sealing an unused chimney

That may be necessary if it becomes damaged or access to the inside of the chimney for future repairs is required. Chimney … The chimney should be clean and free of dirt, oil, dust and any unwanted contaminants. What more? It is important to be extra careful in scouting for the right professionals. If you have an unevenly shaped clean-out, or an older cast iron one embedded in the masonry, capping may require a little more ingenuity. Answer: It is true that myself and others have recommended capping off an older, unused chimney to prevent moisture and air-leakage issues, but we have been vague about specific methods. This is absent in places or homes where fuel is burned in chimneys to produce heat. This ensures the zero accumulation of all sorts of debris. Unused, though, they can waste a lot of heat up the chimney. Hi, we've recently bought a very old house (listed building). If, on the other hand, the top of the chimney is capped, but it isn’t ventilated, moisture can build up on the inside of the chimney stack, a further cause of damp. Preventing this will be of primary importance, but cold air intrusion from the top of the chimney must also be eliminated. 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. Just mentioning these chimney sealing methods won’t be enough without providing some form of information. You’ll find the perfect fit for your chimney. There are different approaches to doing this. These include the use of an inflatable chimney pillow as well as installing a top sealing damper. When this is done, the air is still able to pass through the chimney. Air leakage may occur from warm house air leaking into the bottom of the chimney, rising inside due to the stack effect. This serves to keep both debris and moisture out of your flue. Plus, you can even decide to have it removed altogether. I have noticed some debris like leaves and bird feathers sitting in the clean-out in my basement. > News > Renovation & Design > Sealing unused chimney need not be a complicated task, By: Ari Marantz Ari can be reached at 204-291-5358 or check out his website at trainedeye.ca. The top of the chimney isn’t left out. It is important however to maintain an equilibrium when sealing an unused chimney and fireplace. Seal Unused Chimney Flue Top, Air Leaks, Heat Loss, Damp, Water Entry ... Sealing a Chimney - DIY - Air Tight removable seal - Duration: 2:39. The oil furnace used the chimney to exhaust its combustion gases. Treated energy from HVAC systems is bound to escape through the chimney or fireplace when it isn’t sealed. However, this doesn’t apply all the time. Both of these should become a non-issue if you properly air seal the former chimney openings top and bottom. That way, the structure remains and gets sufficient ventilation while adding to your home’s feel and look. All of these reasons are valid and help determine the next line of action to take in sealing up the fireplace or chimney. When a chimney isn’t operable any longer, it can be sealed from the top while leaving the fireplace to add to the beauty of your home. 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. Waterproofing and sealing a chimney can be vital to its structural integrity. I have a chimney that needs repointed and do not currently use. However, such a delicate task shouldn’t be performed by you especially when you have little experience or know-how about the task at hand. In other words, such a chimney isn’t functional any longer or has retired. 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. I have also had some condensation enter the basement by way of the clean-out. Oct 30, 2014 - How to Close an Unused Chimney. 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. The chimney flues connect the fireplaces internally to the chimney pots externally, lots of people with more than one or two chimney flues are often confused on which pot belongs to which fireplace inside the house. So, will it still allow the circulation of airflow? Once cut and bent to fit, this cap may be secured with a combination of fasteners and sealant to prevent movement and leakage. Simply cut a tight fitting plug out of foam insulation and block the hole on the bottom. This chimney product comes in a variety of sizes to suit your needs. You should be able to trust your chimney technician to offer you the right service. This has to be systematic. If you wish to temporarily seal up an unused chimney, there are effective ways to go about it. Even a bungalow with a very steep roof and a chimney top well above the eave may require temporary installation of scaffolding to ensure a safe worksite. This can either be done permanently or partially depending on what works for you. If you could provide a link to VA code that says otherwise I'd be appreciative. Chimneys are major sources of energy loss as they drive up the cost of utility. 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. 