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Check that the expansion pipe is the correct height measure the distance from the base of the boiler to the water level in the expansion tank.(in meters) and times it by 40 and add 150mm this will be the height at which the expansion pipe should terminate in to the tank.

Linda How old is the toilet? you would be better off going to a plumbers merchant as there knowledge is a great deal better than diy shops. One other thing is there a service valve on the water supply pipe to the toilet cistern? if there is try slowing the flow down a bit (you may need a...

Check that there is water in the system by checking the level of water in the Feed and Expansion tank in the loft if there is water it may be an airlock consider using a desludger and flushing the system out refilling and then seeing what happens.

You need to fit a new ballvalve or the cheaper option buy a re-washering kit for it. And give it a good clean,that should solve your problem. Regards John

Somethings not right here!! I've just installed a ring main, and you have two pairs of wires to each socket all of mine are wired up except one to which the socket was faulty all the others work without this one inline I suspect what you have is a radial circuit or a couple of sockets that have...

Maureen You have a classic case of water hammer try to identify where the sounds are actually eminating from it may be simple case of moving two pipes apart from each other have a look on How to pages I remember seeing something about causes of water hammer Regards John.

A fairly easy job but I need to know what type of system you have? ie what type of hot water cylinder? Direct or Indirect or primatic? What type of boiler you have is the boiler a combination or condensing type is the system pressurised? To recognise a pressurised system you won't have a feed...

Sounds like the boiler is ketteling use a sludge remover it is more gentle than a descaler as it would be likely to do more harm than good as your system is getting on a bit. Best of Luck John

Difficult one this, I've just finished a loft conversion the dormer roof is normally lower than your existing ridge as a steel is placed under the ridge to support it and the timbers for the dormer come off it, not only that but your floor level will be raised as well, as 8 x 2 joists need to go...