I removed a radiator recently to do some painting behind. It was all fairly straightforward - I closed both valves, drained the rad fully, and removed it from the wall with minimal fuss. I have a combi boiler so the pressure dropped to 0 but I was able to repressurise easily.
Since then though the pressure keeps dropping to 0 every couple of days or so. Does this mean there's a leak somewhere? Is it possible I damaged the piping under the floorboards in someway? The piping is sticking up from the floorboards rather than out of the wall - on both sides I'm able to slide the pipes up and down slightly (i.e. they're moveable slightly) which initially concerned me, but I think they were like that already.
