Fiberglass windows are perfect for homeowners who want beautiful, low-maintenance windows that will last.
Fiberglass windows are not the cheapest replacement option, but they will undoubtedly last you the longest. All windows are aesthetically beautiful by today’s standards, but if durability and longevity are important to you; if you plan on being in your home for over 8 years and want a window that will last, then fiberglass windows – specifically Integrity Windows from Marvin are without question your best option.
What Replacement Window Options are Out There?
Fiberglass Windows. Integrity. Integrity windows and doors are made with Ultrex®, a pultruded fiberglass patented over 20 years ago (by Marvin) that outperforms and outlasts vinyl, roll-form aluminum and other fiberglass composites. Integrity Windows has been voted Best Fiberglass Windows by BUILDER Magazine for 5 years in a row.
Fibrex Windows. Andersen. Andersen’s Fibrex® is made of a vinyl/wood composite – despite the name, there is no fiberglass in Fibrex. Stronger than vinyl, the issue with these windows lies in the fact that there are multiple materials used in the exterior. Multiple materials that expand and weather at different rates, which results in a loss of seal (drafts & leaks).
Vinyl Windows. This extruded plastic makes the least expensive and most commonly installed windows, but it turns brittle with age and exposure to cold. The frames and sashes have thin, flexible walls, can’t be repaired, and don’t take paint well. Joints are heat-welded together, leaving obvious bumps at corners.
Clad Wood Windows. These high-end wood windows have an exterior layer of vinyl or metal – usually aluminum – that reduces maintenance and improves longevity. They are a close match to fiberglass in performance, but have a much higher price point.
Aluminum. This lightweight, extruded metal is about as rigid and low-maintenance as fiberglass. But it’s a terrible insulator, readily carrying heat to the outside in winter and to the inside in summer. That’s why this type of window is suited only for mild climates.
DIY or Hire a Pro?
Integrity Windows and Doors from Marvin, the most awarded line of Fiberglass windows in the market are only sold through approved installers. Others will sell directly to homeowners or through big-box stores like Home Depot, but hiring a pro is recommended to ensure long-term, leak-free performance. Installation is as important as the type of windows you choose.
Why Choose Fiberglass Windows?
Not Bothered by Water. Because fiberglass is inert to moisture, there’s no concern about rot, corrosion, mold or shrinking and swelling.
Temperature Stable. Neither heat nor cold will induce fiberglass to flex, sag, or change dimension. That reduces chances of leaks around window perimeters.
More glass, less frame. The stiffness and strength of fiber-reinforced resins means that window frames and sashes can be narrower and less bulky without compromising their ability to resist high winds.
Built to Last. Warranties against construction defects range from 10 years to “lifetime” or for as long as you own your house. Insulating glass typically carries a 20-year warranty against seal failure.
Low Maintenance. Fiberglass windows are virtually maintenance-free aside from cleaning the glass and replacing the weather-stripping every decade or so.