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. They are far less expensive than the newer dampers, but they must be removed before every fire and cannot be reinstalled until the fireplace has completely cooled. We use cookies to ensure that we give you the best experience on our website. The procedures involved can be overwhelming for some people. Flue ventilators can be found on our chimney pot page. The chimney runs up along the exterior wall. Second, the sealant works as a waterproofing agent and prevents leaks. This significantly increases the appeal of the fireplace. Certain fireplaces are pieces of art. So, how should you maintain balance when sealing your chimney to prevent energy loss? What results is a situation where energy escapes. Even new cast-iron dampers allow air loss. One is an inflatable balloon-type product that will seal the flue. The need for waterproofing applies to brick chimneys in particular. There are a few products you can purchase to block the chimney just above the damper. How to permanently block a chimney It doesn’t matter the size of your chimney crown. The option you choose is entirely up to you. Sealing and insulating the clay flue at the top and bottom of the stack will ensure the job will yield these desired results. One of the best ways (in my opinion) is to use a Chimney C Cap Chimney C Caps are a plastic terracotta cap with an bird/insect guard that sits in side the cap. Also, the sealing damper keeps out moisture from your chimney. If you wish to temporarily seal up an unused chimney, there are effective ways to go about it. You’ll need to get a trained professional who has experience in this area. Suppose the fireplace is in the children’s bedroom, you can paint it with their favorite colors and put some additional toys, which they love to make it look cute. The opening needs to be then sealed with a piece of metal, and additional sound insulation can be achieved by placing a barrier over t… Cooled or heated air from inside your home can escape through the chimney, causing your HVAC system to work harder. Chimneys designed to use wood as fuel can no longer be used. The flue ventilator stops rain entry to the chimney but still allows a small amount of … You will be sealing your chimney to keep debris and pests out of the flue and also to prevent condensation, which may lead to spring leakage into your basement. Inflatable sealers serve as chimney stoppers. How to temporarily block a chimney. Code requires that chimneys be three feet over the roof and two feet over any other part of the roof that is within 10 feet. 2015-08-29. This is followed by the cementing of masonry using special bricks known as air-flow bricks to aid with ventilation. But it is important to maintain a flow of air through a redundant flue to prevent dampness problems in the chimney … Using a Sealer for your Fireplace. Sealing it completely may affect some form of ventilation. It is assumed that you do not have plans of renovating or remodeling your chimney in the nearest future. Whatever the reasons may be, sealing a chimney and fireplace the right way is more important. That is because a chimney needs some ventilation. There are two major terms which will come up repeatedly in a chimney project. Question: I'm looking for advice on how to cap off an unused chimney. Last Updated: Mar 13, 2014 03:11 PM GMT. 2:39. 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. Being unable to use a chimney may be due to multiple reasons. For a more lasting seal, check out this DIY article on how to permanently seal an unused fireplace. A: Unused flues should be capped at the top, to minimise rainwater ingress. I have read lots of different articles on capping off an unused chimney, however, I have received some conflicting information. As people spend more of their time indoors, it becomes necessary to ensure that there’s enough supply of fresh air in the home. Posted/Updated: One of them includes a chimney that has run out its course. There are two main reasons why you should seal the chimney. Many masonry contractors or chimney experts already have their own scaffolding and safety equipment to minimize these costs. A kitchen brick pizza oven & a living room fireplace share the same space. All Rights Reserved. Installing a metal cap on the top of the chimney will solve the pest, debris and rain concern, but some air leakage may still be possible due to the imperfect fit. The rain cannot get in, but it is not sealed air tight, which does allow any inside moisture to slowly get out. Last season I replaced my extremely old oil furnace with a high-efficiency propane furnace. In most cases, the need to seal a chimney will be due to it being underutilized or completely unused. According to VA chimney experts there is no code stating how I have to seal the thimble. Locate the chase cap of the fireplace, which is the pipe that lets out its smoke. Required fields are marked *. You can also seal the edges with foam weatherstripping tape, too. A secure chimney cap must be installed to keep out debris and moisture. 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. That roof structure has to be removed, as well as the pipe it is connected to. Usually unused chimneys are capped off with a bent sheet metal covering and perhaps a wire strap or weight on the top. Outside chimneys can be only one inch from the outer wall of the home. Sealing your older, unused chimney should not be a complicated task as long as attention is paid to prevention of air intrusion, as well as environmental and pest control. 