New flue new boiler

Discussion in 'Engineers' Talk' started by James Semaj, Mar 21, 2021.

  1. James Semaj

    James Semaj New Member

    If I knew that a new boiler comes with a new flue, I would probably think twice before replacing my old one.
    Could you please have a look at the pictures at tell me whether or not it's done correctly. Is the flue waterproof/watertight? I've indicated places on it which worry me most...
     

    Attached Files:

  2. Mike83

    Mike83 Screwfix Select

    Wouldn’t worry about the top 2 issues. That’s just the flue design.
    Not sure about the bottom issue though.
    That usually has a tapered out section that fits over the plastic shroud.
    Could probably give a better answer if we could see it from the side.
     
    James Semaj likes this.
  3. jonathanc

    jonathanc Screwfix Select

    Would you buy a new car and fit it to your old exhaust pipe? New boiler and new flue is obvious I would have thought.

    anyway I don’t think daylight should be visible through there. What make and model of boiler have you had?
     
    James Semaj likes this.
  4. James Semaj

    James Semaj New Member

    Ideal replaced with Worcester.
     
  5. Mike83

    Mike83 Screwfix Select

    They’ve maybe used the old flashing so it could be ill fitting.
    You can see daylight with some setups even when fitted correctly.
     
    James Semaj and jonathanc like this.
  6. jonathanc

    jonathanc Screwfix Select

    i think it needs a new flashing kit. No idea where there are a couple of bends in it either
     
    James Semaj likes this.
  7. Mike83

    Mike83 Screwfix Select

    41A413E6-4D38-4C8D-A830-BE911228E2D8.jpeg The flue is actually straight.
    The collar and flashing provide support.
    It just looks like a bend.
     
    James Semaj likes this.
  8. jonathanc

    jonathanc Screwfix Select

    Ok I stand corrected!
     
  9. Mike83

    Mike83 Screwfix Select

    Usually the flared out part (red arrow) should fit over the collar (blue arrow).
    3C59B270-32C0-4523-B47E-B71CE7622068.jpeg
     
    James Semaj likes this.
  10. James Semaj

    James Semaj New Member

    That's what I suspected. It looks like there is something missing or the top part doesn't go all the way in the bottom one. Which must've resulted in a gap (daylight can be seen from the inside). This was just filled with transparent silicone.... But I don't think it will last long.
    Just another job (not) well done. Why does it even surprise me....:(
     
    Last edited: Mar 21, 2021
  11. Mike83

    Mike83 Screwfix Select

    Maybe the flashing was suited to the ideal vertical flue and not the Worcester.
    Each manufacturer has their own version that works perfectly with their terminal.
    You also get standard flashings that work with most flues but something just doesn’t look right with that flue.
     
    James Semaj likes this.
  12. jonathanc

    jonathanc Screwfix Select

    Well clear silicone is a bodge. Get them back to do it right
     
    James Semaj likes this.
  13. James Semaj

    James Semaj New Member

    I just thought it's like replacing a gas fireplace, silly me...
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice