Do I need to sweep unused chimeys?

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Was about to replace a firebrick from a decades disused fireplace, I regret removing the old one. Was wondeirng if any point in getting a sweep to clean it first, it's advised on all sweep websites when I googled. ;)

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  • FreeBear
    FreeBear Posts: 14,625 Forumite
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    edited 31 August 2023 at 9:56PM
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    Are you planning to reinstate and use this fireplace ?
    if so, then sweeping is a good idea as it ensures there are no blockages. Otherwise, not really much point.

    One point though - A stove is much more efficient than an open fire (70% or more from a stove, 15-30% from an open fire).
    Her courage will change the world.

    Treasure the moments that you have. Savour them for as long as you can for they will never come back again.
  • Slumbershade
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    Oh! No, definitely not. Thankyou.
  • stuart45
    stuart45 Posts: 3,989 Forumite
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    The only advantage of sweeping an unused flue, is that if there is any moisture getting into the chimney there is more chance of salts being taken through to the plaster. Normally, most people don't bother.
  • ThisIsWeird
    ThisIsWeird Posts: 4,844 Forumite
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    What level of ventilation are you giving it? 
    Fully open will mean superb room ventilation, and the heating of the seagulls whirling above your house. Zero will risk damp forming in the flue.
    How will you ensure a 'trickle'?
  • Slumbershade
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    What level of ventilation are you giving it? 
    Fully open will mean superb room ventilation, and the heating of the seagulls whirling above your house. Zero will risk damp forming in the flue.
    How will you ensure a 'trickle'?
    They were both fine for decades. well only change is that I removed one of the chimneys.
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