Fiberglass

Superior Thermal Performance and More Beautiful Views


It’s a strong statement, and we stand behind it: Accurate Dorwin fiberglass window systems, featuring technologically advanced pultruded fiberglass lineals, are superior to PVC, aluminum, or metal-clad wood window frame materials.


In 1983, Accurate Dorwin developed a new and unique window system that utilized a pultruded fiberglass frame, insulating foam, and high-performance insulated glass. Today we refer to it as the Fiberglass Advantage.



It’s a strong statement and we stand behind it: Accurate Dorwin fiberglass window systems featuring technologically advanced pultruded fiberglass lineals are superior to PVC, aluminum, or metal-clad wood window frame materials.


In the window market for over 50 years, Accurate Dorwin developed a new and unique window system in 1983 that utilized a pultruded fiberglass frame, insulating foam and high performance insulated glass. Today we refer to it as the ultimate window.


As the ultimate window frame material, pultruded fiberglass features superior performance that is recognized in a number of ways.


Energy Efficiency

Durability

Extremes

Green Friendly




As the ultimate window frame material, pultruded fiberglass features superior performance that is recognized in a number of ways.


Energy Efficiency

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The Best Performance


The best energy performance in window frames has been achieved using a fiberglass frame with foam insulation in the frame cavities.Consumer’s Guide, Natural Resources Canada

Most consumers agree that energy savings is the single most important environmental consideration when purchasing windows. Both Canadian and U.S. governmental agencies put fiberglass windows at the top of that list.

New Energy Rating (ER) numbers, developed by Natural Resource Canada and the window industry, show that fiberglass frames have the highest energy efficiency of any frame material – yes, performing better than PVC, aluminum and metal-clad wood frames. Similar evaluation by the U.S. Department of Energy concludes the same.

Fiberglass has the highest “R” Value of all window frames.U.S. Department of Energy (DOE)

How is ER determined? The ER considers heat loss, resistance to air leakage losses and heat gain. Heat loss is a weighted average of all components: center of glass, edge of glass and frame. Heat gain is an average of the solar radiation for each direction (north, south, east and west). When combined with equally high-performance insulating glass, Accurate Dorwin windows receives one of the highest ratings of any product available.

Enjoy the confidence in knowing these facts speak for themselves. You are choosing the absolute best in energy savings for your home.

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Durability

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Superior Durability & Beautiful, Too

Thanks to its strength, fiberglass windows have slimmer profile frames. This creates an attractive sleek profile. It also allows for even better scenery – more glass and grander views – wherever they’re placed.

No premature fading like vinyl, chipping or rotting like wood, or denting like aluminum, which also does not hold paint well. Impervious to water, UV rays and temperature extremes, fiberglass is truly a beautiful low-maintenance choice.


Low Maintenance

Save your time and energy with fiberglass. You won’t be dealing with rotting, warping, twisting, shrinking, denting or bowing window frames.

Structurally, fiberglass is both stronger and harder than metal-clad wood, PVC and roll-form aluminum. Fiberglass profiles are carefully engineered so that the fiber strands offer incredible longitudinal and transverse strength.

In terms of weather wear, Accurate Dorwin uses high-grade finishes that are incredibly durable. Accelerated aging tests have shown excellent resistance to UV (causing fading) and minimal weathering. Vinyl, especially when tinted, tends to discolour and become brittle over time. Wood, a natural material, is well known to deteriorate. Unlike aluminum, fiberglass is both strong and resilient enough to resist denting. Plus, fiberglass doesn’t corrode or pit, making it ideal for coastal applications.

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Extremes

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Whatever the Weather


While traditional window framing materials are dimensionally stable on the shop floor, how they perform in the real world during extremes of humidity, heat and cold is quite a different story. With metal-clad wood, PVC and aluminum frames, the varying expansion rates between the glass and frame can result in stressed frames, air leakage, broken glazing seals, condensation and inoperable hardware. With fiberglass, the window glass and frame materials are the same, allowing the window glass and frame to expand and contract at the virtually same rate.

For example, extensive cold chamber testing by Natural Resources Canada has shown how window framing materials perform in real world conditions.

The results show that PVC operable windows, although well weather-stripped, suffer massive air leakage under simulated cold weather conditions. It has long been known that wood is prone to warping, shrinking and deterioration. Even aluminum has a coefficient of expansion that is twice that of glass. Aluminum frames must incorporate non-metallic thermal breaks in order to provide even a minimal degree of insulation.

