Fiberglass Windows & Doors

Fiberglass windows and doors are becoming a powerful player in the window industry today. Although they have been around for years, the pultrusion process has made the complex shapes needed to make windows and doors more affordable. Fiberglass mote and fibers are soaked in a plastic resin and then pulled through heated dyes to form the lineal shapes. The material is cut and assembled in a similar fashion to an aluminum frame screwing the corners together and sealing the joints. Fiberglass windows compare well to those of other building materials.

  • Energy Savings: Fiberglass is an excellent insulator, making it a great choice for windows and patio doors.  It is the most energy efficient window made today.
  • Convenience: Fiberglass is an extremely strong frame material. It is one of the most durable and can be painted with either acrylic or oil based exterior paints. Because fiberglass is a stable, (resists swelling and shrinkage), paint finishes last far longer.
  • Durability: Quality Doors and Windows fiberglass windows and patio doors are backed by a lifetime warranty, which exceeds the warranties offered by most wood and aluminum window manufacturers. All products are tested and certified for structural and thermal performance to insure a lifetime of performance.
  • Appearance: A wide selection of window styles and sizes from many different window manufacturers assures that you’ll find a window to enhance the look of your home. Fiberglass windows don’t rot, corrode, flake or peel therefore factory finishes never need to be painted unless you wish to change the color. Their appearance is easily maintained with periodic cleaning. Fiberglass windows have narrow sightlines that work well for many homes where the frames of vinyl or wood may appear heavy and bulkier.
  • Value: While fiberglass windows tend to cost more the most of the other frame systems, the aesthetic appeal, strength, durability, and thermal performance makes this frame system an excellent choice for any home. The amount you spend returns to you every month in the form of lower utility costs, improved appearance, and greater indoor comfort.

The combination of aesthetic appeal, energy efficiency, low maintenance and durability provides equal or better performance than almost all other materials.

Why should I replace my existing windows?
Quality Doors and Windows offers many styles from top manufacturers to give your home a beautiful new look while improving energy efficiency. Quality Doors and Windows can change the appearance of your home and add value to your home while cutting down your heating and cooling bills. Aluminum windows never need painting and are easy to clean, so you’ll spend less time worrying about your windows and more time enjoying yourself.

What are R-values and U-values?
The R-value is the resistance a material has to the flow of heat (the higher the R-value, the greater the insulating value). R-value is the opposite, or reciprocal of U-value.

The U-value is the amount of heat that is transferred through a material – the lower the U-value, the better insulating quality. U-value is the opposite, or reciprocal of R-value.

How can I determine the energy efficiency and durability of Quality Doors and Windows or any window?
For answers to many of your questions regarding energy efficiency, performance and durability of aluminum windows please visit our Comparing Windows section.

Two organizations, the American Architectural Manufacturing Association (AAMA) and the National Fenestration Rating Council (NFRC), test the performance and quality standards for windows.

The NFRC established standards for thermal performance.

  • U-factor: This is a measure of heat loss. The lower the U-factor the better.
  • SHGC (Solar Heat Gain Coefficient): Measures the amount of heat gained through a window. Once again the lower the better.
  • VT (Visible Transmittance): The higher the visible transmittance, the more daylight is transmitted. A high VT is desirable to maximize the amount of daylight entering the home.

The AAMA established standards for structural integrity, air infiltration, water infiltration resistance and forced entry resistance.

    • Structural Integrity is the ability to withstand wind and other dynamic pressures. This is rated in design pressure (DP). The higher a product’s design pressure rating, the greater the amount of wind or pressure the window will withstand.

  • Air Infiltration tests measure a window’s ability to resist air from passing through the frame and sash of a window at the equivalent of 25-mph wind. The lower the air infiltration rating the better.
  • Water Infiltration tests a window’s ability to resist water leakage through the window frame, sashes, joints, weather-stripping, etc. No leakage is permitted under these test criteria.
  • A Forced Entry test is performed by a certified lab technician using many different tools in an attempt to try and break into a home through the window. Next, windows and doors are subjected to hundreds of pounds of force to try to lift or push them open while in the locked position.


What is ENERGY STAR and how does a window company qualify for ENERGY STAR compliance?

ENERGY STAR was started by The United States Department of Energy and the Environmental Protection Agency. ENERGY STAR helps businesses and consumers become aware of what products save energy to save money while protecting the environment for future generations. When a product fits the requirements for ENERGY STAR that product then qualifies for the program. All windows and doors offered by Quality Doors and Windows meets ENERGYSTAR requirements.

Are Quality Doors and Windows available in varying sizes?
All Quality Doors and Windows are custom made for your home. We have many sizes and shapes to choose from.

What is insulated glass and why does Quality Doors and Windows recommend it?

Insulated glass consists of two pieces of glass sealed to a spacer. This creates an insulated air space between the two pieces of glass, resulting in better thermal performance. Many manufacturers inject the airspace with gasses such as argon and krypton to increase the thermal effectiveness of the insulated glass unit. Insulated glass also reduces condensation while keeping the heat in during the winter and the heat out during the summer.

What is condensation and what causes it?

Condensation is the result of excess humidity, or excess water vapor in the air coming into contact with a cooler surface such as a window causing visible droplets of water. All windows are built with features to keep the surface of the glass warmer to avoid condensation. When humidity conditions are extremely high, use the following suggestions to help reduce the moisture in the air:

  • Open windows frequently to “air-out” your home.
  • Use a dehumidifier.
  • Use venting fans in the kitchen, bathroom and laundry room.

What is Low E glass and how does it work?
Low E (low emissivity) glass provides year round comfort and energy savings. Thin, transparent metallic coatings applied to the glass selectively filter solar radiation. During the summer, Low E reduces heat gain, keeping your home cooler. Low E glass helps keep you warmer in the winter by reflecting heat back into your home.

What kind of maintenance do my new Quality Doors and Windows require?
Quality Doors and Windows aluminum windows are virtually maintenance free. They are unaffected by moisture, salt air, pollution and airborne chemicals. Aluminum will not pit, peel, flake or corrode making it unnecessary to paint. Cleaning them is easy using a simple cloth and mild detergent. Do not use harsh detergents or solvents as these could damage the finish or appearance of the windows.


What types of operable windows are available in Thermal Brake Aluminum?
Quality Doors and Windows installs aluminum windows that are:

  • Single hung
  • Double hung
  • Horizontally sliding
  • Casement and Awning
  • Fixed and Special shapes

All windows are custom made to fit to insure the best thermal effectiveness and durability.

How can I find out more about Quality Doors and Windows?
Quality Doors and Windows is happy to provide a free, on location, no obligation estimate. If you have additional questions about our line of quality windows and doors, you can Contact Us by email or call us at 972-596-4043. We are always eager to help you.