Bathroom Sinks and Basins

Professional bathroom sink installation by a licensed plumber typically costs between $100 and $300 for standard installations. Complex installations may incur higher costs, depending on the plumbing modifications required. Many Australian homeowners opt for professional installation to ensure compliance with plumbing regulations and proper sealing.

These sinks sit beneath the counter, creating a sleek look and allowing crumbs or spills to be wiped in effortlessly. Drop-in (above-counter) sinks are generally simpler to install and replace. The choice depends on your bathroom design preferences, budget, and practicality requirements.

Consider replacing your bathroom sink when you notice persistent cracks, chips, severe staining that cannot be removed, or outdated designs that affect bathroom functionality. Most ceramic basins last 15-20 years with proper care, though visible damage compromising water containment indicates replacement is necessary.

Bathroom sink drains may develop odours due to biofilm buildup, dry P-traps that allow sewer gases to escape, or accumulated debris in overflow channels. Regular use of baking soda and vinegar, followed by hot water, can help maintain clear, odour-free pipes. 

Ceramics remains the most popular bathroom sink material due to its durability, non-porous surface, and value for money. It resists staining, maintains its appearance, and complements a variety of bathroom styles. Other materials include stainless steel, which offers excellent durability, as well as natural stone or terrazzo options that provide a distinctive aesthetic appeal.

Water from bathroom sinks in Australia comes from the same supply as kitchen taps and meets Australian drinking water standards. However, the internal plumbing of bathroom sinks and potential contamination from splashing make kitchen taps the preferred source of drinking water.

Standard bathroom sink heights typically range from 80 to 85 cm, measured from the floor to the top of the basin rim. This height suits most adults comfortably. Wall-hung basins can be installed at custom heights to accommodate specific user requirements or universal design principles for accessibility.

Bathroom sink drains do not necessarily need to be centred. Offset drains can provide more usable basin space and accommodate plumbing configurations. The position of the drain should align with the P-trap and existing plumbing for proper drainage performance.

To remove a bathroom sink drain, first disconnect the P-trap by loosening the slip nuts that secure it in place. Then, unscrew the locknut beneath the sink that secures the drain assembly. Apply penetrating oil to loosen corroded parts if necessary. Once loose, the drain assembly can be lifted out from above. Always place a bucket underneath to catch residual water.