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chimney

A chimney is an architectural ventilation structure made of masonry, clay or metal that isolates hot toxic exhaust gases or smoke produced by a boiler, stove, furnace, incinerator or fireplace from human living areas. Chimneys are typically vertical, or as near as possible to vertical, to ensure that the gases flow smoothly, drawing air into the combustion in what is known as the stack, or chimney effect. The space inside a chimney is called the flue. Chimneys are adjacent to large industrial refineries, fossil fuel combustion facilities or part of buildings, steam locomotives and ships.
In the United States, the term smokestack industry refers to the environmental impacts of burning fossil fuels by industrial society including the electric industry during its earliest history. The term smokestack (colloquially, stack) is also used when referring to locomotive chimneys or ship chimneys, and the term funnel can also be used.The height of a chimney influences its ability to transfer flue gases to the external environment via stack effect. Additionally, the dispersion of pollutants at higher altitudes can reduce their impact on the immediate surroundings. The dispersion of pollutants over a greater area can reduce their concentrations and facilitate compliance with regulatory limits.

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  1. N

    Chimney Liners required?

    Good morning all, Just a quick one, ive recently been asked to fit a new fire in a property, there was one in previously but was removed simply because the customer no longer wanted it; however they have now changed their mind and i have not done very many fire installations in all my years of...
  2. E

    Can this Boiler Flue be reduced in size?

    Hello All, I was hoping you could help with a potential boiler build query for my father. He has recently had a new boiler installed via British Gas (valiant brand). The external boiler flue seems excessively tall, proving to be somewhat of an eye sore (please see pictures attached). I know it...
  3. G

    What type of flue liner do I need?

    Hi Guys, My chimney failed the test so I need to install a flue liner for my Gazco Stockton gas fire. It was over a year ago when the engineer condemned the chimney and I remember him also saying something about it needing some sort of box fitted into the fire recess but I can't remember the...
  4. MilkyBadger

    Why Does Vaillant EcoTec 832 Boiler Only Heat in Chimney Sweep Mode?

    Hello everyone, I'm facing an issue with my Vaillant EcoTec 832 boiler and would greatly appreciate your expert advice. The Problem: Heating Not Working Normally. When I turn on the heating, it doesn’t start. However, I still receive hot water, suggesting the boiler does work in some...
  5. K

    Worcester Bosch boiler not working for hot water

    My Worcester Bosch boiler works for the central heating system but doesn’t turn on for hot water. On the boiler the chimney sweeper icon is flashing and then 100. Not sure what this means or what I need to do? Can anyone advise as I’m clueless
  6. T

    ventilating chimney space around insulated liner

    Morning, I'm planning chimney maintenance work in July. Its a stone chimney, cement rendered above the roofline with wood burner and stainless lined flue installed 8/9 years ago. There is no ventilation of the space in the chimney around the liner. Is there any reason why I shouldn't put a...
  7. M

    Help. Vertical flue adjacent to chimney

    Hello Everyone Recently bereaved friend of mine is wanting to replace his 15 year old Combi. It is in the loft on the party wall of a semi ( pitched roof has three sloping sides). He asked his Gas Safe Service Engineer for a price to replace. Engineer said that existing vertical flue is too...
  8. 3

    Soil pipe in chimney breast

    We live in a Victorian apartment on 1st floor. Our new upstairs neighbours want to relocate their toilet from the outside wall to an inside wall and run the soil pipe through an unused chimney. Is that wise?
    • 309welman
    • Thread
    • america chimney pipe soil soil pipe usa
    • Replies: 12
    • Forum: USA
  9. PhilCSwift

    Best way to lay rad pipes through a wide chimney breast

    It's an old nunnery with massive breasts! 3 floors and basement. Chimney had 6 fireplaces feeding it. As I am 1st floor (English)/2nd floor (USA) I have a wide breast with 2 blocked off fireplaces. The firepace flues from below run up through and into the flat above and on through the loft to...
  10. P

    chimney leaks in rain, why?

    All the screws are sealed on the outside with silicone sealant. Also, a bead of silicone on top that support piece that twists around the pipe. Pipes are installed in proper direction, so its not leaking in the pipe assemble joints. Every pipe seam in the garage drips water when it rains. I...
  11. eagleeye

    Flue through chimney

    Can anyone tell me if fitting a new boiler flue through a chimney is OK or not. There is already a flue going through it but just need clarification. See attached. There is also a new roof been fitted over door which makes flue to close to returning wall / panelling. See attached too. Any...
  12. M

    Modifying a chimney cowell?

    hey folks. Is the above allowed or not? I’m thinking that by modifying it, it may become unfit for purpose? Cheers folks
  13. J

    Chimney Pots/gas terminals

    Hi All. Does anyone know of a 'one stop' source of information that details the requirements regarding chimney pots/gas terminals and their uses. For example, can clay chimney pots be used on gas fires. I know there is plenty of stuff on the web, but I can't seem to find one single source. There...
  14. T

    Gas fire , chimney liner query. Minimum 125mm/5” ?

    hello, I have a question regarding the minimum size of a chimney for a gas fire. The builder doing the house refurbishment has apparently got fires included in his gas safe, so they are undertaking the work. They are building a chimney breast from new, there are 2 basket gas fires rated at...
  15. Gazzt

    Russian chimney sweep new technology

  16. Scott_D

    Vert flue from a chimney stack

    I know I would need to check with MI's for boiler specific info - But can anyone tell me the standard measurement for a vert flue from a chimney stack? Is it 1500mm?
  17. A

    Gas fire chimney cap too small

    Hi, our builder recently fitted some clay drop-in chimney covers for our dripping chimneys and one of them was for a gas fire. The first two are regular 205mm ventilated caps but the spigot for the clay drop-in GC5 he used for the gas, in my option, is too small at just 170mm externally and...
  18. L

    Fitting waste pipe around chimney breasts

    We're trying to fit a bathroom in the top floor (front bedroom) of our victorian house. We have a problem in that the bathroom on the middle floor is located at the back, so we can't use the same soil pipe. Fitting a new soil pipe to the side of the house is near impossible because it would have...
  19. gas tec

    New Flue through a redundant chimney

    How do I stand with this? I have looked at a job (boiler change) where the existing boiler flue passes through an old chimney breast that is no longer being used. There will be no flue joints in the chimney but obviously no one will ever be able to inspect that section of flue passing through...
  20. C

    Re-Using Flue Liners for other appliances

    Can anyone confirm if chimney flexi flue liners can be used on different gas appliances? i.e remove the flue pipe from an open flued gas boiler and fit gas fire in its place, utilising the existing flexi flue liner and chimney pot? I know you cant use a gas flue liner for a solid wood...
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