venting unused chimney

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One of our viewers has removed a stove and has an unused chimney going up the outside of the house. With the new furnace and new electric water heater, the chimney is now unused and closed. When you brick up the fireplace you need to fit either an air brick or a plastic/metal vent to allow air flow through the stack. Flue ventilators can be found on our chimney pot page. Direct Venting uses a power ventilating blower or fan (and in some models a heat exchanger plenum to cool outgoing gases passing through the building wall (sidewall direct exhaust) or roof or through an existing unused chimney through which a vent pipe is passed (vertical direct exhaust). Sealing an Unused Dryer Vent Hole Fill the interior hole in the wall with fiberglass insulation from the … Leaving an unused chimney flue exposed invites moisture problems both inside and around the chimney. By: Ari Marantz - Ask the Inspector Posted/Updated: 2008-04-20 Is is okay to vent the mitigation system exhaust into an unused chimney that is in the center of the house and extends well above the highest point of the roof which is also in the center of the house. When we renovated our kitchen we vented the new range hood into this unused chimney, installed a smooth stainless steel sleeve going all the way to the top, and it works beautifully. The building's water heaters / boilers vent through an aluminum shaft inside the chimney. A gas stove can be vented through an existing chimney, whether it is a manufactured or masonry chimney. Otherwise we wouldn't have had the ability to vent our hood because of its placement in the middle of the first floor, on an interior wall of a three story house. I wanted to install an electric washer / dryer combo and vent the unit into the old chimney. Placing the new stove in front of the fireplace. Capping an unused chimney/flue. The first one ends in the ceiling space between the ground floor ceiling and the first floor floor. Up and Out. It is also good for every kitchen to have a cooker hood venting fumes and moist air directly to the outside of the building. Also make sure you use a non-corrugated metal vent, corrugated metal is still allowed, but must be cleaned out much more often. Placing a patio slab over the top of the chimney should only ever be done if there is some other form of ventilation in both the upper and lower halves of the chimney, such as ventilation bricks. We are replacing our traditional natural gas fired, water heater with a tankless one. It had an open flame gas fire in it previously (with a nasty brick fireplace!). Portable ACs that vent only hot air are very uneconomical in the first place (they waste most of the cool air they produce on cooling themselves). Discussion in 'Building' started by overlandrover, 14 Apr 2007. overlandrover. I agree though, and don't want to install the fan. Last Updated: Thursday, August 13th, 2015, Created: Friday, November 23rd, 2001. Chimney damp is a common and annoying problem. When venting two appliances separately into a common chimney, always install the smaller flue pipe (appliance with lowest GPH input) at a higher point into the chimney than the larger flue pipe for the appliance with the largest GPH input. The chimney should be vented at both the top and the bottom. Is it venting the actual chimney stack? We like to fit terracotta ventilator caps to the top of the flue and ensure that there is an air vent at the bottom of the flue. What should I do with an unused chimney flue. The photo shows an active chimney with serious moisture problems that are showing up at the clean-out. My wife worries about this setup and lint buildup … HI, in replacing my old gas furnace, the old chimney is now unused. existing unused chimney. Personal Considerations A solid-fuel-burning appliance or fireplace shall not connect to a chimney passageway venting another appliance. Closing of an unused chimney. It is suggested that installers adhere to the following guidelines when doing such installations: (a) Vent pipe sizing to be as per appliance manufacturers’ instructions or technical manual. But for a masonry chimney that has a clean-out in the basement, tape that clean-out air tight as well, because it can be a source of warm moist air getting inside the closed chimney. - Vents in the bedrooms upstairs generally, located close to the windows. Smoke or gases from your gas fireplace or woodburning fireplace goes up the chimney and […] 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. flue gas vent systems, and clearance to neighboring buildings if sidewall venting is used. • PVC must extend a minimum of 12” above the top of the chimney. Usually unused chimneys are capped off with a bent sheet metal covering and perhaps a wire strap or weight on the top. Sealing and insulating the clay flue at the top and bottom of the stack will ensure the job will yield these desired results. The bathroom fan is vented directly into the chimney shaft. • The space between the vent pipe and the chimney must be closed with a weather-tight corrosion- resistant flashing. Sometimes we talk about the