Another study estimated that the effective leakage area of closed dampers averaged about 30 square inches—equivalent to a square opening 5.5" x 5.5" in size allow continual flow of heated air to the outside. You’ll then be in a position to begin tackling the problem. However, it all depends on what you want. We have a gas fireplace that is rarely used and a standard chimney flue system on a house built in 1997. Spray foam insulation can be used under the roof and floor, or between the walls with ease. Installing wood stoves with existing fireplace chimneys: How to Find Qualified Green Building Professionals. Having an insulated chimney plays an important role in any chimney construction or modification. This is ugly, of course, but I … Learn how to seal your fireplace and save your hard-earned money! Vitoligno 300-C: compact, fully automatic wood pellet boiler for new constructi…, Fitting extra insulation to an older home when renovating can be a great idea, but when insulating exterior walls from the outside take care to do it right. 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. There are so many different options nowadays to cap off an unused chimney. 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. We have also come across people insulating their chimneys using tea towels and newspaper in the past – which again as flammable materials are a really bad idea. In addition to reducing draftiness, chimney pillows also: If you have a metal fireplace screen, you can buy a cover fitted with magnets that attach the cover to the metal screen. Usually unused chimneys are capped off with a bent sheet metal covering and perhaps a wire strap or weight on the top. EarSlaps Tue 17-Nov-15 18:59:50. Aug 24, 2015 - If you have one or more masonry fireplaces in your home, you can save big money on your heating bills by sealing them off when not in use. The best permanent solution would be to cap the chimney against rain and ventilate the fireplace, then to dry-line the exterior walls and fill the attic with glass wool. Unsealed fireplaces can really burn through your wallet. 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. After capping the chimney top, the next step is to look for a way of insulating its bottom. Plug the bottom opening with insulation as well, then seal it to prevent air leakage. 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 damper is near the firebox, you can use insulation to seal the chimney. Remember that if left unchecked, fires present great risks to your personal safety and your belongings. To do so, you simply have to remove the insulation plugs and have a new chimney stack inserted inside the brick fireplace. Get the Chimney Bottom Insulated. Sealing and insulating the clay flue at the top and bottom of the stack will ensure the job will yield these desired results. Whether you use a balloon-type seal or a rigid seal, be careful not to inadvertently light a fire in the sealed fireplace. Note: If you do not have a metal screen, you will have to improvise. Asked by Jim Simmons. 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. If you want to make it yourself without plywood, substitute sheet metal for the plywood following the instructions above. Even with the fireplace damper closed, there are air leaks around the edges of the damper. When it's time to use the chimney again, all you have to do is deflate the plug and pull it out. If you seal up more than one fireplace, you can save even more. The vermiculite will then absorb the moisture, and when you heat up your metal flue, steam may start burping vermiculite out of the top of your chimney (I've read of this, though don't know if it's true). minnow from Seattle on September 30, 2010: great hub! Latest Stories. Asked by Jim Simmons. Look up into the fireplace opening and note the shape of the opening just below the damper. As early versions o…. If your home has a folding attic stair, a whole house fan or AC Return, a fireplace or a clothes dryer, that may be just what is occurring in your home every day. Replace the damper. As the fire burns down and out, heated room air continues to be drawn up the chimney. Insulating your whole house professionally can seem expensive to some. At the moment we've got a nice new chimney pot on the top with one of those tops which vents the chimney and keeps the rain out. Choose carefully between Polyisocyanurate, EPS & XPS or Mineral Wool & Hemp as the wrong choice can reduce insulati…, Crawlspaces are becoming rare for new home construction in USA & Canada. Answer: I once had a propane gas log fireplace set connected to a propane tank outside the chimney. It should be installed just above the damper, or in the bottom of the smoke shelf. FAST & FREE. My question concerns the now unused chimney, which has been dripping condensation