Is your shower tray leaking? Watch this. I went to look at a shower tray leak today. It was the usual story, a leak around the tray. The water was pouring out. The householder had been trying to solve the problem for months. He had even renewed the grout and silicone on the bottom three courses of tiles and still the water poured out onto his lovely oak floor. For 15 years I was the DIY expert on a London Broadcasting show called The Fix-It Phone In, hosted by the talented Therese Birch, and we