Permanently blocking an unlined chimney. 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. * Use a Furniture Dolly to move the wood stove out of the room. on Aug 14, 2009 . * Be sure to use proper care while Lifting Heavy Objects. If you're not going to use your fireplace again, or will not use it … 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. They don’t break down the way throat dampers do. I already have another fireplace downstairs in the living room and this one is just in the way. Permanently seal the Chimney; 1. Paint and decorate the room. Ask Question Asked 8 years, 1 month ago. Discussion in 'Building' started by onionsa, 1 Mar 2018. onionsa. A chimney damper is one of the various parts that make up a chimney. You can choose from several materials for a chimney cap. Can you close off a chimney completely? How do you permanently close a chimney? Joined: 28 Oct 2017 Messages: 172 Thanks Received: 0 Country: Hi all, just wanting to get a firm answer on whether or not you can completely seal an unused Chimney? Everyone likes to cozy up in front of a fireplace during the cold months. Professional inspection will check for creosote as well as blockage, damage and structural … Imagine how long your "pie-plate" seal will last at that temperature. I have a fireplace in my bedroom that I want to permanently close off and make into just a regular smooth wall. Top-Sealing Dampers Save Money. Although this method allows you to stay off the roof, it's dirtier and it's somewhat cumbersome to clean the flue from the bottom up. Now first off all, make sure you're safe and feel safe on a roof. Will the opening in the clay liner need something specific to close off and seal the hole, so exhaust gasses from my furnace/boiler, which is vented into this chimney, do no leak into the chimney walls, etc.? Step 2 – Purchase Your Flue Sealer or Flue Sealing Materials. Viewed 24k times 3. Try to remove as many parts of the stove as possible, e.g. Likewise, fit a bird and rain guard cowl on the chimney pot to allow free airflow. If it's clean, sweep up any debris that fell during off the cleaning process and you're done. The steps you need to take vary based on the type of chimney you have, so make sure that you select the right type of cap before proceeding. There are many times when a chimney may need to be capped, like to stop birds getting into the chimney pots, stop rain blowing down the flues, detecting and stopping chimney leaks, or to restrict heat loss from a redundant open flue. This will take 2 people, approximately 4 days, plus making good and plastering. I found this question which answers what to do with the chimney outside, but I am still unsure about this hole in my basement. How To Seal Off An Unused Fireplace Written by Doityourself Staff. So even if you close the damper it still doesn't do anything because most dampers are warped from the heat of the fireplace and it cost billions of dollars each year. How to cap a chimney off. 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. This type of work is best done by a professional unless you have a good head for heights! A chimney damper is located in the flue of the chimney and helps to control the chimney ventilation. If you have damp patches on the chimney breast , it will have to be re rendered with a waterproof render . How should I close off the 4" diameter opening into the chimney, into which my old eater's galvanized vent was installed? The oil furnace used the chimney to exhaust its combustion gases. Answered 20th Aug 2019 Like 3. Block up the opening in the chimney breast with concrete blocks or stud work and plasterboard. Could I fill them with loose insulation? Job Done. The damper has a chain that a user can use to open or close it. If you no longer have an active chimney then it’s a good idea to cap off the top, this may improve the thermal efficiency of the home and you won’t have to worry about birds getting into the stack. Unlike a traditional chimney damper, top-sealing dampers are constructed to form a tight seal. The cleaning of the fireplace and its floor needs to be wiped clean of any trim. Overall - Clean Your Own Chimney. If you are removing it completely, the roof will also need to be patched up. A metal chimney is much easier to remove than a masonry chimney. Chimney cleaning or chimney sweeping is a good idea at the start and the end of the season. How is this done properly? What To Do Next. Flue sealers can be found at chimney supply and masonry stores, and can be purchased from many online retailers. Make good flooring and wall, using appropriate materials, and plaster as necessary. When considering how to close off a chimney, or sweep a chimney remember any job done has potential to impact on the integrity of the property. If your chimney is unlined, you don’t have flue tile, so the above solution will not work. If you have a defunct or dormant fireplace or woodstove in your home, or a derelict chimney from a heating device that is already gone, you can make a bit more space in your home and reduce the chances of leakage in your roof by pulling out the chimney. Give us a ring on 020 8856 4341 and we’ll be happy have a friendly, no-obligation chat about your individual situation and advise you on what to do next. How to close off a chimney temporarily Last Updated: Saturday, September 5th, 2020, Created: Monday, December 31st, 2007 Jacqueline from Red Deer Alberta is trying to figure out how to close up her chimney between periods of using the fireplace, given that her damper is burned out and very difficult to replace. I now want to properly condemn the chimney. How to Permanently Seal Your Fireplace. Active 6 years, 2 months ago. The chimney flue pipe