Before i start, i am a diyer only...... not a pro, so please be gentle!! 
I'm installing a new bathroom.
The hot water cylinder is on the floor in the boiler room which is 600mm below the floor level of the bathroom.
To ensure the pipework fits in the studded wall i have had to use 15mm pipe.
All pipework is at floor level, except for the 2nd sink where it has to go over a door frame.
There are 2 sinks, toilet, bath & shower.
When testing the system before tiling etc, there was initially enough pressure in the 1st sink & shower, but mere dribbles in the 2nd & bath.
Then the pressure even dropped in the 1st sink.
This is for both cold & hot water.
I envisaged a problem with pressure but assumed i'd just add a pump if required, however i have no cold water tank! Only main feed.
A tank can be placed on the floor in the boiler room if need be, but no loft space etc.
Could there be a simple explanation for low pressure that i've missed, or is it a pump/tank job??
Any info/advice would be appreciated.......
I'm installing a new bathroom.
The hot water cylinder is on the floor in the boiler room which is 600mm below the floor level of the bathroom.
To ensure the pipework fits in the studded wall i have had to use 15mm pipe.
All pipework is at floor level, except for the 2nd sink where it has to go over a door frame.
There are 2 sinks, toilet, bath & shower.
When testing the system before tiling etc, there was initially enough pressure in the 1st sink & shower, but mere dribbles in the 2nd & bath.
Then the pressure even dropped in the 1st sink.
This is for both cold & hot water.
I envisaged a problem with pressure but assumed i'd just add a pump if required, however i have no cold water tank! Only main feed.
A tank can be placed on the floor in the boiler room if need be, but no loft space etc.
Could there be a simple explanation for low pressure that i've missed, or is it a pump/tank job??
Any info/advice would be appreciated.......