into my basement all winter. The one shown here is 12" x 12" (medium) and fits many chimney flues. A NOTE ON SEALING OFF THE CHIMNEY WITHOUT VENTILATION: If you just cap off the top and insulate the bottom, “pumping” will happen. This of course would need to be done by certified professionals, and only if the existing chimney is structurally solid. At the bottom, cut a hole into the insulation where the fireplace snout will connect to the rest of the fireplace, and secure this snout using a metal band. This way, hot air is blown back into the room rather than left to escape up the chimney. I think what you describe would actually lead to a colder bedroom wall. Fiberglass insulation is naturally fire-resistant. Search (0) Home; Shop . Heated air from the electric fireplace is circulated out into our family room keeping it warm and comfortable. 5. The first one ends in the ceiling space between the ground floor ceiling and the first floor floor. In the drop-down box, you should see "invert color." The properties of spray foam make it effective in tackling all most areas in a home. However there still is some drafts. If the fireplace is masonry and you're experiencing cold drafts, your flue liner is cracked and there is leakage through the brick in the chimney. After capping the chimney top, the next step is to look for a way of insulating its bottom. Save energy by sealing off an unused fireplace with insulation. 7 watching. The bottom ends are not sealed. Chimney C Caps are a plastic terracotta cap with an bird/insect guard that sits in side the cap. We like to use the fire every now and then, but most of the time all the warm air escapes up it. 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 … This will allow air to pass through the chimney and help prevent problems caused by moisture. You closed all windows and doors to make the system work better and save energy. My unused flues have a "bung" of glass fibre stuffed up them and pushed up to the level of the loft insulation (~ bedroom ceiling level). If your chimney top is higher than the top of your house (as it should be) the "neutral zone" is higher than the "neutral zone" in your house. The glass fibre will slow down the draft up the chimney but not seal it and the chimney breast will be within the thermal envelope of … Get the Chimney Bottom Insulated. If you do not want to purchase a fireplace sealer, you can make one yourself. How Do You Cap An Unused Chimney? The benefit of this draft-stopping method is that it's easy to install and uninstall, meaning that if you want to seal off a fireplace for the night (once the embers have died down, of course), you can do so in a flash and then take it off again just as easily to build a fire the next day. Rolls of foam insulation are cheap, says Brennand, and three rolls of … One of he best methods for closing up the bottom of the chimney depends on whether you want it sealed permanently or temporarily. Make any adjustments to your measurements so that it fits tightly in place. Not only will it save you from a steep expenditure on fuel and heating, but it also will probably save your life. Because we won’t use the fireplaces, we have two, I decided to seal both up with rigid foam insulation. 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. Finally, use the paint can tool, select black, and the rest of the background will change to black. What you want to do is essentially create ‘plugs’ of insulation (Rockwool is recommended) by compressing it and putting it into the opening, it will then expand slightly and fill the hole. For a professional look, do this: 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 it comes to the former, do use an inflatable plug, which in this case is done internally on the flue. We're still open as usual with FREE delivery on all UK orders over £25 Shop Now. xerxes, 15 Mar 2008 #2. When you go to bed at night, you should leave the damper open if there are embers remaining from the fire. If this is the case, consider installing an insulating liner in your chimney. Home / Blog / Chimney Insulation. Chimney C Caps are a plastic terracotta cap with an bird/insect guard that sits in side the cap. The chimney breast is both the most visible and vital portions of a 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. The bottom ends are not sealed. Mark D. Tyrol is a Professional Engineer specializing in cause and origin of construction defects. Newspaper insulation. Depending on your level of interest in DIY home improvement, you have two options: Here are three types of masonry fireplace draft sealers that you can buy through Amazon: Note: Chimney balloons go by many different names, including chimney pillow, fireplace pillow, fireplace blocker, flue blocker, draft stopper, and fireplace plug. Simply cut a tight fitting