FHB Logo Facebook LinkedIn Email Pinterest Twitter X Instagram Tiktok YouTube Plus Icon Close Icon Navigation Search Icon Navigation Search Icon Arrow Down Icon Video Guide Icon Article Guide Icon Modal Close Icon Guide Search Icon Skip to content
Subscribe
Log In
  • How-To
  • Design
  • Tools & Materials
  • Restoration
  • Videos
  • Blogs
  • Forum
  • Magazine
  • Members
  • FHB House
  • Podcast
Log In

Discussion Forum

Discussion Forum

Fiberglass entry doors

| Posted in General Discussion on April 9, 2005 02:18am

After much research, I have selected a ThermaTru Classic-Craft Mahogany entry door and I have several questions for anyone:

1. Any opinions on ThermaTru door quality? Do they come with decent hardware? Jambs?

2. Your opinion of staining a fiberglass door… the door “experts” at Lowe’s have warned me NOT to  stain it myself… have it done at the factory… I have trouble with this considering the factory staining is circa $500 and kit only cost $40 or so…

3. Your opinion on storm doors… sans screens… since the fiberglass door is well insulated, do I even need a storm door? (I live in Richmond, VA)… The door gets a direct afternoon sun and it can “bake” between the current storm and entry doors.

Thanks in advance…

Reply

Replies

  1. kestrel | Apr 09, 2005 03:00am | #1

    Hi YardApe,

    We stained our Therma-Tru.  It's not hard to do, just a little time consuming, waiting for each coat to dry.  We did ours with the door flat off its hinges, though the instructions made it sound as though it could be done in place.  I don't think I'd try it in place.  The results are excellent.  It looks great.

    Be sure to use the Therma-Tru kit.

    Our door is well protected, so we don't have a storm door.  Someone else may know if a storm door is advisable, or you could ask Therma-Tru.

    kestrel

    1. YardApe | Apr 09, 2005 03:12am | #3

      Thanks... I thought it was possible... the guys at Lowe's told me it was a real pain... I figured on taking it off the hinges and staining separate from the jamb... I understand that it does take some time so I'll have it all done before I replace the current entry door... WITH the Therma-Tru stain kit...

      Did you have any issues about humidity and the stain drying? I plan on staining the door in my garage and placing a de-humidifier close by...

      Thanks for youre feedback...

      Edited 4/8/2005 8:16 pm ET by YardApe

      1. kestrel | Apr 09, 2005 05:56am | #10

        Hi YardApe,

        We did ours last summer when temps were high, so relative humidity was fairly low.  We gave each coat a day or two just to be on the safe side.  We gave it extra time between sides because we wanted to be totally sure that it wouldn't stick when we turned it over to do the second side.  The dehumidifier is a good idea in humid spring weather. I think the instructions listed minimum temp for the stain.

        Our door had been at our local lumber yard for a couple of years and was rather dirty.  We just dusted it, cleaned the heavier dirt with a moist cloth, then went over the door with the mineral spirits the Therma-Tru kit includes.  It cleaned up perfectly.

        Just follow the instructions and you will have a door you can be proud of.

        kestrel

        1. YardApe | Apr 09, 2005 03:55pm | #13

          Bingo... thanks for your personal experience info... comforting...

        2. User avater
          BillHartmann | Apr 09, 2005 07:07pm | #17

          "We did ours last summer when temps were high, so relative humidity was fairly low. We gave each coat a day or two just to be on the safe side. We gave it extra time between sides because we wanted to be totally sure that it wouldn't stick when we turned it over to do the second side. The dehumidifier is a good idea in humid spring weather. I think the instructions listed minimum temp for the stain."General trick for things like doors. Now sure what the top and bottom rails are like in the FG doors, but this works for wood.Drive in a couple of nails or long screws into the top and bottom. Then use those suspend the door between 2 saw horse.You an finish one side and immediately flip it over and to the 2nd (and also the edges.

          1. kestrel | Apr 10, 2005 04:36am | #19

            Hi Bill,

            "Drive in a couple of nails or long screws into the top and bottom. Then use those suspend the door between 2 saw horse."

            "You an finish one side and immediately flip it over and to the 2nd (and also the edges."

            Therma-Tru's doors do have wood edges, so that would work.

            We have interior doors still to do, so you've saved us some time.   Thanks for the tip. 

            kestrel

  2. brownbagg | Apr 09, 2005 03:10am | #2

    Your opinion of staining a fiberglass door... the door "experts" at Lowe's have warned me NOT to stain it myself...

    you consider taking advice from someone that make $7 a hour, someone that cannot get a job at wally world.

    1. YardApe | Apr 09, 2005 03:15am | #4

      OUCH!!! That hurt... LOL

      It seemed that they promised to stain it a door for a customer and they didn't like the outcome... and the store ate 2 doors... DANG!... I wish I was there to pick them up for a song...

