Discussion in 'Building' started by overlandrover, 14 Apr 2007. overlandrover. – Carl Witthoft Jul 28 '16 at 12:24. It goes without saying, I hope, that gas or oil appliances cannot be vented into a flue which also vents a solid fuel appliance. 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. I am adding a half bath in the basement near the old chimney, can i use it for the bath fan exhaust? This then prevents cold air from being trapped in the chimney void as air is still allowed to flow through the chimney. This video shows the chimney removal of a small single skin chimney stack below roof level, and then tiled over to make good. How to Close an Unused Chimney. The bathroom fan is vented directly into the chimney shaft. What should I do with an unused chimney flue. A gas stove can be vented through an existing chimney, whether it is a manufactured or masonry chimney. You should cap any unused chimneys with a flue ventilator. The flue liner, chimney inner wall or vent inner wall shall be continuous and free of cracks, gaps, perforations, or other damage or deterioration that would allow the escape of combustion products, including gases, ... Unused openings in any venting system shall be closed or capped. 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). 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. There are two major terms which will come up repeatedly in a chimney project. 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. Let’s explore this idea. 12 September 2008 at 11:29AM edited 30 November -1 at 12:00AM in In my home (includes DIY) MoneySaving. I agree though, and don't want to install the fan. Part Number 550-110-272/0699 7 Direct vent Through-roof or Through-unused-chimney Installation Definitions This is a direct vent installation, which differs from the non-direct venting through-roof installation as shown in the Weil-McLain vent manufacturer ’s special gas vent system Vent and 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'm bricking up an unused fireplace in a house about 30 years old. Blocking up an unused fireplace . It is the portion which protrudes from the roof, ending in a cap. The chimney must be cleaned if previously used for venting solid fuel appliances or fireplaces. Dundas Jafine's magnetic vent covers are to be used in conjunction with metal air register vents and help to improve air distribution in your home by closing off registers in unused spaces. The flue piping of the system, whether for single or multiple appliances, should be as short a run as possible, and rise 1/4″ per running foot up and toward the chimney. 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. Types of chimney Wall head chimneys. Unused flues should be vented top and bottom to prevent damp. Any advice would be most appreciated. Boston’s Best Chimney is experienced in working with engineers, plumbers, and contractors to complete chimney venting projects properly. How should I close off the 4" diameter opening into the chimney, into which my old eater's galvanized vent was installed? A gas stove can be vented through an existing chimney, whether it is a manufactured or masonry chimney. It is also good for every kitchen to have a cooker hood venting fumes and moist air directly to the outside of the building. Last year we had our soild fuel boiler replaced by an electric boiler. Other than asking should unused chimneys be capped, fitting a vent is just as important. • The space between the vent pipe and the chimney must be closed with a weather-tight corrosion- resistant flashing. Is it venting the actual chimney stack? 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). You’ll notice that the chimney above your fireplace is either perfectly straight up and down or close to it. Flue ventilators can be found on our chimney pot page. Are there any issues I should be aware of? Closing of an unused chimney. Refer to Figure 2. The rain cannot get in, but it is not sealed air tight, which does allow any inside moisture to slowly get out. Understanding these two terms is necessary for deciding on the appropriate actions and calculating costs. Keywords: Condensation, Moisture, Chimney. • PVC must extend a minimum of 12” above the top of the chimney. 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. 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).. 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. Unused chimneys usually aren’t ventilated properly, so moisture can easily get trapped inside with no way out. The bottom is even easier. Leaving an unused chimney flue exposed invites moisture problems both inside and around the chimney. Chimney damp is a common and annoying problem. 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. Hi, It is important that unused chimneys are vented at both the top and the bottom, to allow a constant flow of air. Renovation & Design Seal unused chimney top and bottom B-vent simplest type of old vent for homeowner to deal with. Usually unused chimneys are capped off with a bent sheet metal covering and perhaps a wire strap or weight on the top. 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. 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. This is unlike all other venting in a house and it is because of the lint problem other posters have noted. The flue ventilator stops rain entry to the chimney but still allows a small amount of air passage for … The chimney currently has a water tank vent in it, but this will be removed and the opening user for the radon exhaust. 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. 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. The problems… Left uncapped, disused chimneys are exposed to the elements, air-borne debris and nesting birds and can be a major waste of … There was a plaster vent there anyway so the chimney looks to be disused. Was just hoping to get a reg number to back me up. Click here or call (781) 893-6611 to set up a free estimate. Part Number 550-110-272/0699 7 Direct vent Through-roof or Through-unused-chimney Installation Definitions This is a direct vent installation, which differs from the non-direct venting through-roof installation as shown in the Weil-McLain vent manufacturer ’s special gas vent system Vent and / boilers vent through an existing chimney, can i use it for the bath fan exhaust not work that! Has an unused chimney flue vent problems that are connected together posters have noted of damp building up becoming. Masonry chimneys if the furnace is removed from a common vent System with another atmospheric.! 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