plug out of foam insulation and block the hole on the bottom. Last year we had our soild fuel boiler replaced by an electric boiler. Clean the fireplace grate and damper with a stiff brush to remove any ash, dust and soot deposits. This article offers a variety of methods for sealing your fireplace, as well as seven bonus tips about reducing fireplace draftiness. How can I do that in way where I may be able to use it again in the future if we need it? In between the higher and lower pressure zones, there is a "neutral" pressure zone. Apply rubber cement to label and affix to black metal portion fireplace. reduce droppings from potential chimney nest-makers. But there are still air leaks around ducts and cracks around windows. Cover the entire stack of bricks with a layer of rigid insulation (rockwool or expanded polystyrene) and half inch-thick plywood, which can then be covered to match the rest of the house. Answer this question. I've heard about cavity wall insulation but have been advised that this may lead to damp in my house. An error occurred. The rain cannot get in, but it is not sealed air tight, which does allow any inside moisture to slowly get out. The next time you want to use your fireplace, simply deflate and remove the pillow. I would recommend having a professional mason inspect for missing mortar and cracked liner. I need a bit of advice re the ventilation of unused chimneys. There's no need to fit this particular type. I turned the gas valve off and stuffed styrofoam up the chimney. You can add a bunched up ball of unfaced fiberglass insulation if you desire; it won't hurt but neither will it have any positive results. The reason for this is the "chimney" or "stack" effect. The glass fibre will slow down the draft up the chimney but not seal it and the chimney breast will be within the thermal envelope of the house. What's the best way to insulate an unused fireplace and chimney? Air from your room, already heated at some expense, is lost up the chimney in the draft. Whether to insulate it on a permanent or temporary basis. If you dont already have a cowel fit one on top of the the correct chimney stack. 37 sold. Click on that and the text will change to white on a black background. Stainless Steel Stove Pipe Cowl / Metal Chimney Cap / Flue Liner Pot. Spray Foam insulation. Have your assistant hold the bottom connector in position, while you apply caulk around the crown of the chimney. One of the best ways (in my opinion) is to use a Chimney C Cap. I never thought of sealing off our fireplace but I'll look into it for this winter, how to permanently seal an unused fireplace. This becomes particularly expensive when you have a strong wind blowing across the chimney providing an express route for your hot air to the sky. Our original and best-selling product, a Chimney Sheep® chimney draught excluder ensures your home is heated efficiently by keeping heat in and cold draughts out. I consider this setup effective and safe. However, it is often not difficult to insulate a liner (just adds cost) so it is up to you. You’ll also need to be sure that the room below the chimney is adequately ventilated. Once you've capped the top of the chimney, you will need to insulate the bottom of it. Near the top of the chimney, the pressure is higher, near the bottom it is lower, and in between is the "neutral" zone. If you have a chimney without a clay liner/damaged liner, then moisture can migrate through the brick into the flue area. After tieing the top of each plasticbag, I connected them all together with a string. The topic ‘insulating an unused chimney?’ is closed to new replies. Chimney Insulation. Warm air in your house rises drawing cold air inside through cracks around windows, doors, vents and other places. Have a nice day. You can add a bunched up ball of unfaced fiberglass insulation if you desire; it won't hurt but neither will it have any positive results. Reduce energy bills and keep the heat in by blocking your unused chimneys. Posted on 25th November 2012 by Sally Phillips. However, it is often not difficult to insulate a liner (just adds cost) so it is up to you. This difference causes an upward draft in the chimney, sucking warm room air around the edges of the closed flue damper. It is available in 100 sizes, so there's one to fit every type of fireplace opening. If you don't expect to be using your gas log set, I would recommend removing it as I did. The technician that fitted the electric boiler cut back the flue the the ceiling, filled part of the flue with insulation, and then applied cement to the underside to seal it. Ec…, When it comes to choosing a building envelope there are many variables to consider: what climate zone you're building in, performance, durability, health, comf…, Whether a house is worth rebuilding or is better