  3. User avater
    NickNukeEm | Apr 09, 2005 03:24am | #5

    Item #3, the heat buildup between door and storm door can be extreme.  I believe the most suspeptable part that can be damaged due to the heat is the plastic trim around any window.  I've installed some doors that state the warranty will be voided if a storm door is install without proper ventilation, whatever that might be.  Check the instructions and warranty info out carefully prior to buying/installing any storm door with plastic trim.

     

    I never met a tool I didn't like!
    1. YardApe | Apr 09, 2005 03:26am | #6

      I with you on that... I have yet to have seen a full glass storm door that had ANY ventilation... and, yes, whatever that is... LOL

  4. Notchman | Apr 09, 2005 03:37am | #7

    Check out the door when it arrives.  I've only installed a half dozen Thermatru entry doors;  four of them were OK, but on two of them, the top of the stiles exposed finger joint (looked like a good spot to catch moisture) and I sent them back.

    I've got an arrangement at my paint supplier to do any staining or painting because he has a large paint booth/room and the expertise to do a topnotch job.  It's a fill-in for him and he charges me $65 per door including delivery of the finished product.

    He told me early on;  clean the door meticulously with something like Paint-Etch because the faux wood grain tends to gather dust and cooties in storage and transit and can create adhesion problems if not removed. 

    His other advice was to do it on the flat and in a warm (70 degree range) environment, indoors, at moderate or lower humidity.

    His results have always been excellent and worth the 65 clams.

     

    1. YardApe | Apr 09, 2005 03:54am | #8

      Thanks... now I am in peruit of a paint supplier like yours... I'd pay $65 in a heart beat...

      I gotchya about cleaning the door... it'll be spotless when I am done with prepping... I hope...

      1. thunderthor | Apr 09, 2005 04:48am | #9

        I stained one once and was'nt satisfied with the results. I used gell stain (recomended) and it seemed difficult to control the results. I still have one that is in place and it needs to be stained but after doing the other, I'm not sure which door I like least. I'm thinking it would be better if I sprayed it with an HVLP.(?)

        1. kestrel | Apr 10, 2005 04:51am | #20

          Hi thor,

          Therma-Tru makes some doors that cannot be stained, only painted.  That may be what you have.  Also the stain needs to be Therma-Tru's kit, not a jell.

          If you want woodgrain and stain,  the door has to be a Fiber-Classic or one of the Classic-Craft lines. 

          I'm sorry your door didn't turn out well.

          kestrel

          1. thunderthor | Apr 10, 2005 05:40am | #21

            thanks for the info. I'll check into the kit, may be just what I need.

  5. dIrishInMe | Apr 09, 2005 02:29pm | #11

    I have built a number of homes in which we used therna-Tru doors.  Was very happy with them.

    Form reading here I gather that all Therma-tru doors are not created equal.  They are hung in a regional or local assembly shop and some do better than others.  This has been discussed here at length in the past.  Try the search function on the forum.  Hardware and jambs were discussed in-depth.

    Re staining, they need to be re-done every 5 years or so depending on the exposure.  Re storm doors check carefully with Therma-tru.  At one time they said they would not warranty the fiberglass door slab in such an installation.  This may have changed.  

    Finally, look for comments Gene.  If I remember correctly he worked in the door industry for some years and has a huge amount of knowledge on the topic.
     

    Matt
     
    PS - I did a search on "Therma-Tru" (correct spelling, I believe)  and got a lot of hits.  BTW - Gene used to post under the alias of Bob.  Maybe other aliases too...



    Edited 4/9/2005 7:32 am ET by DIRISHINME

    1. mccarty12 | Apr 09, 2005 02:47pm | #12

      In regards to your question about needing a storm door--I don`t put storm doors on with these new insulated doors. I don`t think they are going to help that much, they distract you from the beauty of your front door and there is another door to open. I like to keep my door open in the summer however so I like screens.

      I wouldn`t take the hinges off but just the hinge pins and tape off the hinge left on the door.

    2. YardApe | Apr 09, 2005 03:57pm | #14

      thanks for the leg-work... I'll do some searching for Gene aka Bob... :-P

      1. dIrishInMe | Apr 09, 2005 04:08pm | #15

        That will get ya about 10,000 hits... just search for "Therma-tru"Matt

  6. gdavis62 | Apr 09, 2005 04:55pm | #16

    Use ONLY Therma-Tru's finishing kit.  Don't let some doofus at Lowe's tell you that it is OK to use some gel stain and spar varnish.  How would he know what he is talking about?  From his parole officer?

    Therma-Tru's stain is formulated special for max adhesion to the SMC skin and the waterborne topcoat in the kit.

