She is co-founder of On Fiction Writing, a website for writers. This example is a 1930’s semi detached, the neighbour’s pots can be seen in the row behind. Very easy to install and can easily be removed if necessary. This serves to keep both debris and moisture out of your flue. The top of the chimney isn’t left out. Discussion in 'Builders' Talk' started by lionel hutz, Jul 4, 2008. lionel hutz New Member. Size:2200Watt perfect for demolition, Trenching, Chipping, breaking holes in concrete, block, Brick, Tile Stucco, Removing a foundation, concrete slab, oil chimney and much more! Can You Install a Wood Burning Stove If You Don't Have a Chimney? Thankfully the resources on the internet will be very beneficial in helping you get the job done. Remove the cap on the chimney. If you wish to temporarily seal up an unused chimney, there are effective ways to go about it. So now we have a gas balanced flue, going elsewhere, and a hole in the kitchen wall through to the chimney as well as an unused chimney. Can you buy any size-adjustable chimney blockers? This is followed by the cementing of masonry using special bricks known as air-flow bricks to aid with ventilation. This significantly increases the appeal of the fireplace. The quality of air is low which might impact negatively on health in the long run especially when there’s insufficient ventilation. 0800 246 1250. It is relatively simple to insulate a chimney to reduce heat loss now, but not eliminate the possibility of using it again in the future. Suitable for use with chimney liner. Measure all sides of the opening at the top of the chimney. In short YES, There are many factors to why you should cap off a unused chimney, but it has to be done properly and just not blocked off at the top of the stack. Do not attempt to use the chimney after it has been closed. Also, the sealing damper keeps out moisture from your chimney. What energy? Can you block up a chimney? Just make sure that it has a small vent, so air can pass through. Simply cut a tight fitting plug out of foam insulation and block the hole on the bottom. Your email address will not be published. Only one chimney is still in use for a multifuel burner, one was sealed many years ago while the other two have vents into the bedrooms where fireplaces used to exist. If you want to insulate your unused fireplace, rather than block it up and seal it permanently, use a chimney balloon or scrunched-up newspapers to insulate the fireplace effectively. Being unable to use a chimney may be due to multiple reasons. There is no need to remove the fireback from the fireplace, although if a back boiler is fitted, this should be removed once the plumbing has been isolated and disconnected. How to Block Off a Fireplace. External chimney pots – Here you can see how the chimney pots connect to their corresponding flues and in turn to the fireplaces. Keep the warmth in your home with a Chimney Sheep draught excluder. External chimney pots – Here you can see how the chimney pots connect to their corresponding flues and in turn to the fireplaces. If your chimney is open at the top but is not in use, rainwater can travel all the way down to the bottom of the chimney … The option you choose is entirely up to you. Providing the chimney is not being used for open fires or gas flues you can block up the opening providing you use bricks and cement and supply and fit an adequate size plaster/plastic louvred vent. The process involves cleaning out the chimney and fireplace first. Any of these methods will serve your needs. Blocking up an unused fireplace . If you wish to temporarily seal up an unused chimney, there are effective ways to go about it. Block chimney draughts. Not everyone wants to temporarily seal of their unused chimney and fireplace. Install a Chimney Cap The battle to keep moisture out of the chimney is the same whether it’s in use or not. Stovesonline Ltd Flightway, Dunkeswell Business Park Dunkeswell, Devon, EX14 4RD. Despite briefly explaining the process involved in permanently sealing an unused chimney and fireplace, you don’t need to be worried about every detail involved. Understanding these two terms is necessary for deciding on the appropriate actions and calculating costs. This allows for air to continue to slowly flow into the chimney so it does not become damp. Chimney caps protect the inside of your chimney and the inside of your home from weather damage and outdoor pests. This is because quite a lot of work is needed to make a fire, and maintain the general functionality of the chimney including the removal of creosote and soot among others. An unblocked open fireplace could be costing you hundreds of pounds each year. To block the mortar dust coming off your chimney wall, try this inexpensive solution: paint on a waterproofing product, such as clear Olympic Waterguard Multi-Surface Waterproofing Sealant. If you fall under this category, sealing your unused chimney may be your best bet. This can either be done permanently or partially depending on what works for you. Discussion in 'Home and Garden' started by Slime, 22 Nov 2013. If bits of brick have crumbled inside, or if there is significant decay, consider calling a professional to inspect the chimney and clean it out before you seal it. It absolutely will. Reduce energy bills and keep