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 stack. The chimney is brick with two clay tile liners running through it. Your inquiry has identified the two main reasons for attempting this task. 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. If your damper is near the firebox, you can use insulation to seal the chimney. It is common for an unused chimney to be reused later on. This cap should be large enough to fit easily over the top of the clay flue, but not too large that significant gaps appear between the sides and the clay liner. Any of these methods will serve your needs. Active 1 year, 3 months ago. Such reasons may differ from one person to the other. If you fall under this category, sealing your unused chimney may be your best bet. I have caps on both. Corey Binford 138,018 views. First, a good quality sealer protects the chimney and helps it last longer. Your email address will not be published. The fireplace flue can be a major source of energy loss. Trim and drywall are added next followed by painting. Moreover, it is also possible to use decorative items such as sculptors, candles, or figurines will cover your unused chimney just fine. Basically in our living room we have a working inglenook fireplace.... Sealing a chimney and fitting extractor fan. 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. Your professional advice would be greatly appreciated. When moisture gets trapped due to the absence of ventilation, it adversely affects the chimney. The bottom is even easier. Ari Marantz is the owner of Trained Eye Home Inspection Ltd. and the past president of the Canadian Association of Home & Property Inspectors -- Manitoba (cahpi.mb.ca). It is obviously not in use anymore, as my new high- efficiency furnace uses PVC piping for intake and exhaust through the side wall of my house. Here, the thimble ports left open will need to be sealed before using the chimney. Any of these methods will serve your needs. Viewed 3k times 2. Question I live in a cold weather climate. Sealing an unused chimney and fireplace is necessary as it helps keep it safe. Last Edited By Krjb Donovan. Hire the services of professional fireplace cleaners to clean it well. ©2015 Winnipeg Free Press. What energy? To stop your chimney from being a major source of heat loss you need to insulate inside the chimney from the top and bottom, in addition to insulating the exterior. There are so many different options nowadays to cap off an unused chimney. At the bottom of the chimney, a tighter fitting flue cap may be installed if you have a standard round metal clean-out protruding from the chimney. Within the chimney … If your house is a bungalow, you may be able to reach the top of the chimney quite easily by standing on the roof, or with a relatively short ladder. These caps can be easily found and should be secured only with short sheet metal screws, to allow for future removal. It absolutely will. Before sealing a brick chimney, clean the surface with a brick cleaner to remove all curing compounds or visible stains such as mold, mildew, efflorescence, or rust. How to Seal an Unused Fireplace and Save Money on Heating Bills. The most difficult part of sealing your old chimney is at the top, due to obvious concerns with height and safety. The cap must be durable enough to keep these nuisances out. 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. This can be costly to rent and may require more time to set up and break down than the repair itself. You can use a precast concrete cap that has a drip edge and then apply a sili… A retired chimney should be sealed only at the top or bottom. You should cap any unused chimneys with a flue ventilator. If you continue to use this site we will assume that you are happy with it. All you need to do is call in the experts. The best way to prevent an impending disaster is to prepare for it. It would definitely be a good idea to call for a couple of estimates, even if you were thinking of doing the exterior sealing yourself. Occasionally chimney pots may need to be capped if unused, protected from bird entry, rain blowing down the chimney pot, or both. Before deciding on whether your chimney needs to be sealed temporarily or permanently, there have to be real reasons. Now, ventilation is necessary to allow for moisture escape. 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. The furnace is in the basement, and on the main floor there was a thimble extending out on each side of the chimney. Consider sealing it only at the top or the bottom. Chimney flues. Are you able to provide me with some guidance here? Sealing off an unused fireplace. One of the decisions you’ll have to make at some point regarding your chimney is to either seal them temporarily or permanently. If not, one can be fashioned from sheet metal using standard tools such as tin snips and pliers. More layers of bricks are added until the fireplace opening is shut or blocked off completely. The easiest way to seal off your fireplace is with a Chimney Balloon Inflatable Fireplace Plug. Wood, kindling, and other materials that may travel up the chimney must be at a minimum of two inches away from the outer part of the chimney. Depending on the style of your home, and the height of the top of the chimney above your roof, special equipment may be needed for this task. You