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

Locktop Chimney Damper

TommH | Posted in Energy, Heating & Insulation on September 6, 2009 10:00am

Anyone have any experience with this product? It sits on top of the chimney and supposedly seals it tight when fireplace not in use. Operates with a chain that drops down into the firebox; when the chain is released, wire springs pop the top open. Saw it once on TOH and it may also have been featured in FHB. I need to do something, my very old traditional damper is totally shot and I need a bucket in the fireplace when it rains. I’ve even had a few bird invasions…pretty freaky to come home to!

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

Replies

  1. User avater
    McDesign | Sep 07, 2009 02:49am | #1

    I like these - I have twelve.

    Yes.

    No joke - I have an old house, and when we re-lined all the chimneys we put in these top-mounted dampers.

    Love 'em!

     

    Forrest

    <edit>  hey - if yer REALLY interested, I can get up on the flat part of the roof tomorrow, shinny up the slope, and get a pic - the easiest chimney to get to has four in a row, like little soldiers.



    Edited 9/6/2009 7:50 pm ET by McDesign

    1. TommH | Sep 07, 2009 03:36am | #2

      No, stay on the ground... I don't want you to kill yourself. One thing I wondered about, their website video shows it being installed only with silicone...no mechanical fasteners. How did you do the installation?  I would be worried about high winds,

      1. ThumbBanger | Sep 07, 2009 03:48am | #3

        Used one for about 20 years, fires every Sunday morning.  Worked ok, the chain broke once and had to be mended.  Easier to install than a new damper.

        1. snoofy | Sep 07, 2009 05:14am | #4

          Hi, ThumbBanger, there are several top damper out there but i noticed that you mentioned the " Lock top " that is a brand of stainless steel dampers that has two models, one without a screen around the damper unit that if left on the open position for a long time animals can still get in. The other model has a stainless steel cap and a stainless steel screen around so even if you leave it open, no animals can get in. The damper comes with a small tube of silicone adhesive sealant to fasten it on the clean edge of the terra cotta flue tile. The unit with the screen is the Lock top 2, and is easy to install as long as you can get to the top of the chimney safely. It comes all pre assembled with the cable attached to the unit, but don't unroll the cable until you are sure that it will reach near the floor of the fireplace firebox floor. If you need extra cable you should splice it before you install it. The cable is standard 30 ft. length. The instructions to attach the damper handle to the firebox wall is self indicative and easy to fallow. Be safe up there.!!! 

  2. Pelipeth | Sep 07, 2009 10:34pm | #5

    Ditto on the "They work great". Silicone has done the trick for me for the past l7yrs. Cable is SS. Even if I were building new I'd consider installing them as I believe the seal at the top is a better one than in the firebox.

    1. TommH | Sep 07, 2009 10:43pm | #6

      Thanks for all the replies. Now I have to crawl up and measure the flue size or maybe I should just hire a pro. Anyone work in Central Ct.?

      1. User avater
        FatRoman | Sep 08, 2009 03:27am | #7

        Hey Mr. Connecticut,You're wanted above.'Man who say it cannot be done should not interrupt man doing it' ~ Chinese proverb

        View Image

        1. User avater
          PaulBinCT | Sep 08, 2009 03:50am | #8

          LOL... thanks Steve... send the commission to the usual address?PaulB

          http://www.makeabettertomorrow.com

          http://www.finecontracting.com

      2. User avater
        PaulBinCT | Sep 08, 2009 03:51am | #9

        Might be something I can do for you Tomm... I'd have to have a look at the website myself as I've seen them but never installed one.  If you'd like to chat about it, feel free to shoot me an email.PaulB

        http://www.makeabettertomorrow.com

        http://www.finecontracting.com

  3. User avater
    Jeff_Clarke | Sep 12, 2009 07:57am | #10

    I think they look funny .... but they work just fine.

    Jeff

    1. TommH | Sep 12, 2009 05:11pm | #11

      Jeff, I assume you mean they look funny when they are open. One of the things I like is that when closed they are nearly invisable...or am I missing something?

      1. User avater
        Jeff_Clarke | Sep 12, 2009 05:17pm | #12

        As an architect I pay more attention to chimney tops than most - probably - so I *do* notice them both when open and closed.

        Jeff

        1. TommH | Sep 12, 2009 05:27pm | #13

          I agree, but I really need to do something. I was thinking that if I sprayed the stainless steel top a flat black that it might be less noticable in the closed position. Is there any other product that you would recommend?

          1. User avater
            Jeff_Clarke | Sep 12, 2009 05:33pm | #14

            This is the one (or similar) that one of the local guys uses -

            http://www.dynamitebuys.com/store/cart.php?m=product_detail&p=564

            It is designed to fit onto a TC flue liner though - not sure how the stainless would terminate (below it?)

             

            Jeff

          2. TommH | Sep 12, 2009 05:50pm | #15

            That was the other one I was considering,but it seems to have a higher profile that the locktop (when in the closed position). I didn't understand your last comment ...my chimney has clay flue tiles,Circa 1930...I just don't know the size . It's a center chimney so I have to climb up on the roof to measure and my balance ain't what it used to be.

          3. User avater
            Jeff_Clarke | Sep 12, 2009 05:57pm | #16

            Sorry, my bad.   Misread and thought you were doing a stainless steel liner.

            We have one 1932 fireplace with 10" round TC flues - burns like a blast furnace ;o)

            Jeff

          4. TommH | Sep 12, 2009 06:00pm | #17

            No, I was referring to the stainless top of the locktop gizmo...painting it black so it won't be gleaming in the sun.

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

Podcast Episode 692: Introduction to Trade Work, Embodied Carbon, and Envelope Improvements

Listeners write in about fostering trade work and proposed changes to Canadian code and ask questions about roof and wall insulation for an old house.

Featured Video

SawStop's Portable Tablesaw is Bigger and Better Than Before

The 10-in. Jobsite Saw PRO has a wider table, a new dust-control port, and a more versatile fence, along with the same reliable safety mechanism included in all SawStop tablesaws.

Related Stories

  • Podcast Episode 692: Introduction to Trade Work, Embodied Carbon, and Envelope Improvements
  • FHB Podcast Segment: Embodied Greenhouse Gas Emissions and the Building Codes
  • Old Boots Learn New Tricks
  • Install Denim Insulation Like a Pro

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 2025
    • 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