torn down depends on a lot of factors, many of them personal, but also financial considerations like grants, s…, Condensation on windows is a pain in winter and runs down the wall can mean hidden issues in our homes - What causes fogged up windows, how big a problem is it…, Rigid foam insulation boards are different. £11.56 to £143.15. The main reason we propose exterior insulation would be to create an envelope around the chimney to eliminate any thermal bridging. Instead of insulating the exterior of the brick chimney, we were actually advised to fill the interior cavity with loose fill insulation. True, not insulating the exterior keeps the aesthetic the same, however, depending on how the chimney integrates with the wall of the house, I would be concerned that the stone or brick would still act as a thermal bridge. Install a heat-exchange system. Question What's the best way to insulate an unused fireplace and chimney? I’ve seen plastic balloons, umbrellas and chimney ‘sheep’ ... or we could use an old pillow Sat 3 Nov 2018 05.27 EDT First published on Sat 3 Nov 2018 03.00 EDT Share on Facebook What's the best way to insulate an unused fireplace and chimney? Home / Blog / Chimney Insulation. Dec 17, 2014 - Explore Tamara Verushka's board "Fireplace draft stopper" on Pinterest. Issue 134. The air between the liner and the chimney wall will insulate the liner (air is a good insulator) although the liner obviously touches a cold wall in many places. Frank . Vermiculite or Micafill: I … For more info: https://discover.hubpages.com/living/Replace-Propa... John Dove (author) on September 18, 2019: Thanks, Beverly for offering a decorative way to cover an old fireplace. I used a total of seven plastic bags, each filled with some insulation material. 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. Another effective fireplace draft stopper, the Large Fireplace Plug is a rectangular inflatable pillow (38" x 16") that is pressed up against the damper with an adjustable height pole to keep the pillow pressed tight. Now use the rectangular select tool and select the text you just created. See more ideas about fireplace draft stopper, draft stopper, fireplace cover. As such, it can be used to insulate a chimney. So in preperation for this winter I made a simple unused chimney insulation. If your damper is near the firebox, you can use insulation to seal the chimney. The chimney would then be benign thermal mass inside the building envelope, and maintain the same temperature as the rest of the conditioned space. I would probably frame around the existing fireplace in a manner that would allow a … Use a color printer to print this color picture. Keep the warmth in your home with a Chimney Sheep draught excluder. Posted on 25th November 2012 by Sally Phillips. If you keep the fireplace open then a register plate will be needed to retain the insulation in the flue. We have a gas fireplace that is rarely used and a standard chimney flue system on a house built in 1997. For a more lasting seal, check out this DIY article on how to permanently seal an unused fireplace. Answers . Do this from the top and then cover the opening with galvanized sheet metal to prevent water from infiltrating. One of the best ways (in my opinion) is to use a Chimney C Cap. Fiberglass will not burn, but it may melt if temperatures exceed 212 degrees Fahrenheit. This, along with the inside pressure differences, leads to your valuable cooled air escaping around the edges of your flue damper. Measure each side of the opening just below the damper seal and transfer the measurements to a pattern drawn on cardboard. How To Reduce Your Energy Bills / Energy Conservation Begins at Home. It is often installed in gaps around the chimney and flue to prevent airflow that can siphon the heat away from the interior of the building. This leads to a slight difference in air pressure between the higher and lower zones in your house. Spray foam insulation is one of the versatile and best materials to use when insulating your home. All the above advice is for redundant and disused chimneys. Fit the cap over the top of the place, and clamp into position. It's hot outside and you turn on your air conditioner. There are ways of extracting more heat from the flue when using a brick chimney but they do involve making absolutely sure the steel flue is gas tight and secure and it does need Rockwool insulation around the flue in that portion above the house walls and knocking out bricks on the inside. I really don’t understand why the issue of heat loss up chimneys is not more high profile. One study estimates that as many as 80% of American households inadvertently leave their flue damper open after the fire dies down. I removed it completely -- including the gas log set, the propane tank, and the connecting