The silicone seal around baths, shower trays, and bathroom sinks needs replacing over time, especially when unappealing black spots ruin the look of your bathroom or the sealant loses its adhesion. Old or damaged bathroom sealant can let water seepinto cracks and cause leaks, mould and rotting.
This guide explains why some parts of your bathroom need to be sealed, how to do it yourself and some common mistakes to avoid.