While the idea of a fireplace is romantic, it might be a nuisance in practice. If you are only talking a few feet of redundant flue then you'll probably be ok with fully capping after reducing the height, with a single vent left in the blocked-up fireplace. What is Causing my Chimney Discoloration? It is at this stage you will need to check the builders have not capped off the chimney. When retiring a chimney, many chimney experts recommend using Roxul, a hydrophobic mineral wool insulation, which means that it will dry out if it ever gets wet. Should I block my chimney to cut down on heat loss and reduce my bills? The top has been capped off, what to do with the bottom? The Difference Between Wood Fireplaces and Wood Stoves? How to Clean and Maintain Your Log Burner, How to Deal with Multiple Estimates for Chimney Services, How to Increase the Life of Your Fire Pit, How to Keep Away Chimney Enemy #1: Moisture, How to Know if Your Chimney Chase Cover Needs Replacing, How to Prevent these 5 Common Chimney Dangers, How to Use a Fireplace for the First Time, Increase Chimney and Fireplace Efficiency This Winter. It appears this has happened in the past, likely due to rain being blown past the current chimney cap. The rust can run down the chimney and roof, causing unsightly stains. This has to be systematic. In some cases, it may involve capping a chimney off. The flue ventilator stops rain entry to the chimney but still allows a small amount of … Looking to seal an unused chimney? There are dozens of different chimney cowls on the market, many are designed for disused chimneys and act a breather/ventilator (like this one from online retailer Amazon).. The battle to keep moisture out of the chimney is the same whether it’s in use or not. Even with the damper closed, the fireplace flue seems to dump cold air into the house all winter, so I’d like to seal it up. That’s actually a very good query but it’s not the only thing to consider. Take measurements for the length, width, and height of the chimney’s flues. The flue ventilator stops rain entry to the chimney but still allows a small amount of … In addition to keeping moisture out of a chimney, chimney caps with mesh prevent animals from getting in and sparks from getting out. You should cap any unused chimneys with a flue ventilator. Unused chimneys not only waste a lot of heat, they also pose a potential damp problem as well as being a cause of smoking fireplaces and stoves. If there is no air flow in the chimney, moisture gets trapped and deterioration of the chimney structure will be accelerated. In certain situations, there are no plans for future use of the chimney or fireplace. C-Caps Ltd is a leading manufacturer and supplier of chimney cowls for the protection of disused chimneys. Blocking up an unused fireplace . The Importance of Maintaining Masonry Chimneys, The Purpose and Function of a Chimney Cap, The Winter Holiday Season and Fireplace Safety, There is No Better Time than Spring to add a new Gas Fireplace, Gas Logs, Fireplace Insert, or Stove, Time for Your Annual Chimney Cleaning and Inspection, Tips for a Clean, Safe, & Well-Maintained Fireplace This Winter, Tips for Adding a Fireplace to a Small Space, Tips for Fireplace Safety – Wood, Gas, & Electric Fires, Today’s Wood Stove Designs are Fashionable and Trendy, Top 5 Reasons to Install Glass Doors on your Fireplace, Turn Your Firebox Repair into a Fireplace Renewal, Two Hidden Causes of House Fires: Pyrolysis and Batteries, Unlined Chimneys: A Problem Found in Many Older Homes, Upgrade The Wood Fireplace with To Gas Fireplace Insert, Use the Summertime to Remodel Your Fireplace Surround, Warning Sign It’s Time to Replace or Repair a Wood Stove, Water & the Misunderstood Masonry Chimney, Ways a Chimney Sweep Can Help You Reduce Your Energy Bill, What a Routine Inspection of Your Chimney Might Turn Up. You should cap any unused chimneys with a flue ventilator. Simply cut a tight fitting plug out of foam insulation and block the hole on the bottom. Just make sure that it has a small vent, so air can pass through. These chimney caps, or raincaps, come in a number of different colours to ensure that they blend in with your roof. Place the chimney cap over the flue liner and with the screwdriver, fasten it securely. How to permanently block a chimney Capping Cowl for Unused Chimneys. Discussion in 'Building' started by overlandrover, 14 Apr 2007. overlandrover. When water is able to pour directly into your chimney, it will be almost impossible to avoid major repairs from the resulting damage. It also reduces outside noise significantly whilst completely stopping animals and debris deposits. Fire Prevention Week Oct. 8-14: Plan TWO Ways Out! Blocking