the heat in by blocking your unused chimneys. How to Block Cold Air From a Chimney. For some, a permanent block will be in order. Usually unused chimneys are capped off with a bent sheet metal covering and perhaps a wire strap or weight on the top. There are different approaches to doing this. We’ve seen that this process is either temporary or permanent. Unused chimneys not only waste a lot of heat, ... a good idea so that the chimney is still a ventilated space so consider leaving a small gap or hole somewhere when you block the chimney off. Made from concrete. When used daily as they are intended to be used, fireplaces can be efficient. It is assumed that you do not have plans of renovating or remodeling your chimney in the nearest future. This means that your chimney can let a lot of air in and out of your home. Each chimney cowl fits in the chimney a little bit differently, so be sure to follow the manufacturer's instructions. How to block disused chimney? Chimney caps protect the inside of your chimney and the inside of your home from weather damage and outdoor pests. Sealing up an unused brick fireplace chimney will save money on your heating bills and increase your comfort level at home.In addition to letting in … How to Block Cold Air From a Chimney. 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. There are different approaches to doing this. I need to block of 3 chimneys so my very agile cat won't climb up. You could go for an inflatable draught excluder, which will fit snugly inside your chimney. These include the use of an inflatable chimney pillow as well as installing a top sealing damper. fireplace plugs, pillows, flue blockers and draft stoppers) are an inexpensive way to choke off drafts when a fireplace is not in use. © Copyright 2020 Hearst Communications, Inc. We like to use the fire every now and then, but most of the time all the warm air escapes up it. One of them includes a chimney that has run out its course. Consider sealing it only at the top or the bottom. All of these reasons are valid and help determine the next line of action to take in sealing up the fireplace or chimney. An unblocked chimney can produce cold draughts blowing through your house during the winter. Chimneys used with open fireplaces are designed to extract air from the house, whether or not a fire is burning. Who you call for the job determines how well your unused chimney and fireplace is sealed or blocked. Block chimney draughts. It will need some ventilation. Usually unused chimneys are capped off with a bent sheet metal covering and perhaps a wire strap or weight on the top. These include the use of an inflatable chimney pillow as well as installing a top sealing damper. What’s the best way to block up our chimney during cold weather? Chimney balloons can be purchased from online retailers. A functional fireplace adds both visual and decorative warmth to a room, no matter how cold the air outdoors. Been up there several years now. Even new cast-iron dampers allow air loss. I have a 90 year old external brick chimney that has three separate flue passages. This requires taking a completely different approach. Chimney balloons are reusable and inflatable plastic pieces that fit inside your chimney to block any drafts. Blocking up an unused fireplace 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. $139.95. Place the foam up inside the chimney so that it fits tightly into place. They are also really simple to fit. Put on heavy work gloves, and use tin snips to cut a piece of sheet metal to the same measurements as the chimney opening. Draught-proofing your chimney is best done by installing a Chimney Draught Stopper into your fireplace. When the experts come around, questions are asked, an inspection is carried out and the most appropriate action is taken based on your needs and the situation at hand. Trim and drywall are added next followed by painting. Block unused chimney. When no longer in use, the open space will require some form of blocking to prevent the elements from taking their toll on it. The rain cannot get in, but it is not sealed air tight, which does allow any inside moisture to slowly get out. Removing an unused chimney. If you want it sealed temporarily, purchasing an inflatable chimney plug is your best option. Your email address will not be published. This is seen in the elaborate hearth and mantle designs. That is because a chimney needs some ventilation. Warning! Chimneys are major sources of energy loss as they drive up the cost of utility. And, it's shaped in a such a way that allows a little bit of air to escape so your home will stay well-ventilated. Most people prefer to hire a professional when capping their chimney, but you can technically install a cap on your own. Chimney problems sometimes become so frustrating that homeowners want more than to cap a chimney, they want the chimney removed, torn down or at the very least they ask us to seal a chimney off completely.. It’s often chimney leaks or unwanted cold air from the fireplace, otherwise known as a draft. You can cap your chimney or – if you use it occasionally – block the draught with an inflatable chimney … Any of these methods will serve your needs. Unused, though, they can waste a lot of heat up the chimney. The Insul-Plug is constructed of a ceramic based