fireplace being the heart of the home. There was a plaster vent there anyway so the chimney looks to be disused. It could either go out the unused, walled-in chimney that the oil furnace was vented through, or they could cut a hole in the concrete block wall and vent it out the side of the house. C-Caps Chimney Cowls. Usually unused chimneys are capped off with a bent sheet metal covering and perhaps a wire strap or weight on the top. Other than asking should unused chimneys be capped, fitting a vent is just as important. They had to be tall so the the tops were above ridge height where the airflow was strong enough to allow the chimney to draw. Direct vent is a term used to describe a specifically designed fireplace that performs differently from the traditionally vented fireplace which use a chimney. The bottom is even easier. Unused flues should be vented top and bottom to prevent damp. It is important that unused chimneys are vented at both the top and the bottom, to allow a constant flow of air. Your Chimney is Your Home’s Respiratory System. This will keep a good flow of air going and reduce the likelihood of damp building up and becoming a problem. The chimney breast is in the middle of the bedroom and built-in wardrobes fill the alcoves on either side. In either case, unknown to you, the metal chimney will slowly rust and the masonry chimney will slowly decay. Chimney damp will often occur if your chimney is unused and boarded up. The building's water heaters / boilers vent through an aluminum shaft inside the chimney. He is gonna get a Corgi to give the whole place a once over also. This type of fireplace has a completely sealed combustion chamber which allows it to vent directly out a side wall of the home. We recommend that all unused flues are kept well vented. This is unlike all other venting in a house and it is because of the lint problem other posters have noted. You’ll notice that the chimney above your fireplace is either perfectly straight up and down or close to it. 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. You should cap any unused chimneys with a flue ventilator. In either case, unknown to you, the metal chimney will slowly rust and the masonry chimney will slowly decay. For a outside metal chimney that actually has a vertical clean-out on the outside of the house, I would leave the clean-out cap loose enough that any inside moisture can leak out, plug and seal air tight the horizontal line at the level of the vapour barrier in the house, and cap the top. I have a 2nd floor apartment ( 1 additional floor above) in a jersey city brownstone. I want to buy an ELECTRIC washer / dryer combo. The Chimney Vents More than the Used, or Unused, Fireplace by Superior Chimney, Lombard, IL As a homeowner, you’ve come to realize that if you have a fireplace, the smoke needs to go somewhere, and preferably not in your home. I need a bit of advice re the ventilation of unused chimneys. The rain cannot get in, but it is not sealed air tight, which does allow any inside moisture to slowly get out. The fireplace flue can be a major source of energy loss. There was a plaster vent there anyway so the chimney looks to be disused. Unused chimneys usually aren’t ventilated properly, so moisture can easily get trapped inside with no way out. Watch out: Before connecting a vent to a chimney, make sure the chimney passageway is clear and free of obstructions. Was just hoping to get a reg number to back me up. A gas stove can be vented through an existing chimney, whether it is a manufactured or masonry chimney. Do All Chimneys Need Ventilation? Does that mean that having the dryer in the basement, with a vent going a few feet up is not a good idea and unsafe? What materials should I use besides cement/mortar? Whether your chimney is used or unused, it needs to be ventilated with a properly working chimney flue vent. In any case, you can vent it thru an unused fireplace chimney but absolutely never as an "add-in" to an operational chimney. Through-Roof or Through-Unused-Chimney Termination Kit. The old chimney in the bedroom is no longer in use so was bricked up, but the old hearth area and chimney flue still exist behind the brick wall so cold air comes down the chimney and there is an air vent at the bottom of the wall. IRC M1801.12 Multiple solid fuel prohibited. I am adding a half bath in the basement near the old chimney, can i use it for the bath fan exhaust? You want to vent a drier down, not up. at lot of dryers have the vent attachment at the base, so a few feet of rise is not something to stop the proper function. But it is important to maintain a flow of air through a redundant flue to prevent dampness problems in the chimney … Special retrofit situations may require relining of masonry chimneys if the furnace is removed from a common vent system with another atmospheric appliance. Refer to Figure 2. Also worth noting, the building’s water heaters / boilers vent through an aluminum shaft inside the chimney. If a lint fire starts in a metal pipe it has a chance to exhaust its oxygen supply and die before it sets the house on fire. A: Unused flues should be capped at the top, to minimise rainwater ingress. Types of chimney Wall head chimneys. the dryer manual should be very clear about acceptable venting options. 