"Fiberglass", also known as fibreglass, glass-reinforced plastic (GRP), glass-fiber reinforced plastic (GFRP) or GFK, is a form of fiber-reinforced plastic where the reinforcement fiber is specifically glass fiber. This glass fiber, consisting of varying types of glass that usually contain silica or silicate and differing amounts of oxides of calcium, magnesium, and sometimes boron, can be randomly arranged or woven into a mat. The plastic matrix in fiberglass could be a thermosetting plastic—most commonly epoxy, polyester resin, or vinylester—or a thermoplastic.

Fiberglass is known for its strong yet lightweight characteristics and is utilized in a wide array of products. Even though it may not be as strong and stiff as carbon fiber-based composites, it is less brittle, and its raw materials are more cost-effective. Fiberglass also surpasses many metals in terms of bulk strength and weight and can be easily molded into complex shapes. Its applications encompass diverse fields, including aircraft, boats, automobiles, bath tubs, enclosures, swimming pools, hot tubs, septic tanks, water tanks, roofing, pipes, cladding, casts, surfboards, and door skins.

At Energy Shield Window & Door Company, we harness the power of fiberglass in the production of our entry doors. Engineered for the Arizona climate, our fiberglass doors offer superior heat reflection, dust control, and noise reduction. They are designed to solve common issues like drafts, high energy costs, poor insulation, and security concerns while enhancing the aesthetics of your home or commercial space. To learn more about our fiberglass doors, contact us at (623) 936-3758 or visit our website.

Three people sitting around a table looking at a laptop discussing replacement doors and window replacement.

Step 1

Design Consultation

Our design consultants will listen to your design needs and provide a plan to improve your home.
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Step 2

Measure & Manufacture

Project technicians ensure accuracy and answer any questions before ordering your fully customized windows.
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Step 3


Our installers treat your home as if it were their own and clean up afterwards.
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Step 4

Customer Care

A robust limited warranty is backed by our commitment to make sure your windows function as expected.

Proudly Serving Phoenix, AZ, and Nearby Areas

We are proud to serve Greater Arizona with energy efficient replacement windows, patio doors, and entry doors. In addition to the Phoenix metro area, we also serve Tucson, and Northern Arizona including Flagstaff, Prescott & other areas near you.

Arizona Service Area

Our door and window replacement experts service the greater Phoenix area. We go as far east as Florence, as far west as Wickenburg, as far south as Maricopa and as far north as Anthem.

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