needs to be covered also. Once a chimney breast has been removed, you will need to make good the floor where the chimney breast once was. So what I've decided to do is seal mine off permanently and not ever use it again. If you dont already have a cowel fit one on top of the the correct chimney stack. Regular cleaning of a chimney can reduce the risk of a chimney fire, but even if you choose to clean the chimney yourself, you should also have the chimney inspected by a professional on a regular basis. Thanks for any help, Cheers, Bigwizz Bigwizzard, Nov 1, 2006 #1. nicknuv New Member. After the mortar has gone off and the brickwork is firm, carry out the plastering as detailed in our articles for ‘repairing plaster on masonry walls’ – don’t be in too much of a hurry to start plastering, if you start too soon the brickwork may not be firm enough and you could push over the wall you've built to close up the fireplace. There are several options for you to consider. Top-sealing dampers securely close off the top of your chimney flue, keeping hot air in and cold air out. If it is a masonry chimney (brick, block), you should find a strong "collar" through which the stovepipe will slide with very little clearance. Whilst writing this it's occured to me that the walls of the chimney will be the coldest in the rooms they pass thru, could this cause condensation problems, especially as one of the rooms is the ensuite. This is a very common condition and even removing the chimney doesn’t stop it because the back wall is also contaminated. I recently removed the old unused wood stove in my basement. 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. When the fireplace is off, however, you may experience the cold air coming through the chimney and stealing the warmth out of your home. By properly using a damper, covering the fireplace, or installing a chimney balloon, you can keep the heat in and the cold out! Consider a Top-Sealing Damper. Plasterboard the open ceiling and plaster skim to match the existing ceiling. Step 4 . Close the lower opening in the chimney flue so it’s sealed off from the ground floor. the door of the stove, which can be close to 40-50 lbs. To do that what I needed to do is get on my roof and take off my chimney cap. Remember you must have airflow i nto the stack so fit a vent as you close the opening. 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. Midwales Stoves. Chimney caps protect the inside of your chimney and the inside of your home from weather damage and outdoor pests. In addition to keeping moisture out of a chimney, chimney caps with mesh prevent animals from getting in and sparks from getting out. Last season I replaced my extremely old oil furnace with a high-efficiency propane furnace. Can I close off the chimney at the fireplace end? A fireplace damper, chimney damper, or “throat damper” is a metal plate located at the top of your chimney’s firebox. Cooled or heated air from inside your home can escape through the chimney, causing your HVAC system to work harder. Question: I'm looking for advice on how to cap off an unused chimney. Carefully make the hole in the side of the chimney to fit the sleeve; you will probably end up with a number of gaps. Learning how to clean your own chimney is … Oct 30, 2014 - How to Close an Unused Chimney. The fireplace flue can be a major source of energy loss. The solution is very similar, but your “pan” will cover the whole chimney top. Regardless of the motivation many homeowners often reach this conclusion. Feb 2, 2016 - When considering how to close off a chimney, or sweep a chimney remember any job done has potential to impact on the integrity of the property. Place the sleeve into the hole, and patch up the gaps as completely as possible with a strong mortar. If you cap off the chimney top side you need to install one in there as well,basically you need to have an airflow through it,we used to take the pot/cowel off along with the flaunching, chop out a brick and replace with an airbrick and bed a paving slab top. Most people prefer to hire a professional when capping their chimney, but you can technically install a cap on your own. The last step is where heavy lifting is required. When water is able to pour directly into your chimney, it will be almost impossible to avoid major repairs from the resulting damage. What materials should I use besides cement/mortar? This was a few years ago so it might not be the correct way now strappy, Jul 4, 2008 #2. nextlonestar New Member. How to properly close a chimney hole in the basement. For a more lasting seal, check out this DIY article on how to permanently seal an unused fireplace. Fit skirting boards. Its job is to seal off the firebox from the rest of the chimney, and can be opened or close with a lever. How to Close Off Fireplaces. All chimney flues must be ventilated top and bottom. This is technically a chase cover and not something you want to make at home. Inflatable sealers serve as chimney stoppers. Consider the fact that a proper masonry chimney is presumed to be able to safely endure extremely high temperatures for short intervals, e.g., a chimney fire lasting a few minutes at 1,800 degrees F, without necessarily burning down your house. The unused fireplace needs to be covered, which is initiated by cleaning the surface well. Wood-burning fireplaces were a standby in homes for centuries, only being phased out when heating technologies powered by electricity and oil were developed. I don't use it and I want to be able to put furniture against that wall. 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. One must not take chances with just any contractor. 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