On Sep 25, 7:39 pm, "Man at B&Q" wrote:
On Sep 25, 1:35 am, Matty F wrote:

We tend not to have header tanks here. I've only ever seen one, and
only because I was fixing it after a tradesman had failed. I don't
understand the need for them, since there are better and cheaper ways
of getting the pressure right.

They're not about getting the pressure right.

What are they for? Breeding mosquitoes and cockroaches and rats?
Putting lots of weight on the ceiling so it collapses?