Fiberglass Entrance Doors 229x146

You may be building a new home, or replacing your windows and doors in your home, or even upgrading to better quality. When choosing an entry door, one of the main factors to consider is the material of the door.

Comments (15)

  1. vic
    January 9, 2015

    my understanding is there is no difference in R value between fiberglass and steel.

    • Fibertec Windows
      January 19, 2015

      Hi Vic,
      Standard fiberglass doors can achieve an R value of around 10-12 and can reach higher insulation values depending on if the door has glass, how big the glass may be and other insulating factors, whereas steel doors usually achieve a value of R-5 to R-6. It is possible to have an insulated steel door reach R-11, however fiberglass doors are still the ultimate choice between the two because fiberglass is a much stronger and durable material than steel and will last you longer, making the cost difference legitimate.
      Fibertec Windows and Doors

  2. shekhar
    July 27, 2015
  3. Albert
    November 7, 2015

    I need a fiber glass or wood or metal entry door to the following dimensions and specifications
    if you can help me provide these and deliver them to me I am in San Jose CA and I would appreciate that.

    • Fibertec Windows
      November 9, 2015

      Hi Albert,
      We have contacted you via email and are looking forward to hearing back from you.
      Fibertec Windows and Doors

  4. Duane
    January 26, 2016

    We are looking at replacing fiberglass doors that have warped at least a 1/4” at the top and bottom of the door that are about 8 yrs. old. We currently have the serious issue of snakes finding the openings left by the warping of the door. We have been given opinions of fiberglass is made better and will not do this now to they still warp. We are thinking steel may still be our best choice. Keep in mind these doors will be French doors and most of the material will be glass. We are dealing with a situation that the doors are in intense summer heat. And we are aware that the surface of the door may get hot. So I guess our question is: Do they make fiberglass better than 8 yrs. ago, and would we still be looking at the doors warping?

    • Fibertec Windows
      February 2, 2016

      Hi Duane,
      Your situation consists of many different aspects that should be taken into consideration. In regards to fiberglass technology, fiberglass frames can be pultruded in many ways and each company goes about designing the best fiberglass profile possible. The reason for warping could have been caused by different things such as the strength of the frame. Is it a closed back frame or open back frame? The technology in fiberglass frame manufacturing as,like any other material improved over the years and continues to develop. I’m interested to understand further how this happened. I sent an email your way and and looking forward to your response.
      Fibertec Windows and Doors

  5. Lilian
    February 11, 2016

    I got this website from my pal who shared with me about
    this site and at the moment this time I am visiting this web page and reading very
    informative articles or reviews here.

  6. Ross Park
    August 22, 2016

    Would appreciate your Professional Comment on the following. Builders today use steel construction grade entrance doors either slab and or 6 panel, throughout the construction of the home and at the end paint it and leave it. Can you tell me the R factor on these doors.

    Thank You

    Ross Park

    • Fibertec Windows
      August 23, 2016

      Hi Ross,
      This will all depend on how the door is manufactured, and whether or not there is any foam insulation in the doors.
      Fibertec Windows and Doors

  7. John Anderson
    October 23, 2016

    I live in south central Texas and am replacing a west facing entrance, wood door with either a fiberglass or steel door. It will have a full view LowE glass panel with built-in mini-blinds. I am concerned about heat transfer on my replacement door because I have noticed that the inside of my wood door double pane glass feels very hot when the sun is on the door. Considering that most of the door surface is glass, will a fiberglass door have significantly less heat transfer than an insulated steel door? Please advise ASAP because I need to make a decision soon. Fibertec doors sound well made.

    • Fibertec Windows
      October 25, 2016

      Hi John,
      Yes it would be safe to say that fiberglass doors will have less heat transfer than a steel door. The glass coating that we use will also have impact on the heat transmittance into your home. If you would like to receive a quote, please send us an email to and we will be able to process your inquiry further.
      Fibertec Windows and Doors

  8. betty sacks
    November 30, 2016

    looking for new doors (interior and exterior…combination with the whole door jam…for my mobile home..having trouble finding the size i need in energy efficent fiberglass doors…doors in here are 30×76 left hung and 32 x76 right hung …both could be 32×76…want solid doors not these cheap things on here..full view out side doors…Could you tell me where you are, what you have available and shipping cost?..I live in kentucky…ty for your time..

    • Fibertec Windows
      December 19, 2016

      Hi Betty,
      Thank you for your inquiry! It would be best if you send this information to and we will gladly help you out.

      Best Regards,
      Fibertec Windows and Doors

  9. Jenna Hunter
    December 13, 2016

    It was compelling to learn that fiberglass doors look very similar to a wood door, and are much less expensive than what you would pay for an oak or mahogany door. Our current door is wooden and is rotting at the bottom edges! Glad to know that there are other options that are less expensive! I will be sure to look into these types of doors when we need to replace ours!

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