"On average, a well-designed bathroom should last up to 25 years, so it pays to invest in high-quality, carefully engineered products that combine durability with timeless style," advises Ronan O'Grady of Flair Showers. So where should you spend? According to O'Grady, the everyday essentials are where you'll notice the difference most. His speciality is showers - one of the most frequently used spots in the home.