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

Seal at bottom of sliding door

| Posted in Construction Techniques on November 25, 2003 03:00am

I have a sliding door (like a barn dooe) And I need to seal the bottom of it. I have about a 4 inch gap. And I’m on a slab foundation with radiant heat. I’m starting to get mice with winter coming on. what is the best way to seal it up? Thanks Hat   

Reply
  • X
  • facebook
  • linkedin
  • pinterest
  • email
  • add to favorites Log in or Sign up to save your favorite articles

Replies

  1. csnow | Nov 25, 2003 09:14pm | #1

    Slinding things are inherently difficult to seal.

    Your best bet would likely be to fabricate some sort of threshold.

    Once saw one made from a length of PVC pipe cut in half.

    The door bottom was routed concave to match the profile of the PVC (to keep it 'on track), and door bottom had 2 rows of nylon brush seal (on each side of routed area) to sweep on the PVC.

    This was on a sliding barn door, and a major plus to this design was that this sort of 'convex' threshold did not accumulate water, ice, or debris.  Nor did it create a tripping hazard

    Perhaps you could use some of the specialized seals from this outfit.

    http://www.conservationtechnology.com/



    Edited 11/25/2003 1:24:53 PM ET by csnow

    1. User avater
      IMERC | Nov 25, 2003 09:31pm | #3

      Set the door level or you can match the door to the concrete.

      Install a crossover threshhold on the CC. Scab a filler piece to the bottom of the. (now's the time to really match up the fit) Add a door gasket.

      Plan "B"

      Slope the threshold and mate the bottom of the door to match. Say a 1/4 to 3/8" slope over the width of the door. Set the slope of the threshold so that when the door is closed you have a snug gasketed fit. When the door is slid open a gap opens and the door gasket doesn't drag on the threshhold.

      See it as you are closing the door, the door gasket makes a firm contact on the last foot of closure.  

      Who ever invented work didn't know how to fish....

      1. csnow | Nov 25, 2003 09:47pm | #4

        Hey Imerc,

        Cool idea!  No friction while sliding until the last bit of travel.

        1. User avater
          IMERC | Nov 25, 2003 10:39pm | #6

          It works on the biggest and meanest of doors. The wimps too.

          Most common door in these parts. 

          Who ever invented work didn't know how to fish....

      2. User avater
        Sphere | Nov 25, 2003 10:10pm | #5

        Did I read a 4" gap?...

        1. User avater
          IMERC | Nov 25, 2003 10:40pm | #7

          Yup 

          Who ever invented work didn't know how to fish....

        2. TimGoins | Nov 26, 2003 08:14am | #9

          Yes give or take. The bottom of the door sits below slab Hat

          1. User avater
            IMERC | Nov 26, 2003 08:52am | #10

            Add a butting threshold to the slab so that it's up against the insise of the door. Put a wiper gasket on the face of the threshold. 

            Who ever invented work didn't know how to fish....

  2. User avater
    goldhiller | Nov 25, 2003 09:22pm | #2

    Hat,

    Clarification, for me at least........if you would. Do you need to seal directly under the bottom edge of the door or against the side of the door's bottom? In other words does this door live on top of your slab floor or outside of it?

    I presume there's a frame to this door..???

    Knowledge is power, but only if applied in a timely fashion.
    1. TimGoins | Nov 26, 2003 07:36am | #8

      It is next to slab. It is hanging from the hardware at the top. Thanks Tim

      1. User avater
        goldhiller | Nov 26, 2003 06:26pm | #11

        There's probably many different avenues to keeping the mice and weather out. Using the KISS principle, I drew up a few that might serve to give you ideas.

