Why Fiberglass Doors are Better than Wood Doors

Fiberglass doors are also environmentally friendly

Person securing lock on door with screwdriver
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Fiberglass doors provide several advantages over traditional wood and metal doors. Fiberglass doors can be produced to look alike wood, and even a door expert cannot differentiate between them. Built tougher than regular doors, performing better under sudden climate changes and being able to be customized for your specific needs. Some manufacturer's even specified that their products contain no CFC'S, so you will get a product that will not harm the environment.

Even a new technology called 'Accugrain,' introduced by Therma-Tru, duplicates the grain of real wood. Although Therma-Tru can be considered the pioneer of this method, many such as Jeld-Wen, Masonite and Plastpro have followed and used the same technique. Many builders are opting to use fiberglass french doors as entry doors but also on garages and many other areas around the house. However, keep in mind that these doors might crack if they are hit hard.

Benefits of Fiberglass Doors

Fiberglass doors might present you with a higher up-front cost when compared with traditional wood and metal doors, but in the long run, the benefits will surpass that initial investment. These doors will rarely be scratched, peel or warp, and can resist different weather conditions performing better and lasting longer than wood doors.

  • Tougher than vinyl doors

  • Available in a wide array of colors and styles

  • Can be customized to your size selection

  • Low-maintenance material

  • Will not buckle

  • Real wood like finishing

  • Excellent protection against dents

  • Can be painted easily 

  • Fiberglass doors are filled with insulating foam, offering at least five times the insulating properties than wood doors

Fiberglass Door Comparison Against Wood and Steel Models

Summary of Door Disadvantages
Wood DoorSteel DoorFiberglass Door
Can be expensiveCan be dentedNo limitations
Susceptible to moistureEasily rusted 
Can warp or twistTemperature can get through it 
Will peel and/or bubble outPaint will peel with time 
Will Fade  
Not energy efficient   
Very high maintenance  
Overall Advantages of Different Door Types
Wood DoorSteel DoorFiberglass Door
Looks of wood grainOffers good R- ValueAlmost none to zero maintenance
'warm feel'Less expensiveWill not rust
Pleasant and aesthetic finishEnergy efficientEnergy efficient
Can be repaired easilyVery toughCan be painted
 Sometimes maintenance is not an issueMany textures available
 Crack resistantScratch-resistant
  Won't twist
  Offers security
  5X wood R-Value 


Be aware that although fiberglass doors are commonly used in many houses, they can also be warped. This can be prevented by cleaning them regularly and protecting them from the sun and UV exposure. Look for doors that have been assembled using  reinforced fiberglass panels, full-length stiles, and water-resistant seals.

Fiberglass Door Costs and Installation

As usual, the cost of a fiberglass door will vary depending on the finishes and installation procedure. On average, these doors can cost around $500 for a regular basic door and can go as high as $2,500 depending on the product type. On top of this, regular sealing and staining will add some extra money for the property owner so be aware of that maintenance cost. Some of the most important factors that can affect pricing are:

  • Door size and shape
  • Window style if any
  • Paint and appearance
  • Alternate finish options
  • Weather protection or resistance
  • Door hardware and detailing.

In addition to these costs, the material on which the door and frame will be installed can make the price swing up almost as much as the door cost itself. In general, fiberglass doors can be installed using the same cost as those billed for a wood door. For better pricing and more accuracy, it is recommended to produce a field installation estimate, as measurements and opening dimension needs to be precise and a complete assessment should be performed. You can always ask for assistance from the American Window and Door Institute.