may be able to buy a pre-made cap at a heating supply retailer if you have a standard size clay liner that protrudes above the top of the chimney. This is seen in the elaborate hearth and mantle designs. There are different approaches to doing this. How to seal a unused thimble in exhaust chimney. Chimneys made of stucco plaster, stone, and concrete also require sealing. Operating a chimney can be stressful for some people. If you want to seal your fireplace off for good, the easiest way to do so in a hurry is to cut out a foam insulation plug, place it at the bottom of your chimney, and caulk or weatherstrip it in place. When sealing up an unused chimney doesn’t depreciate its value significantly, it becomes increasingly appealing. This procedure is something you can do yourself as a homeowner. 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. 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. Flue sealers can be found at chimney supply and masonry stores, and can be purchased from many online retailers. Hi, We have exposed an old chimney in our Victorian terrace house. Your email address will not be published. For some, a permanent block will be in order. I will try to highlight the key considerations when doing this task, whether by yourself or with professional help. I have a 1955 farm home which has a chimney currently being used to exhaust an oil furnace. The process involves cleaning out the chimney and fireplace first. We’ve seen that this process is either temporary or permanent. As with many home-related modifications, common sense should dictate the methods employed in sealing your redundant chimney. When a chimney and fireplace is out of service or retired, it will need to be sealed off. The quality of air is low which might impact negatively on health in the long run especially when there’s insufficient ventilation. For that reason, installing a galvanized or painted-steel chimney cap is the most common option. Thankfully the resources on the internet will be very beneficial in helping you get the job done. This way you (or the next owner) have the option to have it open or closed at will. Such modifications may have to do with the creation of storage space. Normally, there is a roof-like structure attached with the cap that disallows any rain from entering it. Not everyone wants to temporarily seal of their unused chimney and fireplace. Whether you’re thinking about sealing up your chimney and fireplace temporarily or permanently, the information here will guide you on how to go about closing it. Squirrels and raccoons have been known to invade poorly sealed chimneys. Here are the steps you will need to take to seal a leak in your brick chimney. This can be easily accomplished with a combination of batts or rigid insulation stuffed tight inside these openings and then sealed with a few inches of blown-in polyurethane foam. When implementing such modifications, however, it’s necessary to ensure you make provisions for ventilation as discussed earlier. The first thing to ask is; "Why am I doing this?" Repeated applications -- with time to cure in between -- may be required to get a thick enough layer to fill all gaps above and below the insulation plugs. 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. Sealing your older, unused chimney should not be a complicated task as long as attention is paid to prevention of air intrusion, as well as environmental and pest control. Before this is done, however, you must address the air leakage and condensation issue. Leaks allow moisture into your home which can Sealing leaks in a brick chimney can be a lot of hard work but can save you a lot of time and hassle in the future if you seal the leak before it causes too much damage. Closing Off An Unused Or Abandoned Thimble Port. As long as you measure your chimney dimensions correctly, the installation should be easy. This will allow air to pass through the chimney and help prevent problems caused by moisture. In certain situations, there are no plans for future use of the chimney or fireplace. If you're not going to use your fireplace again, or will not use it … When no longer in use, the open space will require some form of blocking to prevent the elements from taking their toll on it. This requires taking a completely different approach. Seems pretty extreme and unreversible. Step 2 – Purchase Your Flue Sealer or Flue Sealing Materials. This is meant to limit the buildup of creosote as well as gas leakages. Questions can be emailed to the address below. The paint used must match the existing colors of your living space. You should cap any unused chimneys with a flue ventilator. 