    Take the time to dismount the door slab from its frame, and do the job, one side at a time, on a table or padded sawhorses.  Use poly and tape on your entry to close things off at your front entry while you spend a few days on the door.  If you live in a dangerous neighborhood, maybe you can hire the Lowe's guy as your temporary security guard.

    People do them in place, hung from the hinges, but it is a whole lot easier to do flat.

    If you are nervous about doing it, buy Therma-Tru's video, or maybe by now, they offer it for free as a download.

    The key to staining a fiberglass door is in the removal of stain, not the putting on.  A section at a time, you put the stain on, using a rag or foam brush, enough to well cover, not a heavy wet coat, but just a coat to cover.  Let it flash dry, maybe 5 minutes.  Now comes the real work and artistry.

    You are going to even out and make uniform, the film thickness of the stain, once again, in a section at a time.  First the panels and their surrounding moldings, then the stiles and rails.  In doing this you will remove quite a bit of the stain that you applied, and by which time now, has "flashed off" and dried a little.  Just a little.

    With the good natural bristle brush they furnish (it is dry because you are smart, read the directions aforehand, and didn't use it to apply the stain), work to level and even out the stain coating.  Keep a clean rag in your other hand and frequently wipe clean the end of the brush.  You want to get it as clean as you can each with each wipe-off.

    You will find that you can move the stain around, thinning the coating here, adding a little film thickness there, all done to blend and even out the color.  You can work really hard here, breaking a sweat, if you want a light coating.  You'll work anyways.

    Once you have the whole thing the way you want it, let it dry overnight, then clearcoat with their waterborne finish.  Follow directions.  I think it cures rapidly and you might be able to get as many as four coats on in a day.  The more the better.

    The good thing about a fiberglass door stain job by a newbie, is that if it turns out poorly (blotchy, too light, too dark, etc.), and before you have put on the clearcoat, you can easily strip the stain all off, even if it has dried, using mineral spirits, and start all over.  You cannot do that with wood.  You also cannot do that if you have clearcoated the door over the stain.

    As to quality, Therma-Tru made the door slab, and maybe sold the distributor the hinges and sill and weatherstripping, but the prehanging distributor built the whole thing.  Blame him if the assembly has something wrong with it.



    Edited 4/9/2005 10:36 am ET by Gene Davis

    1. YardApe | Apr 10, 2005 01:10am | #18

      Gene,

      Thanks for your info... I'll definitely stay with the Therma-Tru staining kit... I'm also ordering the ThermaTru Framesaver jamb, mulllions, and brickmold... also getting their hardware and lockset... bottom line, all ThermaTru from the rough-out to the knob... one finger for the entire entry door... maybe a risk but easier on the mentality...

      Thanks again...

      Mark

    2. aleae | Apr 13, 2005 03:57pm | #22

      hi,

      does this description detail the procedure for staining the door with a wood color stain only?  i'm looking for a way to color my therma tru fiberglass entry door in a way that isn't a solid colored paint, but more of a colored stain.  the therma tru stain kits that we found only offer the wood type stains, like 'light oak' and 'mahogany'.  we tinted a white pickling stain with oil pigments on our interior maple cabinets.  obviously fiberglass is different, but i'm searching for a similar solution to achieve the translucent appearance of stain.  one suggestion was to thin down a regular paint to lower the pigment amount.  any dos, do nots would be much appreciated.

      luther

      1. gdavis62 | Apr 18, 2005 06:39am | #23

        I'm not with the company any more, but when I was, Therma-Tru offered a "pickled white" color in their stain.  Have you been to their site?  It is quite rich with information.

        1. thunderthor | Apr 19, 2005 04:47am | #24

          I'm also thinking on the same lines. Seems i could spray the door with a stain/finish and at least get a consistant appearance.

Log in or create an account to post a comment.

Sign up Log in

Become a member and get full access to FineHomebuilding.com

Video Shorts

Categories

  • Business
  • Code Questions
  • Construction Techniques
  • Energy, Heating & Insulation
  • General Discussion
  • Help/Work Wanted
  • Photo Gallery
  • Reader Classified
  • Tools for Home Building

Discussion Forum

Recent Posts and Replies

  • |
  • |
  • |
  • |
  • |
  • |
View More Create Post

Up Next

Video Shorts

Featured Story

Mortar for Old Masonry

Old masonry may look tough, but the wrong mortar can destroy it—here's how to choose the right mix for lasting repairs.

Featured Video

How to Install Exterior Window Trim

Learn how to measure, cut, and build window casing made of cellular PVC, solid wood, poly-ash boards, or any common molding material. Plus, get tips for a clean and solid installation.

