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Central Heating Boiler Exhaust Pipe fitting

Discussion in 'Plumbing and Central Heating' started by DrWho, 12 Feb 2020.

  1. DrWho

    DrWho

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    Noticed this at one end of where the white pipe leads from boiler to vent outside, I'm concerned as I can actually see the silver wall insulation, there's a similar gap but not as big on the left side.

    Is it important that the gaps are sealed on the plasterboard? If so will normal filler be enough as I'm pretty sure it could fall down inside the wall.

    Image attached of pipe above the kitchen gas boiler.
     

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  3. DrWho

    DrWho

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    Perhaps it's left with a gap for safety reasons.
     
  4. ianmcd

    ianmcd

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    seal it with sand and cement
     
  5. 45yearsagasman

    45yearsagasman

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    ????
     
  6. Terrywookfit

    Terrywookfit

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    Yes it's an air gap to prevent the sand and cement catching fire !! :whistle::whistle:
     
  7. DrWho

    DrWho

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    should it be fully sealed?
     
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