tubing. You may not be able to fill cavity walls with insulation but you may be able to cut down heat loss from your roof. These often overlooked sources of energy loss and air leakage can cause heat and AC to pour out and the outside air to rush in -- costing you higher energy bills. The air between the liner and the chimney wall will insulate the liner (air is a good insulator) although the liner obviously touches a cold wall in many places. Creosote buildup in your chimney can drastically reduce the efficiency of your fireplace. Next, I installed a flue sealer that I fabricated myself as I describe above. It is often installed in gaps around the chimney and flue to prevent airflow that can … 5. Whether to insulate it on a permanent or temporary basis. In the right hands, the treatment of chimney damp is quick and easy. Contrary to pre-fab fireplaces and chimney systems, masonry fireplaces are built on-site and are part of a home's structural design. At the moment we've got a nice new chimney pot on the top with one of those tops which vents the chimney and keeps the rain out. Does an Unused Chimney Need Ventilation? Fortunes are spent on loft and cavity wall insulation, double glazing and exterior cladding. Drafty Fireplace. Sealing off the fireplace fiberglass insulation (no vapor retardants) plywood; I would cut the fiberglass to the size of the plywood, then take a slightly larger piece of foil and wrap it around, then tack and tape it in place. Our plan is to remove an existing 4 pot chimney down to the bedroom roof joists. You should then secure th… You will also find information about why masonry fireplaces are so inefficient and just how much money might be going up your chimney. A contracter has advised us to have the two unused bedroom chimneys piped together via an inverted "Y" … Joined: 15 Mar 2008 Messages: 2 Thanks Received: 0 Location: North Dakota Country: Hello Xerxes, thank you for your reply. A retired chimney should be sealed only at the top or bottom. Fortunes are spent on loft and cavity wall insulation, double glazing and exterior cladding. Re: Chimney breast insulation « Reply #1 on: September 21, 2011, 01:33:17 PM » Be careful if you block both ends as it can cause condensation resulting in stains appearing on your walls, the usual advice is to maintain some ventillation in an unused chimney. The fireplace flue can be a major source of energy loss. But what can you do about the four largest “holes” in your home -- the folding attic stair, the whole house fan or AC return, the fireplace, and the clothes dryer? If the stone or brick is entirely insulated outside it will become part of the interior conditioned space, but if any of it is left exposed from the interior through to the exterior it will continue to conduct heat. While radiant heat from the fire emanates into your room and creates that feeling of warmth, heated air, pollutants and gasses from the burning fire rise up the chimney and into the atmosphere. Insulating unused chimney (10 Posts) Add message | Report. Holes hidden in attics, basements, and crawlspaces are much harder to locate and usually cause bigger problems. When it comes to the former, do use an inflatable plug, which in this case is done internally on the flue. I think it is a good idea to place a small label on the fireplace noting that it is sealed. In the heating season, with the flue damper closed, some of your valuable heated air is escaping up the chimney. February 2010. 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. Unfortunately, the breast has a habit of protruding into all the rooms it passes through. The rigid foam I used to seal the fireplace was an inch and a half thick, and I was able to buy it in 4′ x 2′ pieces for $4.15 each. This one from Amazon features a fire-resistant (not fireproof) Pavenex fabric cover. 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. 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. According to the U.S. Department of Energy, by sealing and weatherstripping fireplaces, a typical homeowner can reduce air leaks by up to 14% and save as much as $275 a year. The chimney balloon is an inflatable, balloon-type seal. I have an unused fireplace that feeds a lot of cold into the house so I would like to insulate and shut it. Answer this question. He developed several residential energy conservation products including an attic stair cover and an attic access door. The best solution is to seal the top of the chimney (to stop the rain) and to remove the chimney breast, the next best is to insulate the chimney, covering it with an inch or two of polystyrene. Rigid Foam Insulation I reckon this serves a similar purposes as the exterior insulation suggested in the previous post, but I see 2 advantages: -there is a bedroom located on the other side of the inner wall of the brick chimney. 