Hello. I would greatly appreciate some unbiased advice about a leak at my home. 3 years ago I had the house replumbed during a renovation and extension project on a fixed price contract for work and materials. This included installing an unvented hot water cylinder. We have always had to top up the pressure in the system - just a little every few months which we were advised to expect but recently we had rapid pressure loss so we looked for a leak. We found the leak which was from a push fit cap on an unused hot water pipe mistakenly installed (We had never intended a towel rail in the downstairs toilet room and it wasn't in the scope of work). The pipe and push fit cap was concealed behind a wall in our utility. The leak caused significant damage and we have had to rip out our utility room to access it and repair the walls. Please can you tell me if you believe the plumber who installed the system should meet the cost of accessing and repairing the damage caused by the leak and reinstating the utility. Is it normal/ good practice to terminate a pipe within a wall so that it cannot be accessed? Many thanks for reading this and if you have any advice I would appreciate it.