Discovered damp patches on ceiling today and found that there was a huge amount of condensation around one of the two 25 gallon loft tanks (the one with the mains feed) which had gradually collected and wicked through the loft insulation. We had the loft re-insulated about 12 months ago and the company left the original tank jackets on and added another over the top with a new lid. It seems as though the condensation is collecting on the tank lid and then running between the two jackets - rather than dripping back into the tank - these are the all in one plastic/glasswool jackets. I guess this has been happening since the additional insulation was added.
My question is - should there only be one jacket? We've never had a freeze in 28 years. I've also removed insulation from under the tanks - I questioned this at the time but they (Miller Pattison) said it was normal to insulate underneath now with the extra tank insulation provided. Also does anyone know if the fitted lids for circular tanks allow any condensate to drip back into the tank although I doubt I'd get one to fit exactly considering the age of the tanks.( Loft is vented at both gable ends and eaves are clear of insulation.
Thanks
My question is - should there only be one jacket? We've never had a freeze in 28 years. I've also removed insulation from under the tanks - I questioned this at the time but they (Miller Pattison) said it was normal to insulate underneath now with the extra tank insulation provided. Also does anyone know if the fitted lids for circular tanks allow any condensate to drip back into the tank although I doubt I'd get one to fit exactly considering the age of the tanks.( Loft is vented at both gable ends and eaves are clear of insulation.
Thanks