What should I be seeing as a reasonable quote? I would like to use Marvin or Milgard fiberglass windows but I am open to suggestions.

Without knowing more about your quote, sizes, types, bells and whistles, etc, etc, etc, it is impossible to tell but I do not think I would move from those two if you want fiberglass.