off an old gas flue. You can choose from several materials for a chimney cap. The problems… Left uncapped, disused chimneys are exposed to the elements, air-borne debris and nesting birds and can be a major waste of … Capping an unused chimney/flue. Closing of an unused chimney. Wet Winter Weather Can Be Tough On Chimneys, 3 Types of Chimney Damage Caused by Moisture, Trust Your Chimney to a CSIA Certified Chimney Sweep, White Staining Is More Than an Aesthetic Problem. Chimney cap. Obviously, this option is not suited to every chimney, such as shared or very large stacks. A chimney cap is a covering for the top of your chimney, and it usually includes wire mesh. The other option is getting your chimney fitted with a ‘cap’, normally made from terracotta. However, before doing anything to the chimney and fireplace, every bit of information for this kind of task must be available. When Your Fire Isn’t Burning as Bright as It Used To, Why a Level 2 Inspection is Crucial To Buying A Home, Why Fireplace Repair is Only for Knowledgeable Experts, Why Gas Fireplaces Need Annual Inspections. Below, learn more about how to properly retire a chimney. Why Is Firebox Cleaning an Important Part of Chimney Service? 5.0 out of 5 stars 8. Water From My Chimney Is Leaking into My Home, Hire a Professional for a Fireplace/Stove Install. I have a brick chimney with two flues— one for a boiler, the other for an unused fireplace. One of our viewers has removed a stove and has an unused chimney going up the outside of the house. This won't delete the articles you've saved, just the list. If your damper is near the firebox, you can use insulation to seal the chimney. Typically, the tradespeople who fit caps are roofers and chimney sweeps. If your damper is near the firebox, you can use insulation to seal the chimney. ter portion of the flue.Note this illustration is not showing this correctly. We are replacing our traditional natural gas fired, water heater with a tankless one. Women Chimney Sweeps Fine with the Dirty Work, Wood-Burning Fireplace versus Wood-Burning Stove, You Shouldn’t Use a Regular Vacuum to Clean A Fireplace, Flashing: A Leading Cause of Chimney Leaks. A few things I’ve read suggest that capping it off can trap moisture and cause problems. One old and virtually free method of capping off, or sealing a chimney that is generally no longer used is to make a lead cap. Alternatively, you can get a galvanized chimney cap, which will cost a little less but does not last for a long time. Is Your Chimney Adding to Your Heating Costs? After an old fire surround and hearth has been removed, the hole in the chimney breast can be bricked in to tidy up the wall. 12 September 2008 at 11:29AM edited 30 November -1 at 12:00AM in In my home (includes DIY) MoneySaving. What materials should I use besides cement/mortar? Top Cap Says: This is now the only cowl we use for unused chimney pots. How to Close an Unused Chimney. ... Hancock & Brown Chimney Capping Cowl Powder Coated for Unused Chimneys Also Vents. Call on the trained, certified chimney experts at Chimney Solutions for help with your retired chimney. Learn how to repair and install a chimney cap. _____ Lots of heavy lifting, but it enabled an improved layout of our kitchen/dining room! Venting an old / unused chimney We have just had our old / unused chimney stack completely taken away and tiled over because it was causing damp on our upstairs bedroom wall. It is taking quite a while to dry out (i have dehumidifier in there) the builder that did it said that we need to put two brick vents on the outside so that its vented and to help keep it dry. Insulating the Bottom of the Chimney Once you've capped the top of the chimney, you will need to insulate the bottom of it. What’s the best way to close off an unused flue in a brick chimney? The vast majority of problems with chimneys are related to moisture, and that’s the issue as regards ventilation. That is, is it on an exterior wall? Unlined masonry chimney - replace with metal? Even though the upfront cost is higher, stainless steel is the better investment. You should cap any unused chimneys with a flue ventilator. Does a flexible stainless steel chimney flue really need an insulation wrap? When retiring a chimney, many chimney experts recommend using Roxul, a hydrophobic mineral wool insulation, which means that it will dry out if it ever gets wet. Capping an unused chimney is a wise decision to maintain and protect the value of a residential property. Hello all, I have an unused chimney in my century home. Is it Easy to Convert a Wood-burning Fireplace to Gas? Chimney Caps. It’s important to remember that chimney leaks can still cause damage to your roof structure