My old Galvanised water tank in my loft really needs replacing - is
there anything stopping me draining this down, putting some thick
chipboard on top and then placing a poly 50 gallon tank on top of it -
or should I consider ditching the galvanised tank as a matter of
If you aren't feeling the pinch at the moment, consider changing your hot
water system to being mains pressurised, so you don't even need the tank.
Obviously, this won't be the cheapest option, but will provide a better
system (assuming your mains supply is up to it).
As for putting the new tank on the old, I would doubt very much that the
tank could support that sort of weight. Most tanks rely on their contents to
maintain their stability. With the galvanised tank empty, I wouldn't be
surprised if the walls were likely to collapse.
In what way will it provide a better system? It might release space, but
this clearly isn't at a premium. And then you lose the benefit of near
constant water flow and, of course, a store in the event of a mains
*Filthy stinking rich -- well, two out of three ain't bad
Dave Plowman email@example.com London SW 12
It provides better flow and pressure (assuming the mains supply is good). I
can assure you that my parent's system was transformed when they replaced a
traditional gravity flow hot water system with a Megaflo.
I'd rather a flow rate that varies between 40-80 litres per minute rather
than provides a steady 15 litres per minute.
Unfortunately, that has been my experience with gravity storage systems. I
fixed a 25lpm flow rate problem in my last house with a pump. My parents
solved their 15lpm issue with the Megaflo. The problem is that the couple of
metres head that is typical with these systems can't squeeze enough water
through the convoluted pipe runs that are frequently involved. The pipes are
normally capable of doing the flow, provided they are pushed. That needs
good pressure, from a pump, or from the mains. A 50 gallon tank just above
the bathroom just doesn't cut it.
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