Infinity Replacement Windows was created when Marvin recognized an opportunity to offer quality Ultrex® fiberglass replacement windows and doors professionally installed for discerning homeowners.

Infinity replacement windows and doors are made from Ultrex fiberglass – a pultruded fiberglass material so strong and durable it is superior to other window materials. Best of all, it makes Infinity products virtually maintenance free. Our Ultrex finish is as strong as steel, up to 3x thicker than competitive finishes, and is AAMA certified meaning our commercial grade finish resists the harshest weather conditions.

Created for Strength & Beauty

Our patented process starts with strong cables of glass that are saturated with specially compounded resins that are pulled through a heated die and cut with diamond-edge blades. Below are the steps Ultrex goes through from forming and curing all the way to the cutting stage. All of these steps create a remarkably durable material that outlasts and outperforms other window materials.

Advantages of Ultrex fiberglass:
Low maintenance
Base material is silica sand — an abundant natural resource.
Intricate profiles replicate the look of traditional wood windows.
Low expansion provides easy operation for the life of the window.
Strength keeps windows square and true.
Narrow profiles allow for more visible glass area and expanded views.
Long-term stability reduces the risk of seal failures and air leakage through the window.
Patented, mechanically bonded inline acrylic finish is up to 3x thicker than competitive finishes, providing superior resistance to discoloring, scratching, and denting.

Ultrex fiberglass is 8x stronger than vinyl and one square inch can support 41,000 pounds!
Fiberglass windows have a 38% longer useful life expectancy than vinyl.
Infinity windows with Low E glazing can reduce your heating and cooling bills by up to 30%.

Ultrex is as strong as low carbon steel and 8x stronger than vinyl. It’s so tough we have to use diamond-edge blades just to cut it to size. The strength of Ultrex translates into superior stability, long-term ease of operation, low-maintenance, and superior performance.

Ultrex resists the ravages of cold, heat, time and pressure to provide the most worry-free windows and doors available today. While vinyl can distort in extreme heat or streak and crack in the fluctuating temperatures, Infinity products offer the highest level of performance and are virtually maintenance-free. Low thermal expansion means a stronger seal.
Ultrex has an extremely low thermal expansion rate, which keeps the window stable and weather tight, reducing the risk of seal failures and air leakage into your home.

Tired of high-maintenance windows?
The low expansion of Ultrex means Infinity’s patented finish stays looking like new and is virtually maintenance free. It resists discoloring, warping, rotting, corrosion, denting, rust and doesn’t require sanding, scraping, or painting. A superior finish that outlasts the competition.

Our patented, mechanically bonded finish is up to 3x thicker than competitive finishes. It provides superior resistance to scratching and UV degradation – even on darker colors.
The Ultrex coating system is AAMA 624-10 verified meaning our commercial grade finish resists the harshest weather conditions mother nature offers – a claim our competitors can’t match.
Infinity offers Stone White as our standard exterior color. Sierra, Cashmere, Pebble Gray, Bahama Brown, Bronze, and Ebony are available as options.
Infinity offers Stone White as our standard interior color. Sierra and EverWood®, our stainable wood grain interior finish, are available as options.
Infinity uses a patented, mechanically-bonded finish, compared to competitor’s thin painted finish that can expose the rough fiberglass material.

Infinity products incorporate the details of traditional wood windows without the maintenance. The advanced design of Infinity products combine easy cleaning features and effortless operation.

EverWood is an Infinity – exclusive wood grain interior option that can be stained to match your existing woodwork. It looks and feels like real wood, but doesn’t require the sanding, scraping, or refinishing of real wood.

Lastly – Efficient and Beautiful

The combination of Ultrex fiberglass and high performing glass options on Infinity products exceed ENERGY STAR® qualifications. The result is a beautiful and energy efficient window or door that keeps your home comfortable in all temperatures.

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