Fiberglass expands at virtually the same rate as glass. Wherever you live, in any environmental condition, you’ll know that your Accurate Dorwin windows can handle Mother Nature’s extremes.

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Green Friendly

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Straight Talk

Green building professionals, LEED designers and conservationists look to a number of factors to determine what makes a green friendly window. Fiberglass is becoming a leading window material of choice for building green. Its proven environmentally friendly aspects contribute to achieving LEED credits and status.

What exactly makes Fiberglass windows green?


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    A LEED Material of Choice

    The Leadership in Energy and Environmental Design (LEED) Green Building Rating System™ encourages and accelerates global adoption of sustainable green building and development practices through the creation and implementation of universally understood and accepted tools and performance criteria. Fiberglass windows are among the approved materials to develop structures that meet this criteria to achieve LEED certification.

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    Energy Use

    Most experts and consumer advisory groups agree: energy use is considered to be the most important environmental factor to consider. That’s why consumers are encouraged to look at ENERGY STAR, the National Fenestration Ratings Council and Energy Rating values as proven indicators of high-performance windows. It is also proven the energy efficiency of fiberglass is the highest of all frame materials compared to PVC, aluminum and metal-clad wood.

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    Longevity

    Fiberglass windows have an outstanding life expectancy. Dubbed “the first 50-year window”, the combined long life and efficiency of fiberglass windows significantly reduces then need for purchased energy, which means that their impacts on resource depletion and embodied energy is also limited.

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    Materials Used

    The raw material for fiberglass is natural. Fiberglass for window frames is made from 65% – 85% silica sand. Silica sand is melted and spun into glass fibres, with minimal waste. The excess is recycled into other products

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    Resource Depletion

    The raw material reserves for silica sand are plentiful. In addition to minimal waste, the remainder is reused and re blended for other products such as asphalt. The amount of petroleum is relatively small and contributes to a durable product that has a long life and energy efficiency not available from other window frame materials.

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    Emissions During Manufacturing

    Glass fiber production is a closed process, with few emissions escaping to the environment. Resin manufacture is also a closed process, with very few emissions. Fiberglass pultrusion has the lowest embodied energy consumption compared to other frame material, with very little energy used to manufacture the product.

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    Ozone Depletion

    There are no ozone-depleting chemicals used in the manufacture of fiberglass windows.


Expert Assessment Example:

The environmental impacts of windows were studied as a part of the design process for the Waterloo Region Green Home. Engineers considered eight environmental factors when the decision was made to install Accurate Dorwin fiberglass windows. A comparison to metal clad wood and vinyl high-performance windows considered:

Materials Used
Resource Depletion
Manufacturing Emissions
Embodied Energy
Energy Used During Life
Ozone Depletion
Emission During Life
Disposal

From this standpoint, fiberglass windows have the lowest overall environmental impact.


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How our fiberglass is made


Accurate Dorwin Pultruded Fiberglass ProcessProviding unparalleled strength and stability for boats, automotive and performance products, fiberglass can withstand the most extreme weather conditions and is impervious to water.

The manufacturing process for fiberglass windows is different from traditional application. Accurate Dorwin windows are created using a pultrusion process. Glass fibers are coated in a thermoset resin and pulled through a hot die the shape of the frame or sash profile. They are pulled through the die rather than pushed or extruded through the die, hence the term pultrusion.

Heat cures the fiberglass resin to form a permanent shape, which can’t be reformed by any environmental conditions. Its strength allows for narrower frames that provide a larger window viewing area.


Providing unparalleled strength and stability for boats, automotive and performance products, fiberglass can withstand the most extreme weather conditions and is impervious to water.

The manufacturing process for fiberglass windows is different from traditional application. Accurate Dorwin Windows are created using a pultrusion process. Glass fibres are coated in a thermoset resin and pulled through a hot die the shape of the frame or sash profile. They are pulled through the die rather than pushed or extruded through the die-hence the term pultrusion.

Heat cures the fiberglass resin to form a permanent shape, which can’t be reformed by any environmental conditions. Its strength allows for narrower frames that provide a larger window viewing area.

Energy Efficient Fiberglass Windows in Winnipeg | Accurate Dorwin Pultruded Fiberglass Process

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