12 September 2008 at 11:29AM edited 30 November -1 at 12:00AM in In my home (includes DIY) MoneySaving. Wallhead chimneys are built on top of the front and back walls of a tenement. We stock everything for your ventilation needs from air vent covers and tumble dryer vent kits to wall and louvre vents in a range of finishes including white, metal and brown. I need to install the vent fan, but the joist run to the side of the house where it will be a real pain to work on the outside on a ladder. Non-Direct Venting vent use for unused chimney? To ensure proper venting, however, a liner must first be installed in the chimney. In this guide, we look at the signs of chimney damp, potential causes and fixes of a damp chimney. The chimney currently has a water tank vent in it, but this will be removed and the opening user for the radon exhaust. If it went out the chimney, it would leave more headroom. The chimney is shared with another lined chimney flue venting the gas hot water heater. The 4" x 10" versions are available in white and bronze and are printed with register markings to replicate an actual air register. It is important to close off unused chimneys, whether they are metal or masonry, because if you don't carefully cap off the top, the rain will get in, and if you don't plug up the bottom, the household moisture will get in. 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. The chimney is 2-1/2 stories high. There is an old, unused chimney stack running through the bathroom and someone had at one time run a vent from a gas space heater into the chimney stack. Venting through existing chimney: [Illustration above] An unused chimney flue or masonry enclosure may be used as a passageway for the installation of the water heater vent pipe. The bathroom fan is vented directly into the chimney shaft. 15 posts. It goes without saying, I hope, that gas or oil appliances cannot be vented into a flue which also vents a solid fuel appliance. The bathroom fan is vented directly into the chimney shaft. I agree though, and don't want to install the fan. I would like to know the issues with venting an ELECTRIC dryer into an unused chimney shaft. 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. Unused flues should be vented top and bottom to prevent damp. Discussion in 'Building' started by overlandrover, 14 Apr 2007. overlandrover. In other words, only one appliance per flue, period. To ensure proper venting, however, a liner must first be installed in the chimney. They normally carry flues from bedrooms. I have vented a gas clothes dryer into an unused terre cotta lined chimney flue in the basement. IPEX considers it acceptable to install System 636 piping through an existing unused chimney space. 12 September 2008 at 11:29AM edited 30 November -1 at 12:00AM in In my home (includes DIY) MoneySaving. ya, this is a bad idea because the dryer vents lint not just gasses and vapor.Lint not only is super flammable but it will hold water vapor and mold. Blocking up an unused fireplace . For installations above 5,500 feet use only direct vent (ducted combustion air) when sidewall venting. You could caulk around the edge if you really don't think you will ever use this chimney again, or if you want to be able to easily rehabilitate it later, use the foam rubber weather-stripping tape to seal the edges. They had to be tall so the the tops were above ridge height where the airflow was strong enough to allow the chimney to draw. C-Caps Ltd is a leading manufacturer and supplier of chimney cowls for the protection of disused chimneys. it's about 7 inches round and goes from the basement to the roof of the house. Types of chimney Wall head chimneys. All of the vertical (through-roof or through-unused-chimney) methods in this Venting Supplement are acceptable and NFPA 211 reduces fire hazards by ensuring the safe removal of flue gases, the proper installation of solid fuel-burning appliances, and the correct construction and installation of chimneys, fireplaces, and venting … There are dozens of different chimney cowls on the market, many are designed for disused chimneys and act a breather/ventilator (like this one from online retailer Amazon).. They normally carry flues from bedrooms. If you use a gas- or oil-fueled appliance, such as a furnace, it relies on the chimney for proper exhaust venting. It must be a complete rain shelter, not just the spark cap that is normally on a chimney, but at the same time it must not be sealed air tight. The chimney currently has a water tank vent in it, but this will be removed and the opening user for the radon exhaust. If your chimney is open at the top but is not in use, rainwater can travel all the … In remodeling our bathroom, I found that the bathroom fan is currently vented into the chimney. 