You may recall I have been doing my neighbours en suite room. As part of the refit they wanted a new hose and sprayhead on the shower, which they supplied. The shower does not perform as good as it did before the refit. The shower valve was never removed or isolated so I do not think it is a water feed problem. The riser rail is more or less in the same place as before and the sprayhead is at the same height. The sprayhead is a little bigger than before maybe 20mm more diameter, unfortuneatly I do not have the old one available to do a before and after comparison! Any ideas as to the problem and solution?
Am I correct in thinking that head height of water is the distance between the bottom of the loft feed tank and the showerhead? In this case that distance is approx 1.4 metres. The hot water tank is in the airing cupboard directly behind the shower wall, although it has always been there so that shouldn't be a cause of the problem.