fireproof insulating material. ... - Get the chimney repointed and re-cap it with a better hood. I have got chimney cowls for the top, but don't know how to block them off at the bottom. Such modifications may have to do with the creation of storage space. This is absent in places or homes where fuel is burned in chimneys to produce heat. Features a hole in its center. Required fields are marked *. Stovesonline Ltd Flightway, Dunkeswell Business Park Dunkeswell, Devon, EX14 4RD. So, how should you maintain balance when sealing your chimney to prevent energy loss? I have a leak in my roof because of flashing that was badly installed by the previous owners of the home. The one I used claimed that a small gap was left to allow minimal ventilation. Sealing it completely may affect some form of ventilation. Is it acceptable to block off the top and bottom of an unused chimney in a new house without providing ventilation to the space? So, will it still allow the circulation of airflow? Unused chimneys usually aren’t ventilated properly, so moisture can easily get trapped inside with no way out. Unlike the inflatable chimney pillow which is placed at the chimney bottom, true to its name, the top sealing damper is designed to be placed at the top or above the chimney crown. Sealing up an unused brick fireplace chimney will save money on your heating bills and increase your comfort level at home.In addition to letting in cold, these chimneys pull hot air out of the house. Apply a bead of butyl rubber caulk around three sides of the chimney at the top, and set the cut piece of metal on the chimney so the edges line up with the caulk bead. Now, ventilation is necessary to allow for moisture escape. How To Temporarily Block An Unused Chimney. When it's time to use the chimney again, all you have to do is deflate the plug and pull it out. Use a utility knife to cut a piece of rigid foam insulation to these measurements. When implementing such modifications, however, it’s necessary to ensure you make provisions for ventilation as discussed earlier. If you continue to use this site we will assume that you are happy with it. Blocking the chimney frequently causes more issues than it solves. Hi, I used a 'chimney balloon' to block the chimney just above the fireplace, a small hand pump was used to inflate it. It is the portion which protrudes from the roof, ending in a cap. Save energy by sealing off an unused fireplace with insulation. The methodology and the sealant that you need to use for a concrete block chimney is slightly different from a mortar chimney. Full Service Chimney has helped over sixteen thousand chimneys to be loved again by their owners. Hi, Can anyone tell me the effect on a BER rating would be if I block three unused open chimneys and have 100% led lighting? The paint used must match the existing colors of your living space. Blocking up an unused fireplace . These include the use of an inflatable chimney pillow as well as installing a top sealing damper. They are easy to use, but only if you have access to the interior of your chimney. Even new cast-iron dampers allow air loss. Gagne and Son Concrete Block, Inc. - 8 in. The current BER result was E1 302.45 kWh/m/yr 6% low energy lighting. x 8 in. 0800 246 1250. More layers of bricks are added until the fireplace opening is shut or blocked off completely. When this is done, the air is still able to pass through the chimney. The fireplace flue can be a major source of energy loss. This ensures the zero accumulation of all sorts of debris. The primary reason for that is the fact that concrete block chimneys are by far the most porous and hence require extra protection. As people spend more of their time indoors, it becomes necessary to ensure that there’s enough supply of fresh air in the home. Personal Considerations None have been used in the nearly 30 years that I have been in the home but I am contemplating installing a wood burning stove in one of the fireplaces and using one of the flues. Sealing it airtight prevents household moisture from escaping and this can cause decay. You’ll need to get a trained professional who has experience in this area. There are a few products you can purchase to block the chimney just above the damper. thanks Press the metal into the caulk. The following information should help you comprehend better; This is also known as the chimney balloon and serves as a plug that fits into the chimney bottom. It is important to be extra careful in scouting for the right professionals. Replace the chimney cap and go inside the house. Operating a Chimney Damper Hire a professional to install a damper if you don’t have one. This means sealing the chimney at the top and the bottom. One of the decisions you’ll have to make at some point regarding your chimney is to either seal them temporarily or permanently. 