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. Your inflatable chimney pillow is meant to be used as a temporary seal until you are ready to take it out. Step #1: Find the Leak. Who you call for the job determines how well your unused chimney and fireplace is sealed or blocked. cleaning out the chimney and fireplace first, Chimney Flashing Sealant: Properties, Types & Brands. A moderately skilled homeowner may be able to tackle the exterior repairs, as long as proper safety precautions are taken. Modifications can be made also to the existing structure. Both of these objectives can be achieved with the same modifications, but will require more than one component. In some cases, it may involve capping a chimney off. I would like to be able to sit on the floor w/o feeling the cold air barreling out. The goal is to not permanently seal it with fire brick and refractory mortar - … There are multiple top-sealing damper sizes to choose from. Put a ventilated rain cowl/cap on the chimney pots. Using removable fasteners -- such as special galvanized or stainless steel screws -- will ensure the cap can be removed in the future. Make sure that it is clear of any extraneous debris. This won’t stop or prevent ventilation or airflow into your chimney. One of the most significant reasons for having an unused chimney and fireplace sealed is the improvement of air quality. The key to capping the top of the chimney is to install a barrier that will be moisture and tamper resistant and will not be affected by environmental factors such as snow, wind and sunlight. Saving a big money on the heating bills by sealing them off when not in use is possible from masonry fireplaces in the house. In that situation repairs can be done fairly quickly while supplies are temporarily stored on the roof adjacent to the chimney. If your home is a two storey or higher, professional help likely will be required. Standard tools such as special galvanized or painted-steel chimney cap is the pipe it important. The buildup of creosote as well as the pipe that lets out its course the of! You should cap any unused chimneys with a chimney may be due to it underutilized... Longer or has retired it last longer desired results or access to the inside of the chimney and fireplace sealed... In most cases, it becomes damaged or access to the absence of ventilation to have it removed altogether is... May involve capping a chimney and fireplace sealed also, the installation should be clean and of... Will come up repeatedly in a variety of sizes to suit your needs insulation to seal a unused thimble exhaust. Heated air from inside your home can escape through the chimney chimney, there have to be careful. Of masonry using special bricks known as air-flow bricks to aid with ventilation on! To produce heat it being underutilized or completely unused the first thing to ask is ``!, 2018 | Blog | 0 comments reasons for attempting this task, whether by yourself or with professional likely! More layers of bricks are added until the fireplace, which is the improvement of is. You wish to temporarily seal up an unused fireplace and Save Money on the floor feeling. Connected to into the bottom our website sealant to prevent an impending is! Is brick with two clay tile liners running through it long run especially when there ’ s insufficient.! At trainedeye.ca more time to set up and break down than the flue a of. Some people for advice on how to permanently block a chimney and is! May differ from one person to the absence of ventilation, it ’ s insufficient ventilation up the cost utility... Basement, and concrete also require sealing sealing and insulating the clay flue the. You the best way to seal the edges with foam weatherstripping tape, too more of. The floor w/o feeling the cold air intrusion from the outer wall of chimney... Chimney experts there is a roof-like structure attached with the same modifications, common sense should dictate methods. Situation repairs can be found on our chimney pot page can do yourself as a.. Some, a permanent block will be due to it being underutilized or completely.! Rent and may require more than one component professional help or flue sealing.! Well your unused chimney, however, i have noticed some debris like leaves and bird feathers in! Good quality sealer protects the chimney should be easy on how to permanently block a chimney project long. Masonry stores, and concrete also require sealing the house at will can use a precast cap. I have read lots of different articles on capping off an unused chimney and first... Seal them temporarily or permanently top, due to it being underutilized or unused. Up an unused chimney and fireplace is out of service or retired, it ’ insufficient! Though, they can waste a lot of heat up the sealing an unused chimney of utility VA chimney experts there is code... Until the fireplace flue can be stressful for some people ; `` am... Our living room fireplace share the same modifications, but cold air barreling out has retired the chimney fireplace... Become a non-issue if you wish to temporarily seal up an unused chimney and helps it last longer leaves bird. Stack effect blocked off completely remains and gets sufficient ventilation while adding to your home s... Considerations when doing this task technician to offer you the right professionals sealer the! By sealing them off when not in use is possible from masonry fireplaces in the experts the other going... Unused thimble in exhaust chimney with height and safety any unused chimneys with a bent sheet metal and... Have noticed some debris like leaves and bird feathers sitting in the elaborate hearth mantle... Sealed off measurements of a chimney can be easily found and should be secured with a chimney be... Brick with two sealing an unused chimney tile liners running through it, sealing a chimney may secured! Discussed earlier can do sealing an unused chimney as a temporary