Condensation inside loft cold water tank insulation All aspects of plumbing questions and answers, help, tips and information

[Craig_VC]

Hi All

Recently re-insulated the cold water tank in my loft and I've noticed the top layer of insulation has condensation on the underside of it. Is this an issue? I appreciate that it's above water, there's no lid to the tank, but wasn't sure if this might cause issues like mold over time?

Thanks in advance for your help.

[stoneyboy]

Hi craig_vc,
Your tank should have an impervious, reasonably air tight ridged lid on it. You’ll still get condensation even if you insulate the lid.
Regards S