Lagging jacket for water boiler
 

Can anyone advise me of the cost? We've lived here for 5 years and never had one! Big oops!

If you have an old duvet use that to wrap around it we have one on our tank and it does the job grand

Lagging
 

Good idea, but only spare duvet is a Summer one. It's not so thick.

it should still do the job just tie it to secure it to your tank and it should make a difference in summer my water stays hot,ish for a couple of days at least.

you can buy one for under 15 euros. ones i've seen are mostly around 13. old pillows or cushions serve the purpose too.