Fiberglass Doors: Fact vs. Fiction
When it comes to fiberglass doors , there’s always misconceptions and misinformation regarding their performance and maintenance.
In this blog, we bust the myths regarding fiberglass doors and separate fact from fiction.

fiberglass doors are susceptible to warping
Any door – fiberglass or not – which does not have a good internal frame could possibly warp.
This is true from some fiberglass doors imported from Asia. Because they are built quickly and cheaply, they may not have the structure needed to prevent warping.
Solidly build fiberglass doors (like Therma-Tru) are made with a powerful LDL inner frame that will not allow the door to warp.

fiberglass doors are more expensive than steel doors
The Door Centre has partned with OSTACO Windoors to provide smooth-skinned fiberglass door systems.
In combination with Therma-Tru door panels, the resulting door can complete directly with steel insulated door systems in terms of price and durability.
This means that, in some instances, fiberglass doors are less expensive than their steel counterparts.
Fiberglass doors can’t handle Canadian weather
Therma-Tru fiberglass doors were first developed over 30 years ago. That’s given them plenty of time to test their mettle against cold Canadian winters and hot Ontario summers.
Over time, they’ve proven to be more reliable than steel doors. This is because fiberglass doors:
- Won’t dent
- Aren’t prone to rust
- Warmer to the touch

Fiberglass doors need multi-point locks
Regular height doors from The Door Centre require regular lock and handle sets. No customization required.
The only reason anyone would use multi-point locks is to offset the warping issue that can be found in certain fiberglass doors.
However, for doors which are eight feet tall, you should use ask your contractor to use multi-point hardware to counteract wind deflection that can be found at the top of the door.
We’re your source for high-quality fiberglass doors
Thinking of installing fiberglass doors in your home?
If so, there are two things you should do:
- Get all the facts on fiberglass doors (which you just did by reading this article)
- Contact us to get a FREE quote on our selection of fiberglass doors
The post Fiberglass Doors: Fact vs. Fiction appeared first on The Door Centre.





