Fitting sink in loft with low water pressure system.

Gary555 · Jul 8, 2020

Hi, I’m making a “man cave” in my loft and I’d like to fit a sink for making drinks and washing up etc. It’s a low pressure system with a header tank up high in the gable end and 2 water tanks on the deck. I know one feeds the hot water cylinder below and one feeds the cold water below.
I doubt a hot water supply would work without a pump so I was planning on using cold water supply only and using a water heater for hot water. Which pipe do I cut into to feed the sink? Do I take it off the header tank up high or take it off the cold water tank?
I haven’t figured waste pipe out yet, I was thinking to lead it to the soil pipe below the guttering...
All advice appreciated.
Thanks in advance.

king of pipes · Jul 8, 2020

Take it off the mains water supply that feeds the ball valves to the tanks, if drainage is a problem then maybe a waste water pump such as a saniflo may be the answer . Kop

Gary555 · Jul 9, 2020

Gary555 said:
Hi, I’m making a “man cave” in my loft and I’d like to fit a sink for making drinks and washing up etc. It’s a low pressure system with a header tank up high in the gable end and 2 water tanks on the deck. I know one feeds the hot water cylinder below and one feeds the cold water below.
I doubt a hot water supply would work without a pump so I was planning on using cold water supply only and using a water heater for hot water. Which pipe do I cut into to feed the sink? Do I take it off the header tank up high or take it off the cold water tank?
I haven’t figured waste pipe out yet,

king of pipes said:
Take it off the mains water supply that feeds the ball valves to the tanks, if drainage is a problem then maybe a waste water pump such as a saniflo may be the answer . Kop

Hi, thanks for the reply. So take a feed off the header tank or off the cold water tank on the floor?