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. We use cookies to ensure that we give you the best experience on our website. If you dont already have a cowel fit one on top of the the correct chimney stack. If you want to permanently block a chimney, the extreme solution would be to brick up the front of the fireplace or chimney breach, tear … This is one of the primary reasons for having a chimney and fireplace sealed. This won’t stop or prevent ventilation or airflow into your chimney. Includes: 1-1/8" Bull Point Chisel, 1-1/8" Flat Chisel. If you decide to reopen it, have a professional inspect the chimney before you use it again. You’ll find the perfect fit for your chimney. The goal of this metal cap is to prevent rain from coming in, but it shouldn’t be an airtight seal. It also prevents birds or other small animals from entering the chimney. Simply cut a tight fitting plug out of foam insulation and block the hole on the bottom. When a chimney and fireplace is out of service or retired, it will need to be sealed off. Apply a bead of butyl rubber caulk around three … Regards Watch and listen to Shell answer a question from one of his HouseSmart Club members who wants to know how to block off their unused chimney. It doesn’t matter the size of your chimney crown. Blocking an unused chimney. It is important however to maintain an equilibrium when sealing an unused chimney and fireplace. Chimney 34200 6 Inch Insul-plug Blocks Unused Thimble Holes In Masonry Chimneys 3.4 out of 5 stars 7. We're still open as usual with FREE delivery on all UK orders over £25 Shop Now. Block unused chimney. A contracter has advised us to have the two unused bedroom chimneys piped together via an inverted "Y" … Leaks and structural damage are the most common reasons for wanting to remove a chimney stack, and in such cases, you will have the option of simply covering over the rest of an unused chimney when you extend the roof over the gap left by the stack. One is an inflatable balloon-type product that will seal the flue. Treated energy from HVAC systems is bound to escape through the chimney or fireplace when it isn’t sealed. chimney flues. Chimney Balloons Chimney balloons (a.k.a. Chimneys designed to use wood as fuel can no longer be used. When moisture gets trapped due to the absence of ventilation, it adversely affects the chimney. Sealing an Air Leak Around a Chimney in the Attic, Ask Jon Eakes: Closing Down an Unused Chimney, Winnipeg Free Press: Seal Unused Chimney Top and Bottom. You can also seal the edges with foam weatherstripping tape, too. Luckily, there's a way to keep the cold downdraft out by installing a chimney balloon. There is a good bit of leaking around the chimney and I was thinking about just removing the chimney itself and putting in a regular roof section there. Plus it keeps the chimney as an asset to the home. 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. ... a good idea so that the chimney is still a ventilated space so consider leaving a small gap or hole somewhere when you block the chimney off. Ventilation needs to be provided to the chimney space to avoid moisture collecting on the soot and smoke deposits within the chimney and forming damp areas, this can easily be achieved by building in … hi i am after advice on the best way to block up a chimney that i have removed the old fire from so it is no longer needed. Unused, though, they can waste a lot of heat up the chimney. Blocking up an unused fireplace. The rain cannot get in, but it is not sealed air tight, which does allow any inside moisture to slowly get out. There are two major terms which will come up repeatedly in a chimney project. Another reason for being unable to use a chimney has to do with local ordinances prohibiting the use of wood as burning fuel for chimneys. Fit a chimney cowl to the chimney at the top. This means that your chimney can let a lot of air in and out of your home. This has to be systematic. Measure all sides of the chimney opening at the top of the fireplace, directly below the damper. Additional reasons include the extra work needed to keep a fireplace functional, being unable to use it, won’t depreciate the value of the property and the need for better indoor air quality. What should we do? In most cases, the need to seal a chimney will be due to it being underutilized or completely unused. There are a few products you can purchase to block the chimney just above the damper. The bottom is even easier. When used daily as they are intended to be used, fireplaces can be efficient. Chimney balloons come in lots of different sizes to ensure you get a snug fit within the chimney, helping to keep draughts at a minimum. Block up the chimney opening with brick or block but include a space for an airvent (plastic one is fine, easil obtainable from B+Q) 150mm from floor level to allow air to flow through the stack to avoid damp, then plaster. Chimney damp will often occur if your chimney is unused and boarded up. Capping a chimney has it’s benefits if your no longer going to use it, the main benefit is the thermal efficiency it will give your home. That way, the structure remains and gets sufficient ventilation while adding to your home’s feel and look. Just mentioning these chimney sealing methods won’t be enough without providing some form of information. A secure chimney cap must be installed to keep out debris and moisture. Is it acceptable to block off the top and bottom of an unused chimney in a new house without providing ventilation to the space? Sealing an unused chimney and fireplace is necessary as it helps keep it safe. BUT, I'm rubbish at DIY. Made of inflatable urethane or cut-to-size foam, they fit snugly up against your damper to lessen the chilling effect of a cold-air draft inside your home. Some of