Why Fiberglass?

Fiberglass windows and doors are clearly superior to Vinyl, Wood, and Aluminum for cold climates

Vinyl expands and contracts over 8 times more than fiberglass. The expansion/contraction problems that plague vinyl are virtually nonexistent with fiberglass.
Fiberglass is extremely strong - over 8 times stronger than vinyl.
Fiberglass requires no steel reinforcement, unlike vinyl, which allows us to fill the interior void of the sash or frame with insulation.
Insulated fiberglass frames have a greater R-value than wood, vinyl or aluminum frames.
Fiberglass can be easily painted to match existing décor; unlike vinyl which typically cannot be painted.
Great Land Window can provide many window types and configurations such as Tilt n' Turn, Casement, Awning, Fixed, Hopper, and Commercial Strip as well as Tilt n' Turn and Sliding Patio Doors.

Superior Strength

Fiberglass has over 8 times the strength of vinyl. This means that larger windows or window assemblies can be constructed; all without the use of any structural reinforcement or steel liner. Additionally, the greater strength of a fiberglass frame allows larger window walls to be spec’d without resorting to aluminum framed windows (and their inherent poor thermal performance).
In a fiberglass window the insulated unit (glass) is merely contained in the sash, not used as a structural member to reinforce an inherently weak frame like in a vinyl or wood window.

Eliminates Problems Due to Expansion & Contraction

The thermal expansion/contraction of vinyl is over 8 times that of fiberglass and window glass.
A reinforced 4’ vinyl profile will warp out of plane in excess of a 1/2 inch at an outdoor temperature of -40 ^oF. An identically sized and unreinforced fiberglass profile will move less than 1/8 inch over this same temperature change.
More importantly, the thermal movement of the fiberglass window frame is virtually identical to that of the window glass. This makes all the difference because it means that the fiberglass frame and insulated glass will expand and contract as a single, homogenous unit. This is in direct contrast to a vinyl-framed window that becomes laden with massive internal stresses due to conflicting thermal expansion among the window materials (vinyl frame and sash, necessary steel reinforcement, window glass, etc…).
In fact, the main reason that vinyl windows cannot be painted and require continual maintenance is due to the extreme expansion/contraction cycles of the material.

Improved Thermal Performance

Fiberglass frames will result in a window with a greater R-Value than a comparable vinyl, wood, or aluminum framed window; a worthwhile consideration given the ever increasing cost of fuel.
The interior of the fiberglass frame is filled with insulation further improving the thermal performance of the window frame.
Over time a high-quality window is always shown to be a worthwhile investment.

Paintable

Fiberglass windows, unlike vinyl, can be easily painted with ordinary paints at the factory or on site.
Five standard colors and virtually unlimited custom colors are available.

Many Options

Great Land Window can provide all common window styles including Tilt n' Turn, Casement, Awning, Hopper, Fixed, and Commercial Strip as well as Tilt n' Turn and Patio doors. Additionally, these window styles can be mated together in almost any configuration.
Fiberglass' superior strength and light weight allows Great Land Window to provide larger, more durable windows than is possible with Vinyl or Wood.
Our windows are made to fit existing openings and can be made in almost any size and shape making retrofitting and new construction simple. Detailed installation and initial adjustment directions accompany each window.