Often the first thing you will know about a leak in your bathroom is water pouring through the ceiling below. This is an all-too-common event and can be caused by a number of things. Often one of the reasons for water leaking through the floorboards of your bathroom is the silicon around the outside of the bath or shower. Although you may not realise it, the silicon actually plays a huge role in stopping water from the bath or shower leaking down the side and through the ceiling below. You may notice that your silicon has started to lift or that it is split in places. Once you have identified where the issue is you can look to replace the silicon. You should ideally remove the old silicon but you can add a new layer over the top.
Removing old silicon can be tricky. You can buy a special tool to do it but still you may find it hard work. You can also buy a solvent that dissolves some of the silicon making it easier to lift off.
Reapplying silicon is not an easy thing to do. It can be very messy and hard to get it to look neat. You may actually want to get a professional in to do it for you but removing the old silicon first will make the job easier and therefore cost you less.