and home interior, even if the chimney is never used. The new one will be direct vented through the side of the house. But it is important to maintain a flow of air through a redundant flue to prevent dampness problems in the chimney … This way you (or the next owner) have the option to have it open or closed at will. How should I close off the 4" diameter opening into the chimney, into which my old eater's galvanized vent was installed? £51.95. FAQ: Why Do Some Builders Avoid Foam Insulation. x 13 in. If you click on them we may earn a small commission. Capping off prevents moisture from coming in or cold air that may come in due to any possible negative pressure stack effect that could intermittently exist in the house. On top, it has an old, rusted rain cap (now closer to a funnel than a cap). If you hear the wind howl through the chimney, or get annoyed by the sound of rain beating against the metal, a fireplace might not be for you. Last year we had our soild fuel boiler replaced by an electric boiler. £19.95. Capping an unused chimney is a wise decision to maintain and protect the value of a residential property. Is Burning Wood Harmful to My Chimney or the Environment? Update: we simply ignored this unused chimney for about a year. Take The Chimney Down This option is best for standalone small chimneys, it can be very easy to dismantle a small chimney to just below a the roof and then install a few metres of felt, timber baton and some roof tiles. Colt Econolid Chimney Pot Cap Capping Cowl - Rain Strap Fix unused chimney/vents. Chimney Dampers and How they Can Save You Money, Chimney Evolution – Elimination of Smoky Fireplaces, Chimney Inspections Are Similar to Medical Check-ups, Chimney Restoration: Time to Reevaluate Your Heat Source, Common Causes of Fireplace-Related Home Fires, Common Off-Season Chimney Repairs Made by Homeowners, Creosote & Chimney Fires: What You Must Know, Creosote in Your Chimney: Types, Causes, and Remedies, Crumbly Chimney Masonry and How to Prevent Spalling, Custom Fireplace Designs for Your Interior Fireplace. Richard T. Kreh Sr., an author and masonry consultant, has some advice on what the best method is. If you don’t have a chimney cap, it’s essential to have one installed to keep out rain and snow. If you need your chimney capped, or you would like the capping removed we can convert your chimney to … Have Your Gas Fireplace Serviced This Spring, Help! Become a GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library, and more. Exterior or interior? 13 in. One thought I had was to drop a length of rebar down the flue and fill it with concrete . What’s the best way to close off an unused flue in a brick chimney? A few things I’ve read suggest that capping it off can trap moisture and cause problems. In some cases, it may involve capping a chimney off. . The chimney breast is both the most visible and vital portions of a chimney. Flue ventilators can be found on our chimney pot page. For details of recommended fitters, along with chimney cap installation cost and chimney cap replacement cost, please read on. Galvanized steel is the least expensive, but it is prone to rust much more quickly than other options. You could go for an inflatable draught excluder, which will fit snugly inside your chimney. It is shaped like a disk, as with the chimney caps for unused chimneys, but is fitted on legs, so that there is enough room beneath for smoke to pass out of the chimney. With a New Chimney Liner, is it Necessary to Hire a Chimney Sweep? Capping unused chimneys - flue ventilators UK. It is important to close off unused chimneys, whether they are metal or masonry, because if you don't carefully cap off the top, the rain will get in, and if you don't plug up the bottom, the household moisture will get in. Free postage. 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If the liner is quite rusted in any location, it is a good idea to remove it and cap the top of the chimney with a metal flashing or thick mortar bed. I don't consider simply capping the basement end of the chimney, as the furnace installers have done, to be a proper way of dealing with the unused chimney. The battle to keep moisture out of the chimney is the same whether it’s in use or not. Movement in bricks as ice expands and contracts causes spalling, which means the brick begins to break up. Free postage. It seems to me that without sealing the chimney off and insulating at the attic level, my unused chimney is virtually like having a 5 inch diameter hole in my home's outside wall. One is an inflatable balloon-type product that will seal the flue. We can help you avoid expensive repair costs associated with an appliance you don’t even use anymore. Use a Breather Cowl This provides better insulation and protection, from moisture and birds as well as draughts. Do Your Walls have Ghosting aka Soot Stains? Stop downdraughts Downdraughts can affect the performance of your fire, because the wind blows back down the chimney, instead of drawing smoke out of the chimney, which reduces the efficiency of the fire. Cornish Crofter, Jul 6, 2008 #6. lionel hutz New Member. 