Hi all, I have a specific problem with the hot tap in the sink in the bathroom which I hope someone may be able to help me with. The hot water pipes run from a combi boiler in the loft to the bathroom sink and then the bath. After the hot tap has been running on the bath, the first time the hot tap is used in the sink it splatters air out first. This is the only time it does it. The only way I have found to avoid it is if I open the sink tap at the same time as I open the bath tap and then switch it off afterwards. I'm not sure whether this is a fault with the tap or the pipework? Thanks in advance!