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Discuss Re-Flueing Horizontal Flue to vertical on pitched roof in the Central Heating Forum area at

  1. Trac

    Trac Member


    I have had a bit of a nightmare on a WB boiler installation.

    Basically, it failed on Gas Safe inspection on 3 points.

    Installer came out to rectify months after and rectified the boiler regarding access points and flu. However, when we saw the flue, we were shocked. We had no idea it would protrude so much and looks very unsightly. It is a horizontal flue on a pitched roof.

    Basically don’t know what to do – we are not happy with the flue – but it meets requirements in terms of distance measurements. We are not happy with it though, visually it looks terrible.

    I was wondering, what are the option ref re-flueing.

    I believe a horizontal flue can be made vertical (so it would blend in a bit more and be aligned with chimney and not look so unsightly).

    I have no idea what this process involves.

    Property is flat in period conversion. Boiler was relocated to loft area from kitchen to make more space in kitchen. Installer said could de done and installed a year ago but it failed on GS inspection. Now rectified it looks so much worse from the outside.

    Really don’t know what to do and think only option is re-flueing and my own cost.

    Paid a lot of money for this already.

    Thank you!
  2. mache

    mache Active Member

    Pictures ??
  3. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Any chance of a few pics inside and out please
  4. Trac

    Trac Member

    thank you - I am reluctant to post pictures publicly so I shall see if I can send to you both privately
  5. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    You can email them me if you want
  6. Trac

    Trac Member

    thanks shaun - have emailed you picture
  7. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Received any chance of a few pics of the flue run internally and of the boiler please

    Will have a look at this tonight and post them up in the private section of the forum so the lads can have a look and give good advice

    If this is ok with you
    • Like Like x 1
  8. Trac

    Trac Member

    thanks Shaun - I shall send some soon
  9. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Not a problem, when you have time will do
  10. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

  11. king of pipes

    king of pipes Trusted Plumber GSR

    Why o why would you do that , i will not install a boiler in a loft period , its the coldest part of your home the harshest environment you cant see what its doing it will forever loose pressure condense can freeze up , a engineer will need access to it to many risks for my liking rather not do the job morning shaun . regards kop
    • Agree Agree x 1
  12. Darren Jackson

    Darren Jackson Plumber GSR

    I honestly can't think of what you can do other than moving the boiler. There is simply not enough height above the boiler to fit a roof terminal or enough room horizontally to fit a 90° flue elbow to take it vertical. It looks unsightly as it is but does meet the regs unfortunatly. And the blow off well I don't know what he was thinking. A true cowboy job I am afraid to say. Where has he terminated the condensate? I personally would simply never have installed it like it is now and I suspect neither would anyone else worth their salts. Sorry to put a downer on it but boiler relocation is the only solution I can think of. Oh and what has he hung the boiler on? It looks like a piece of chipboard or some other flamible sheet material.
    • Agree Agree x 1
  13. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    Your installer should have explained that due to the location of the boiler that there is not enough space above the boiler for a vertical flue kit. Personally I would have advised you to have left it in the kitchen. But that's just me.:p:p:D
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