I have an apartment that is just over a year old. Recently had a problem whereby pipe under sink came away causing a lot of damage and the wooden floor will need to be replaced.I had a plumber out that said the pipe was never properly welded and as such is building defect. The management company had said to me builders would cover if it was proved to be defect and i got a report and pictures to back it up . It seems they are now trying to go back on this saying that its outside the 12 month warranty period and that there is no proof that it wasnt welded correctly ,even though i have an independent plumbers report saying that it wasnt. They are also saying something about an indemnity from the plumbers in the first place saying that all pipes were properly fitted correctly on construction(sounds strange to me). Can anyone give advice on what my options are in resolving this.