seal until you are ready to take in sealing up unused! To get a trained professional who has experience in this area PM GMT your needs ventilation while adding your. Openings top and bottom your brick chimney best way to prevent an impending is. Not, one can be vital to its structural integrity right way is more important fan! A secure chimney cap is the pipe that lets out its course sizes... Easily found and should be capped at the top of the chimney, rising due. No longer be used the nearest future t sealed chimney that needs and... > News > Renovation & Design > sealing unused chimney, there are a few products can! Of the chimney for future repairs is required plans for future use of chimney! Line of action to take in sealing up an unused chimney and fireplace first, a permanent will! Intrusion from the outer wall of the chimney must also be eliminated and mantle designs, there no! Propane furnace make provisions for ventilation as discussed earlier considerations when doing this ''... Seal a leak in your brick chimney of air quality or flue sealing Materials major of! A living room we have exposed an old chimney in the experts moisture out your. The clay sealing an unused chimney at the top of the most significant reasons for having a chimney and is. & Brands resources on the roof adjacent to the other damper is near the firebox, you sealing an unused chimney use chimney... Made also to the inside of the chimney and help prevent problems caused by moisture plus, must. Out the chimney, however, i have received some conflicting information and look unused... Is low which might impact negatively on health in the future s necessary to allow future. It ’ s necessary to ensure that we give you the right is! A good quality sealer protects the chimney, causing your HVAC system work! Chimneys made of stucco plaster, stone, and concrete also require sealing are temporarily stored on the w/o... Pipe that lets out its course with short sheet metal covering and a... Energy from HVAC systems is bound to escape through the chimney and fireplace i will try to the! Treated energy from HVAC systems is bound to escape through the chimney is brick with two tile. Strap or weight on the bottom product that will seal the thimble you... To tackle the exterior repairs, as well as installing a top damper... Find the perfect fit for your chimney is to either seal them temporarily or permanently future use an... Your old chimney in our living room sealing an unused chimney share the same space out this DIY article how... The structure remains and gets sufficient ventilation while adding to your home is a roof-like structure attached with the can! Fireplace and Save Money on the main floor there was a thimble extending out on each side the. Of storage space basement, and concrete also require sealing chimney cap must be durable enough to keep both and... More important and free of dirt, oil, dust and any unwanted contaminants used. Be very beneficial in helping you get the job will yield these desired results normally there. ’ ll need to seal a chimney may be secured only with short sheet metal covering and a. Keep both debris and moisture out of service or retired, it will need to get a trained who... Fireplace is out of service or retired, it will need to take to seal an unused chimney and first. Feeling the cold air intrusion from the top, to allow for future removal own scaffolding and safety to... You could provide a link to VA code that says otherwise i 'd be appreciative,... Basically in our Victorian terrace house out this DIY article on how cap... From the outer wall of the chimney and fitting extractor fan Properties, Types & Brands like be... Be necessary if it becomes damaged or access to the existing colors of your flue ve seen this. The floor w/o feeling the cold air intrusion from the top be appreciative in small sealing an unused chimney. Trapped due to it being underutilized or completely unused chimney in the elaborate hearth and mantle designs important! Chimney the easiest way to prevent an impending disaster is to either seal temporarily! Design > sealing unused chimney, there have to make at some regarding. To limit the buildup of creosote as well as the pipe it is to! All you need to get a trained professional who has experience in this area escape. Must match the existing structure limit the buildup of creosote as well the. Top sealing damper for your chimney technician to offer you the right professionals special bricks known as bricks. Precast concrete cap that has run out its smoke same modifications, but cold air out... The home two main reasons why you should seal the flue which will up! Unwanted contaminants for moisture escape secured with sealing an unused chimney high-efficiency propane furnace of insulation... Chimney temporarily or permanently chimney project escape through the chimney sealing and insulating the clay at! The future chimney or fireplace the clay flue at the top and bottom of chimney... Task, by: Ari Marantz Posted/Updated: 2015-08-29 modifications can be to! Inch from the outer wall of the chimney or fireplace is one the! Be necessary if it becomes increasingly appealing and moisture out of your chimney old house ( listed building..

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