I have singing pipes in my house. Every time we flush the master or up stairs toilets the pipes start to sing. Grrroaaannnn - all through out the house. What can I do to stop them from groaning? Can I do it myself or must I call a plumber?

The noise sounds like the ballcocks filling. Do both toilets do this when flushed? You could try reducing the flow at the angle stops or simply replace the ballcocks, Good luck, Tom