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Cold water pipes sweating

Discussion in 'Plumbing and Central Heating' started by theprinceofdarkness, 19 Jul 2016.

  1. theprinceofdarkness


    25 Feb 2005
    Thanks Received:
    United Kingdom
    We have a large airing cupboard in a very old house. The airing cupboard has always smelt musty. I have been doing some plumbing in the cupboard and found that the cold feed pipes are sweating very heavily. I know that insulation will cure this BUT, there is a multitude of bends and Ts so I know I will never get the rigid foam tight enough to form a proper seal. I was wondering if a former (to hold it) and expanding foam could be the solution?
    The other solution I was wondering about was to vent the cupboard via a bit of 40mm waste to the fascia, just to stop the air being "dead".
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  3. frank.it's condensation not sweat.do not use foam.it looks terrible.ventilation is definitely the way to go.then go to the pub.
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