The Materials Difference


The Marvin Family of Brands approaches materials differently. Marvin, Integrity, and Infinity distinguish themselves with the highest standards for material selection, sourcing, and development. Marvin’s window and door materials — wood, extruded aluminum, Ultrex® fiberglass, and Everwood® — offer unique benefits for homeowners, builders, and architects.


Offering aesthetic appeal, many customization options, and design versatility, wood is a premium choice. Wood can be used on both the interior and exterior of a window or door. As a lower maintenance option, wood can also be used on only the interior with an extruded aluminum cladding exterior. Marvin offers both options, leading the industry in sourcing, processing, and utilizing high quality wood.

Benefits of Wood

  • Maintains its properties throughout drastic temperature changes
  • Provides exceptional insulation
  • Creates a warm, natural feeling in contemporary spaces and historic buildings alike
  • Handles various treatments and finishes well
  • Endless customization options

The Marvin Materials Difference : Wood

Marvin’s dedication to quality wood products begins with sourcing. The Marvin team builds relationships with wood suppliers, many of whom have been providing Marvin’s wood for over 20 years.

Additionally, Marvin employs materials experts to uphold their commitment to wood expertise, including degreed wood professionals. These experts undergo annual training and wood specification-based education to stay abreast of the latest wood knowledge.

This level of expertise for assessing wood and understanding its application—how it works in a window—contributes to exceptionally durable wood windows and doors.


Extruded aluminum is used on window exteriors to provide additional protection and to minimize maintenance. With industry-leading standards for protection and durability, Marvin’s extruded aluminum elevates exterior aluminum cladding to a superior level of performance. Over time, extruded aluminum maintains its shape and protects from the elements years after installation.

Benefits of Extruded Aluminum

  • Long-lasting color and performance
  • Can create custom profiles, providing flexibility in matching details without compromising on performance
  • Offers a low-maintenance alternative to wood

The Marvin Materials Difference: Extruded Aluminum

Marvin’s extruded aluminum meets the highest American Architectural Manufacturers Association (AAMA) 2605 standard, which requires 10 years of color retention and chalk resistance. Marvin also offers a 20-year warranty on clad finish against loss of adhesion, chalking, or fading.*

Marvin's aluminum cladding goes through a five-step pre-treatment process, which promotes excellent adhesion. Thanks to precision cutting and fabrication processes, extruded aluminum can also fit a range of profile widths, including those for applications that call for extremely wide casing profiles or historic profiles.

A focus on film thickness, pre-treat weights, and color uniformity gives long-lasting color. Marvin’s durable paint finish is available in 19 rich and durable standard colors, as well as nearly unlimited custom options, and its 70% PVDF fluoropolymer directly translates to longer finish performance.

*Loss of adhesion is covered for 10 years in coastal application


Ultrex pultruded fiberglass, a material Marvin created over 20 years ago, was one of the first premium composite materials on the market. Highly durable, strong as steel, and extremely reliable, Ultrex performs as well years after installation as it does on day one.

Benefits of Ultrex Fiberglass

  • Expands and contracts at virtually the same rate as glass, so it works with glass rather than against it
  • Maintains shape even in harsh climates with regular exposure to temperature variation, wind, rain, or snow
  • First and only composite to achieve AAMA 624 verification, meaning that the finish has passed numerous rigorous tests
  • Resists chipping, chalking, or fading
  • Non-conductive and non-corrosive
  • Engineered to look the same years after installation

The Marvin Materials Difference: Ultrex Fiberglass

Ultrex pultruded fiberglass is a low-maintenance composite material with properties that create an ideal blend of toughness and longevity.

Not all composite materials are created equal. Some companies use materials like sawdust and vinyl to produce a composite material with fundamentally different properties and performance values. But Ultrex is different. Its material makeup contains a high density of woven fibers bound by a thermally set resin, making it more resistant to pressure and temperature than vinyl-based composites.

Ultrex’s enhanced performance over time and exceptional durability make it an ideal choice for customers seeking a strong, versatile, and long-lasting window or door.


Exclusive to Infinity, EverWood interior finish offers all the beauty and warmth of wood – with none of the maintenance.

Benefits of Everwood

  • Can be stained to match existing woodwork
  • Looks and feels like real wood
  • No sanding, scraping, or refinishing required

The Marvin Materials Difference: Everwood

Made from an inorganic material, EverWood won’t absorb moisture or decay over time. With EverWood, there’s no warping, discoloration, material degradation, expansion or contraction – just remarkably reliable performance and lasting beauty year after year.