Subscribe Today
Give a Gift
Customer Service

Phoenix Home and Garden
Subscribe Today!
For the HomeFor the GardenFood & EntertainingResourcesArticle Archive
For The Home

Fiberglass Doors

Author: Shawndrea Corbin
Issue: January, 2013, Page 52

High Fiber

Known for its durability and customizable flexibility, fiberglass is made from a strong polymer plastic that is reinforced by thin glass fibers. Unlike wood, which often swells, causing an improper fit when used in a door, fiberglass is resistant to swelling. Therma-Tru’s fiberglass doors include a system of components designed to maximize the door’s security and energy efficiency. The company’s Tru-Defense Door System creates a seal between the door and its frame to keep out the damaging effects of the elements and increase energy savings.

The system also includes weatherstripping, corner-seal padding and a door-bottom sweep. Plus, an online “Door Design” program lets customers preview doors in the context of their own home as well as in custom shapes and designs.

For more information, visit

Fiberglass was first used in the 1930s for home furnace filters and insulation.

Q - How do you determine if your front door is energy efficient or if it is time for a replacement?

A - Mark Montgomery of First Impression Security Doors, Inc. defines an energy-efficient door as “a properly fit door that has been installed using high-quality weatherstripping, a threshold sweep at the bottom and locking mechanisms that reduce gaps when the door is closed.” He notes that properly fit doors increase security and privacy. “They eliminate gaps, which can allow a security breach by a burglar or pests common to our desert climate, such as scorpions, spiders or snakes,” Montgomery explains.

Derek Fielding, senior product manager at Therma-Tru Corp., says that doors are an important aspect of the “housing envelope,” and can have a substantial impact on a home’s energy efficiency. He recommends the following:

Research your options—If choosing a door with privacy glass or sidelights, select glass that is triple-paned. If not available, request glass with Low E coating, which allows in light but reduces solar heat.

Touch your current door on hot and cold days—If you are able to feel the exterior temperature on the inside, the door may not be properly insulated.

Inspect all weatherstripping—To determine its efficiency, stand inside and look for daylight visible through the perimeter of your door. If you see light, this may indicate that external air and moisture are breaching your entrance. Replacing worn or damaged weatherstripping is relatively easy and will save you money on your energy bills.

Open and close doors on dry, wet and humid days—On humid days, if the door fits tightly, it is most likely leaking air on dryer days. Fiberglass doors resist swelling and are energy efficient.

For details regarding fiberglass doors, replacement materials and security, visit or
Subscribe Today!