        If none of those seem appropriate or suitable, you could also consider doing what I did at my shop, which has a pair of roll doors. I made and mounted a second set of doors and tracks just inside the roll doors. These are a pair of open frame sliding doors (with center stile in each) that occupy the entire area of the roll door jamb opening and have screen mounted in them for the summer. I made a second set of frames which house rigid insulation panels and these are applied over the screens for winter (one on the outside of one door and the other on the inside of the other door). The result for me is one of pretty weather-tight inexpensive versatility that allows using the entire opening because the doors and guides (fastened to floor and head jamb) are built such that you can simply lift up on either door and slip the bottom of the door out of the floor guides giving immediate access to the entire opening when needed for moving machinery or really large objects in and out of the shop. And when those stiff north winds are howling against those doors, I can simply roll the outside doors shut too and that helps take alot of the bite out of that wind.

        With the roll doors shut at night, they serve to keep the snowdrifts out of the secondary doors so some troubles of winter are eliminated and the inner set of doors are protected from rain in the summer months. The floor guides are screwed down and easily removed if I need to drive right into the shop with a piece of machinery on the skidloader.

        Edit: Realized that two of the ideas I sketched violated the KISS principle as they would require that you had space in between the inside of the doors and the siding to accomdate them. That could cause you to rehang the doors, bumping out the track. The gap could be closed with wider stoppings, but that sort of thing should be a last resort really. I'll post the simpler ideas in exchange.

        Knowledge is power, but only if applied in a timely fashion.

        Edited 11/26/2003 4:08:53 PM ET by GOLDHILLER

        File format
      2. User avater
        goldhiller | Nov 27, 2003 12:30am | #12

        See if either of these might work for you and get you sealed tight enough for winter. Gonna depend on how flat and true your doors are, I think.

        Knowledge is power, but only if applied in a timely fashion.

        File format

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

Vintage Sash Windows Get an Energy-Efficient Upgrade

Low-e storm panels improve the energy efficiency of these old sash windows without changing their classic look.

Featured Video

Builder’s Advocate: An Interview With Viewrail

Learn more about affordable, modern floating stairs, from design to manufacturing to installation.

Related Stories

  • Insulation for Homes in the Wildland Urban Interface
  • An Impressive Air-to-Water Heat Pump
  • From Victorian to Mid-Century Modern: How Unico Fits Any Older Home
  • Designing the Perfect Garden Gate

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
  • Issue 329 - Feb/Mar 2025
    • Smart Foundation for a Small Addition
    • A Kominka Comes West
    • Making Small Kitchens Work
  • Issue 328 - Dec/Jan 2024
    • How a Pro Replaces Columns
    • Passive House 3.0
    • Tool Test: Compact Line Lasers

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.

  • Home Group
  • Antique Trader
  • Arts & Crafts Homes
  • Bank Note Reporter
  • Cabin Life
  • Cuisine at Home
  • Fine Gardening
  • Fine Woodworking
  • Green Building Advisor
  • Garden Gate
  • Horticulture
  • Keep Craft Alive
  • Log Home Living
  • Military Trader/Vehicles
  • Numismatic News
  • Numismaster
  • Old Cars Weekly
  • Old House Journal
  • Period Homes
  • Popular Woodworking
  • Script
  • ShopNotes
  • Sports Collectors Digest
  • Threads
  • Timber Home Living
  • Traditional Building
  • Woodsmith
  • World Coin News
  • Writer's Digest
Active Interest Media logo
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

Enjoy unlimited access to Fine Homebuilding. Join Now

Already a member? Log in

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

Privacy Policy Update

We use cookies, pixels, script and other tracking technologies to analyze and improve our service, to improve and personalize content, and for advertising to you. We also share information about your use of our site with third-party social media, advertising and analytics partners. You can view our Privacy Policy here and our Terms of Use here.

Cookies

Analytics

These cookies help us track site metrics to improve our sites and provide a better user experience.

Advertising/Social Media

These cookies are used to serve advertisements aligned with your interests.

Essential

These cookies are required to provide basic functions like page navigation and access to secure areas of the website.

Delete My Data

Delete all cookies and associated data