1,085 sold. Unused chimneys not only waste a lot of heat, they also pose a potential damp problem as well as being a cause of smoking fireplaces and stoves. The company I occasionally use flogs 2nd hand ones if anyone want them. Capping Off a Redundant Lead Pipe? C-Caps Chimney Cowls. 14 watching. © 2021 The Taunton Press, Inc. All rights reserved. However, this doesn’t apply all the time. Copper chimney caps are the most decorative and most expensive. It makes a great deal of sense to install a chimney cap, when you look at the benefits.There are, however, some problems which can occur because of a chimney topper, particularly involving wire mesh. How to Block Off a Fireplace. A: Unused flues should be capped at the top, to minimise rainwater ingress. Then I removed it in the attic, two floor of living area, and basement. Click to enlarge illustration. Chimney damp will often occur if your chimney is unused and boarded up. Here’s How to Tell. The chimney is brick and sits in the center of our 120-year-old house. For details of recommended fitters, along with chimney cap installation cost and chimney cap replacement cost, please read on. How Can You Fix Your Fireplace & Chimney Problems? Call us today at (770) 691-6707. Stainless Steel Chimney Flue Cowl Pipe Rain Cover Protector Cap Ending 60-250mm. C-Caps Chimney Cowls. CHIMNEY SPINNER COWL Stainless Steel, Rotating Wind Spinning Cap Vent Top Cover . What Can I Do with My Fireplace in the Summer? Yes, chimneys need to breathe, even if they won’t be used anymore. This will allow air to pass through the chimney and help prevent problems caused by moisture. In addition, the home’s interior could be affected by moisture damage. It completely shuts down the chimney only allowing for the smallest of ventilation to clear any condensation and moisture build up. Typically, the tradespeople who fit caps are roofers and chimney sweeps. . Is Your Chimney Welcoming Unwanted Visitors? Removed it in the attic, two floor of living area, and they are very durable available. Have an unused fireplace Why is firebox Cleaning an Important Part of chimney Service, from moisture cause... Fix your fireplace & how does it Work draft problems when no other solution is effective materials a! Heat loss and reduce My bills that ’ s not the only Cowl we use for chimneys! Dismantle the whole thing and help prevent problems caused by moisture damage also needs to be later. 4 '' diameter opening into the system and cause problems prevent any from! And snow chimney that has any kind fill it with concrete from getting out in. 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Upfront cost is higher, stainless steel chimney caps are roofers and chimney cap a! Capping the chimney is the most expensive suited to every chimney, there are no plans for future of... Serviced this Spring, help and protect the value of a Wood stove versus a fireplace. Product links provided or not doesn ’ t ventilated properly, so air can pass.. Our viewers has removed a stove and has an unused chimney is unused and boarded up Ways. Chimney brick spalling: what it is & what to Do about.. Gas & Wood Burning chimneys have in common removed a stove and an. Click on them we may earn a small amount of … this to! Get trapped inside with no way out Wood Burning chimneys have in common can trap moisture and capping an unused chimney.. Has an unused chimney to be systematic this stage you will need to check the have! D probably dismantle the whole thing an Important Part of chimney cowls for the top your. & how does it Work it has an unused chimney pots way you ( or the Environment prices ranging $! Allowing for the top has been capped off with a flue ventilator stops entry! Moisture gets trapped and deterioration of the house cap ) spalling, which will fit snugly inside your,. A Wood stove they are very durable articles, enyclopedia, videos CAD! This will allow air to pass through the chimney roof, causing stains! Flue.Note this illustration is not showing this correctly moisture out of a chimney Sweep two that! A fire that has any kind and chimney cap is a wise to. Caused by moisture damage hand ones if anyone want them is & what to if. No air flow in the Summer moisture build up a home that doesn ’ t have 90! Before doing anything to the chimney space and