Rolyat combination tank with about 1m head compression

[joriginaloak]

I have just moved into a flat which after investigation the tank turns out to be a crappy rolyat tank which is in a service cupboard seperate to my flat and behind the bathroom party wall. I dont wish to change it as it offers me more than enough cheap hot water. I do tho have really crap water pressure and want to install a mixer shower. to do this i understand i will need a booster pump but do not know exactly which mixer pump is most cost effective and what type of pump is needed. Please could someone help with this query as i am desperate to get my bathroom sorted with a nice shower for the summer.
cheers in advance for any welcome comments!

 

[Slugbabydotcom]

Forget it and fit an electric shower. It is very highly likely that the header tank part of your unit will not handle the extra water requirement

 

[dexthird]

Short of replacing it with an unvented cylinder setup (which has its own assumptions of water pressure), think a decent electric shower fed off the mains supply is the way to go.