the value for sealing a chimney and fireplace is because it is unused, is retired, or gone out of service, being a huge source of energy loss and also being valuable despite being out of service. It is common for an unused chimney to be reused later on. If you're not going to use your fireplace again, or will not use it for a significant period of time, you should close the chimney to prevent air from escaping and to avoid moisture problems. It is relatively simple to insulate a chimney to reduce heat loss now, but not eliminate the possibility of using it again in the future. A contracter has advised us to have the two unused bedroom chimneys piped together via an inverted "Y" … Concrete Chimney Block - For use with 8 in. To block the mortar dust coming off your chimney wall, try this inexpensive solution: paint on a waterproofing product, such as clear Olympic Waterguard Multi-Surface Waterproofing Sealant. However, if you want to permanently close up your chimney, cutting out a foam insulation plug and placing it in the bottom of the chimney and caulking around it is the best method. A functional fireplace adds both visual and decorative warmth to a room, no matter how cold the air outdoors. While the idea of a fireplace is romantic, it might be a nuisance in practice. In some cases, it may involve capping a chimney off. Regardless of the motivation many homeowners often reach this conclusion. This way you (or the next owner) have the option to have it open or closed at will. Cooled or heated air from inside your home can escape through the chimney, causing your HVAC system to work harder. Capping an unused chimney/flue. However, this doesn’t apply all the time. One is an inflatable balloon-type product that will seal the flue. Never had a problem with it. In certain situations, there are no plans for future use of the chimney or fireplace. cleaning out the chimney and fireplace first, Chimney Flashing Sealant: Properties, Types & Brands. We’ve calculated that a chimney draught excluder can save you £17 per year – as well as 70kg of carbon dioxide emissions. If you want an easy way to temporarily block and unused fireplace flue to stop a draft, you should consider installing a top sealing damper. Chimney Balloon (plus inflation tube) Chimney Balloons are installed in the flue of rarely or unused fireplaces and prevent cold draughts entering your home and heat escaping through your fireplace. How To Temporarily Block An Unused Chimney. Since you will not routinely be utilizing the space, make sure it is free of any debris. Search (0) Home; Shop. Measuring 1000mm long x 300mm wide and 100mm thick, a Chimney Draught Stopper is easily trimmed to shape and be inserted into the throat of your chimney. Have the chimney properly swept, fit a chimney blank on the chimney pot. You may need to use a screwdriver to loosen screws holding it in place. Why Should Unused Chimneys Be Capped? Newspaper, straw or chimney balloons won't work because the cats will destroy them or pull them out, so I need another option. There are different approaches to doing this. This example is a 1930’s semi detached, the neighbour’s pots can be seen in the row behind. The black outside plate covers up to a 10" diameter hole. Any of these methods will serve your needs. These plugs easily fit inside the bottom of the flue and inflate to block any air from getting in or leaving the house. In other words, such a chimney isn’t functional any longer or has retired. You should not use celcon or thermalite blocks as the existing soot in the flue could pass through the block material leaving black stains on the finished plaster. It doesn’t matter if you only need to seal the chimney temporarily or permanently. Hi, Can anyone tell me the effect on a BER rating would be if I block three unused open chimneys and have 100% led lighting? x 8 in. For these unused chimneys, it’s better to have them sealed up at least until you’re able to come up with modifications for alternative fuel use. Can you block up a chimney? Once inflated, this apparatus will block cool air from coming down your chimney. The procedures involved can be overwhelming for some people. It is a medium density rubber foam that has been pre-cut to the general size of chimneys. Nothing else uses this chimney. What more? Before deciding on whether your chimney needs to be sealed temporarily or permanently, there have to be real reasons. Put on heavy work gloves, and use tin snips to cut a piece of sheet metal to the same measurements as the chimney opening. Only one chimney is still in use for a multifuel burner, one was sealed many years ago while the other two have vents into the bedrooms where fireplaces used to exist. Warning! Inflation tubes for easy install are included with all chimney balloon orders on purchase.ie orders and we won't be beaten on price anywhere. The current … Draught-proofing your chimney person to the fireplaces apply a bead of butyl rubber around! 2008, contributing to websites and the Sealant that you are ready to take in up! Inside with no way out procedures involved can be a nuisance in.! The same whether it ’ s insufficient ventilation chimney again, all you have to do with the of! Want it sealed temporarily or permanently, there 's a way to any... 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