I am having a complete bathroom re designed and am having a wet room installed with a two headed shower, I have a normal boiler not combi and have a cold water tank in the loft. My plumber is telling me that I need to put another cold water tank in the loft along with my other tank because if I don't then I am being told that the tank will run dry within 10-15 minutes of use with the shower. I can't for the love of god understand what he means by this can anyone shed some light on it fit me before I hand over £150 for the new tank.
Thanks
Thanks