Related Stories

  • Podcast Episode 690: Sharpening, Wires Behind Baseboard, and Fixing Shingle Panels
  • FHB Podcast Segment: Hand Tool Sharpening Tips
  • Old House Air-Sealing Basics
  • A Drip-Free, Through-Window Heat Pump

Highlights

Fine Homebuilding All Access
Fine Homebuilding Podcast
Tool Tech
Plus, get an extra 20% off with code GIFT20

"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.

Get home building tips, offers, and expert advice in your inbox

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters
See all newsletters

Fine Homebuilding Magazine

  • Issue 332 - July 2025
    • Custom Built-ins With Job-Site Tools
    • Fight House Fires Through Design
    • Making the Move to Multifamily
  • Issue 331 - June 2025
    • A More Resilient Roof
    • Tool Test: You Need a Drywall Sander
    • Ducted vs. Ductless Heat Pumps
  • Issue 330 - April/May 2025
    • Deck Details for Durability
    • FAQs on HPWHs
    • 10 Tips for a Long-Lasting Paint Job
  • Old House Journal – August 2025
    • Designing the Perfect Garden Gate
    • Old House Air-Sealing Basics
  • Issue 329 - Feb/Mar 2025
    • Smart Foundation for a Small Addition
    • A Kominka Comes West
    • Making Small Kitchens Work

Fine Home Building

Newsletter Sign-up

  • Fine Homebuilding

    Home building tips, offers, and expert advice in your inbox.

  • Green Building Advisor

    Building science and energy efficiency advice, plus special offers, in your inbox.

  • Old House Journal

    Repair, renovation, and restoration tips, plus special offers, in your inbox.

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters

Follow

  • Fine Homebuilding

    Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.

    Start Free Trial Now
    • Facebook
    • Instagram
    • X
    • LinkedIn
  • GBA Prime

    Get instant access to the latest developments in green building, research, and reports from the field.

    Start Free Trial Now
    • Facebook
    • YouTube
  • Old House Journal

    Learn how to restore, repair, update, and decorate your home.

    Subscribe Now
    • Facebook
    • Instagram
    • X
  • Fine Homebuilding

    Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.

    Start Free Trial Now
    • Facebook
    • Instagram
    • X
    • LinkedIn
  • GBA Prime

    Get instant access to the latest developments in green building, research, and reports from the field.

    Start Free Trial Now
    • Facebook
    • YouTube
  • Old House Journal

    Learn how to restore, repair, update, and decorate your home.

    Subscribe Now
    • Facebook
    • Instagram
    • X

Membership & Magazine

  • Online Archive
  • Start Free Trial
  • Magazine Subscription
  • Magazine Renewal
  • Gift a Subscription
  • Customer Support
  • Privacy Preferences
  • About
  • Contact
  • Advertise
  • Careers
  • Terms of Use
  • Site Map
  • Do not sell or share my information
  • Privacy Policy
  • Accessibility
  • California Privacy Rights

© 2025 Active Interest Media. All rights reserved.

Fine Homebuilding receives a commission for items purchased through links on this site, including Amazon Associates and other affiliate advertising programs.

X
X
This is a dialog window which overlays the main content of the page. The modal window is a 'site map' of the most critical areas of the site. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page.

Main Menu

  • How-To
  • Design
  • Tools & Materials
  • Video
  • Blogs
  • Forum
  • Project Guides
  • Reader Projects
  • Magazine
  • Members
  • FHB House

Podcasts

  • FHB Podcast
  • ProTalk

Webinars

  • Upcoming and On-Demand

Podcasts

  • FHB Podcast
  • ProTalk

Webinars

  • Upcoming and On-Demand

Popular Topics

  • Kitchens
  • Business
  • Bedrooms
  • Roofs
  • Architecture and Design
  • Green Building
  • Decks
  • Framing
  • Safety
  • Remodeling
  • Bathrooms
  • Windows
  • Tilework
  • Ceilings
  • HVAC

Magazine

  • Current Issue
  • Past Issues
  • Magazine Index
  • Subscribe
  • Online Archive
  • Author Guidelines

All Access

  • Member Home
  • Start Free Trial
  • Gift Membership

Online Learning

  • Courses
  • Project Guides
  • Reader Projects
  • Podcast

More

  • FHB Ambassadors
  • FHB House
  • Customer Support

Account

  • Log In
  • Join

Newsletter

Get home building tips, offers, and expert advice in your inbox

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters
See all newsletters

Follow

  • X
  • YouTube
  • instagram
  • facebook
  • pinterest
  • Tiktok

Join All Access

Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features.

Start Your Free Trial

Subscribe

FHB Magazine

Start your subscription today and save up to 70%

Subscribe

We hope you’ve enjoyed your free articles. To keep reading, become a member today.

Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine.

Start your FREE trial

Already a member? Log in