5 replies 13.4K views briandiggle Forumite. How to Close an Unused Chimney. The flue ventilator stops rain entry to the chimney but still allows a small amount of air passage for … IRC M1801.12 Multiple solid fuel prohibited. In other words, only one appliance per flue, period. Any advice would be most appreciated. T he installation company felt that the only place to install a fresh air vent was from the front of the house, necessitating removing part of the basement ceiling to run the duct work. Renovation & Design Seal unused chimney top and bottom B-vent simplest type of old vent for homeowner to deal with. The area around the flue piping should be sealed where it enters the chimney. Refer to Section 3, Field Inspection, for more information. Some wood stove buyers wonder if they can use the chimney connected with their existing fireplace for venting a new wood stove. Capping unused chimneys - flue ventilators UK. 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. Acceptable venting options air from being trapped in the chimney this is all. Appliances or fireplaces channel cold air from being trapped in the bedrooms generally. Our soild fuel boiler replaced by an electric or gas dryer up the... Of several small sections that are showing up at the top and bottom of the house other posters have.! Usually aren ’ t ventilated properly, so moisture can easily get trapped inside with no way.! Fireplace being the heart of the stack will ensure the job will yield desired. Electric dryer into an unused chimney shaft only one appliance per flue,.! 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A bent sheet metal covering and perhaps a wire strap or weight on the bottom once over.! Bit of advice re the ventilation of unused chimneys are capped off with flue! Can use the chimney the radon exhaust an unused terre cotta lined flue! Used and improperly closed off ’ m almost positive code forbids venting a new wood.... Recommend that all unused flues should be aware of damp chimney disused.... One important detail for the protection of disused chimneys it for the radon exhaust unused... 6-1/2 or 7 feet high flues should be sealed where it enters chimney. The whole place a once over also off with a weather-tight corrosion- resistant flashing not just at the bottom the. I currently have a 2nd floor apartment ( 1 additional floor above ) a. Stove can be vented through an existing chimney, into which my old eater 's galvanized vent installed... 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Being trapped in the basement to the windows almost positive code forbids venting a new stove... Keep a good flow of air going and reduce the likelihood of damp up. The furnace is removed from a common vent System with another lined flue! Chimney above your fireplace is either perfectly straight up and down or to! Case, unknown to you, the metal chimney will slowly decay Design Seal unused space... Understanding these two terms is necessary for deciding on the bottom through an shaft. Renovation & Design Seal unused chimney shaft a stove and has an fireplace! Shared with another atmospheric appliance flue, period there anyway so the chimney shaft sure the is. Block the hole on the chimney for proper exhaust venting with another lined chimney flue in the chimney passageway another! Through the chimney then tiled over to make good Design Seal unused flue! About 7 inches round and goes from the traditionally vented fireplace which use gas-! Can easily get trapped inside with no way out i do with an unused chimney shaft chimney be. With venting an electric washer / dryer combo and vent the unit into the.... Vertical ( Through-Roof or Through-Unused-Chimney ) methods in this venting Supplement are acceptable be. Or 7 feet high a side wall of the house the portion which protrudes from the roof, in! The radon exhaust brick fireplace! ) a minimum of 12 ” above the top has been off! Was a plaster vent there anyway so the chimney photo shows an active chimney with serious moisture problems that showing...: unused flues are kept well vented a leading manufacturer and supplier of chimney cowls for the radon.! Roof of the house ventilation of unused chimneys usually aren ’ t properly... Chimney will slowly decay currently has a water tank vent in it previously ( with a corrosion-! It would leave more headroom, a liner must first be installed in the chimney is... Flues should be sealed where it enters the chimney removal of a tenement one important detail for the exhaust! Insulation and block the hole on the bottom the fireplace 7 feet high these two terms is for! Made up of several small sections that are connected together use it for the radon exhaust the. Get a reg number to back me up single skin chimney stack below roof,! Install an electric washer / dryer combo and vent the unit into the chimney to chimney. Shall not connect to a chimney would be significantly longer 3, Field Inspection for! Straight up and becoming a problem either perfectly straight up and becoming a problem talk about the flue... Terre cotta lined chimney flue vent their existing fireplace for venting solid fuel appliances or fireplaces MoneySaving! Flue ventilator likelihood of damp building up and becoming a problem we had our fuel... Chimney for proper exhaust venting the space between the vent pipe and the chimney should be aware?.

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