Infinity Fiberglass Windows | Built For Life

Sealed Insulated Glass windows

Why Fiberglass Windows?

Fiberglass is superior to other window frame materials in just about every metric that matters: strength, durability, and efficiency. Infinity’s proprietary fiberglass, called Ultrex, is made by a process called “pultrusion,” where raw fiberglass strands are saturated in resins and pulled through dies, which determine their shape. Once cured, the pultrusions receive a finish and are then cut to length for the construction of window frames.

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Infinity Fiberglass Windows Are Stronger

Ultrex window frames are really strong, in fact. Eight times stronger than vinyl. Now, you may be wondering why strength matters when it comes to windows, and there are benefits to consider. The first is window size. Glass is heavy, and the superior strength of fiberglass allows for much larger openings without the need for additional structural members interfering with the view.

Have you ever seen a window that’s fogged or cloudy between the panes of glass? That’s called a seal failure, and it happens when the seal between the glass and spacer of a glass unit becomes compromised, and moisture, dust, etc, get trapped in the glass unit. One of the factors that contribute to seal failures is excess flexing of the insulated glass unit caused by a weaker frame material. Not only will Ultrex fiberglass windows get you the big, beautiful openings you want, but they’ll extend the life of your glass units.

Infinity fiberglass isn’t going to warp or twist…ever. Unlike other window materials like vinyl and wood. Even when going through the expansion and contraction of temperature extremes, fiberglass will stay true to form.

fiberglass windows

Infinity Fiberglass Windows Are Durable

To say that fiberglass windows are durable is a bit of an understatement; they’re going to last the rest of your life. Fiberglass isn’t going to rot or swell like wood. It won’t oxidize or rust like aluminum or steel. It won’t break down, chalk, or splinter like vinyl can. If you threw a fiberglass window frame into a pond and a year later you fished it out and washed it off, it would be just as good as the day you threw it in. When you choose Infinity from Marvin, you’re choosing a virtually maintenance-free window.

Infinity Fiberglass Windows Are The Future

infinity fiberglass windows

Technology is always changing and advancing, and people will continue to find ways to make products better, faster, more efficient, and cost-effective. From cars to can openers, things get better with time. Windows are no different. Once we arrived at glass housed in frames the big changes have been what that frame is made of. Windows progressed from wood to aluminum and steel, then clad wood and vinyl. Fiberglass windows are relatively young, appearing on the scene in the 1980s.

Infinity Windows launched their line of fiberglass windows in 2002 after years of research and development of the Ultrex fiberglass pultrusion, but they weren’t a newcomer to the industry. Infinity is a division of the Marvin window company, a family-owned window maker since 1912. It is still run today by the fourth generation of Marvin’s and above all, they pride themselves on their commitment to their local community.

When you choose Infinity fiberglass windows from Marvin, you get the backing of a family-owned company with over 100 years of experience and success in the industry. You can rest assured that they’ll be around to stand behind their products for generations to come.

Infinity Fiberglass Window Features & Options

Window Configurations

Infinity windows come in a full range of window configurations, so you don’t have to compromise on your design preference.

  • Double Hung
  • Single Hung
  • Single Hung Round Top
  • Slider
  • Casement
  • Awning
  • Bay & Bow
  • Picture (Round Top & Special Shapes)

Colors & Finishes

Infinity has developed a proprietary acrylic finish that is three times thicker than typical. It’s engineered to resist fading, scratches, chipping, denting, peeling, and chalking, so you never have to worry about refinishing your windows again.




Everwood looks and feels like wood and can be painted or stained to match your existing interior wood finishes. It’s inorganic, so it will never rot or absorb moisture over time.

Grilles & Grids

Infinity from Marvin is available with both grilles between the glass (GBG) and simulated divided lite (SDL) options. GBGs are between the two panes of glass and are seen but not touched. It’s a way to cut costs and make the windows easier to clean. SDLs are more than GBGs, but many prefer the authentic look of SDL grids. Of course, no grids are an option as well!

Installation Matters!

Choosing a window is only half the battle for a replacement window project. A great window that is improperly installed is a bad window. If you’re going to go through with a project like this you need to find a great window company that you can trust to get the job done right.

If you live in the Greater Houston Area, look no further than Houston Window Experts. Houston Window Experts has a reputation for putting the homeowner first and seeing the project through to the end. Our reviews say it all.

If you live anywhere else in the U.S., visit The Window Experts where you can find a list of like-minded window & door companies and locate a dealer that can help you.

Infinity Offer Details

  • Purchase must be made in June
  • Existing window replacement only
  • May not be combined with other offers
  • Discount is calculated on the total project cost

We are the Houston Window Experts! Contact us today for a Free Consultation on how we can help with your window needs. You may also call us directly by dialing 832-900-7024.

Our Services include: Replacement Windows Houston, TX metro area. Houston Window Experts is a privately owned and operated company in Houston TX. For more information about us, please write to info [at] or call our Houston office at (832)900-7024. All material is copyright of Houston Window Experts. Houston, TX.