Essence Series® Wood Windows — Durability

Window care & warranty information – Built for a Lifetime, designed for minimal maintenance.
Essence Architectural Library

Durability - The story behind fiberglass.

What is fiberglass? It’s a composite structural material consisting of fiber reinforcements, typically glass, bound together in a resin matrix. Used in many applications from household fixtures (tub surrounds) to car bodies and aircraft fuselages. By using fiberglass as a structural core and exterior, Essence Series windows are strong, durable and easy to maintain in any climate.

Corner Sample

Milgard’s own fiberglass pultrusion process enables us to make the complex profiles required for the exterior look of painted wood windows. Because fiberglass is known for its strength, durability and performance, Essence exteriors:

  • Are scratch, dent and impact-resistant
  • Unaffected by time or temperature
  • Impervious to water, cold, & heat
  • Withstand the corrosive effectives of salt air and pollutants

Our proprietary powder-coat process uses a similar electrostatic technique as the auto industry to produce baked-on, sag-free, extremely durable exterior finishes that:

  • Resist scratches and gouges
  • Provide better color stability that withstands the construction process and weathers well
  • Takes paint easily with excellent adhesion

Essence Series windows and doors have an exterior coating so tough, an AAMA Gold Label Certification is expected upon completion of testing.

Fiberglass Pultrusion

Superior construction and performance

Essence Series windows and doors have the energy efficiency advantage with Milgard’s 3D® and 3D MAX® energy packages which maximize performance with innovative SunCoat®, SunCoatMAX®, Low-E coatings and EdgeGard™ or EdgeGardMAX™ spacers. (3D MAX availability is based on region.) There is also a wider glazing pocket for further energy efficient customization (such as triple glazing).

Taller sash stop on casement windows accommodates heavier hardware and enables windows to carry additional weight of triple glazing and other additions without additional bracing or exterior arms and limiters.

New integrated water drainage system ensures any moisture that might get into a window frame drains out and never touches wood components. Hidden weep system provides clean exterior appearance

A patent-pending secure connecting system combines wood and fiberglass parts for an extremely weather-tight window that operates smoothly and easily, and simplifies repairs. This Low Thermal Transmittance is a natural insulator because it won’t conduct heat or cold, has minimal condensation and is promotes homeowner comfort. Because of this connecting system, there will be no unsightly nail holes or staples.

Water system
Answer Center


Energy Calculator Installation and Finishing Case Studies Photo Galleries Find a Dealer