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. Shieldmaster Twin Wall Insulated Flue Pipe + Chimney Accessories Stainless. Submitted by Harold Remlinge... on Tue, 01/11/2011 - 18:45. Discussion in 'Building' started by overlandrover, 14 Apr 2007. overlandrover. If you want it sealed temporarily, purchasing an inflatable chimney plug is your best option. Spring loaded legs are fitted securely to the base of the cap which allow the cap to be securely fitted to the chimney pot. A few years a go I saw something about device that you blow up to block your chimney. Question: I have a gas fireplace which I want to close off. But leaving the damper open when there are no embers left allows the heated air from your room to escape up the chimney. https://discover.hubpages.com/living/Replace-Propa... reduce noise coming through your chimney opening from outside. £9.99 to £23.99. Now you have two options: Use Text to type in Caution: Fireplace Sealed. Finally I I installed a Dimplex electric fireplace in the fireplace opening. Draught Exclusion & Insulation. Cut out the pattern and put it in place to see if it fits. No need to have airflow through an unused chimney. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters. 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Tyrol is a professional Engineer specializing in cause and origin of construction defects as many as 80 % American... As such, it can be a better choice as it absorbs moisture... About device that you blow up to you close off an unused fireplace and?. Think what you want vital portions of a home probably save your money! And then pull the connection band around the text will change to white on a house in. Boiler replaced by an electric boiler outside and you turn on your air.! The amount of other debris that might fall into your chimney lot depends on whether you use chimney... This winter I made a simple unused chimney it should be sealed only at the top and then the... Can use insulation to seal the edges of the versatile and best materials to use your fireplace simply... To fill the interior cavity with loose fill insulation I have attached to the top and bottom of fireplace., we have two, I bought an electric boiler the crown of the just. Way where I may be able to use when insulating your home guard that sits in the... Ducts and cracks around windows side of the chimney to eliminate any thermal bridging case insulate unused chimney consider installing an liner... Would be to create an envelope around the text any ash, dust and soot.... To cut down heat loss from your room, already heated at some expense, is lost up chimney! A color printer to print this color picture, but most of the background will to! To see if it fits tightly in place to see if it fits tightly in place moisture... Moisture can migrate through the chimney top, the treatment of chimney damp quick... Above the damper, or between the ground insulate unused chimney ceiling and the rest of the way... Will be needed to retain the insulation in the ceiling space between higher. I once had a propane gas log set, I would place this over the fire down... Cracks around windows improve the quality of home living the next step is to use it.. also glass. Adds cost ) so it is often installed in gaps around the liner, then seal it to air. To look for a more lasting seal, be careful not to inadvertently light a fire the. You have two options: use text to type in Caution: fireplace sealed allow a future to!, balloon-type seal stuffed some batting from insulation up into the room hard-earned!. To begin tackling the problem fireplaces are built on-site and are part of a chimney C cap by Remlinge! Fireplace opening and note the shape of the stack will ensure the job will yield these desired.! Label on the flue damper closed, there are so many different options nowadays to off. It 's hot outside and you turn on your air conditioner to reduce your energy insulate unused chimney and keep warmth. Again in the sealed fireplace the above advice is for redundant and disused chimneys before starting any.! A chimney a fire in the ceiling space between the higher and lower pressure,! Tool, select black, and only if the existing chimney is set-up.. also glass... A plastic terracotta cap with an bird/insect guard that sits in side the cap to be that! More lasting seal, check out this DIY article on how your chimney system work better and energy! What you want to use it again in the heating season, with the inside pressure,! Your personal safety and your belongings saw something about device that you blow up to you change. No need to have airflow through an unused chimney air is escaping up the.. Device that you blow up to you any fires out into our family room keeping warm...

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