Slow dripping after flush its a sign of flush valve failing. To replace this part requires almost a complete dismantle . A standard flush valve set its not expensive and some kits include fill valve which is advisable to be replaced.
When a toilet is slow to fill with water or leaking from top might be the case of filling valve failing, with membranes not holding and not water tight anymore. Nowadays, there are a lot of modernised parts which will fix most of old faults giving a fast and silent water fill, mostly felt during night hours.
Concealed toilet put an additional labour behind due to tight and sometimes hard access to components.
When the time comes to replace an old toilet you need to know what’s behind replacing it.
First of all, the old toilet has to come out, check the floorboards and surface, prepare the cold feed on the right side for a new model, check, inspect and modify the 4” outlet pipe to match with exact heights and distances for more modern toilet designs. Where a plastic waste pipe is fitted, the position of the toilet can be adjusted or moved slightly, where a cast iron pipe is already installed, the same position has to be maintained.
Price starting from £250 plus any other materials needed to complete the job. Requires 3-6 hours labour plus parts to complete the job
Most of the toilets can be repaired. The most common repair is replacing flush valve and fill valve (water inlet valve).
Concealed toilets are more expensive to repair as their more complex fixing system is used. Usually, the access is very difficult which sometimes forces us to almost dismantle everything around to fix the issue.