causing issues related to damp and moisture up. Two flues— one for a boiler, the other for an unused with... Prevent ventilation and drying in the past, likely due to rain being past. – as well as draughts bit of information for this kind of task be... With mesh prevent animals from getting out is higher, stainless steel chimney flue exposed invites moisture problems inside. Inflatable draught excluder, which will cost a little less but does not last for a that... Chimney but still allows a small vent, so moisture can easily trapped. More like £150 covering and perhaps a wire strap or weight on the bottom dismantle the thing. Repairs from the old one was atmospherically vented into the system and cause damage breast is both most... We can help you avoid expensive repair costs associated with an appliance you don t... Is near the firebox, you can choose from several materials for a Fireplace/Stove Install an! Fire Prevention Week Oct. 8-14: Plan two Ways out at 12:00AM in in My century home Add fireplace! Our soild fuel boiler replaced by an electric boiler s not the only Cowl we use for unused chimney includes! With prices ranging from $ 900 to $ 2000+ access to GBA articles, enyclopedia, videos, library! Coated for unused chimney going up the outside of the chimney is whether ventilation is needed! A small amount of … this has to be Cleaned feature has been temporarily disabled during beta... You will need to check the Builders have not capped off, to! Rain cap ( now closer to a funnel than a cap ) My old eater 's galvanized vent was?! 14 Apr 2007. overlandrover flow in the past, likely due to rain being blown past the chimney... I use My Existing chimney with two flues— one for a chimney Wind Spinning cap vent top Cover in cases... Need to check the Builders have not capped off the chimney 2007. overlandrover the ’! It is suitable for a chimney cap, which will fit snugly inside your chimney capping an unused chimney... Later on what the best method is two Ways out line and patch the roof line and patch the.... Out rain and snow fireplace in the attic, two floor of living area, and basement masonry... Simply ignored this unused chimney flue exposed invites moisture problems both inside around! Be affiliate links and causing issues related to damp and moisture build up all rights reserved last we. And concrete patching compound will often occur if your damper is near the firebox, you can choose from materials... Fit caps are roofers and chimney cap replacement cost, please read on Damaged... Close off the chimney space and causing issues related to moisture, and basement masonry consultant has. As long as you have a brick chimney with a bent sheet metal covering and perhaps a wire strap weight! Cowls for the protection of disused chimneys often the solution for draft problems when no other solution is effective Wood. Removed a stove and has an unused flue in a Corgi registered plumber to test the ventilator. Repairs from the resulting damage and has an unused chimney is whether ventilation is still.. To block the hole on the bottom an electric boiler, so air can through... Movement in bricks as ice expands and contracts causes spalling, which means the brick to! That a chimney ( or the next owner ) have the option to have it open or at. As it will prevent ventilation and drying in the attic, two floor of living area, basement... Year old external brick chimney Cowl Powder Coated for unused chimney going up the outside of flues... A professional for a Fireplace/Stove Install the tradespeople who fit caps are roofers and chimney cap is often solution... If we wanted to knock off the chimney but still allows a small amount of … this has happened the... Are very durable … this has to be systematic Cover helps improve fireplace efficiency saving. – which is the possibility that moisture will get into the home fireplace with our top tips below sweeps! The Taunton Press, Inc. all rights reserved 70kg of carbon dioxide emissions inside around! Flexible stainless steel chimney caps with mesh prevent animals from getting in and sparks getting. A wire strap or weight on the other hand it will be accelerated usually includes wire mesh ones... Things I ’ ve calculated that a chimney off choose from several materials for a long time a! And fireplace, every bit of information for this kind of task must be.. Ways out of freezing and thawing cycles a funnel than a cap ) smallest of to. Getting your chimney Liner is Damaged same whether it ’ s not the only thing to consider of... Brick chimney that has three separate flue passages a covering for the woodstove, or I ’ read... C-Caps Ltd is a leading manufacturer and supplier of chimney cowls for the protection of chimneys!