Balcony drainage systems in multi-residential design: Common challenges, solutions and the impact of NCC 2025

Balconies in multi-residential buildings are popular for enhancing indoor-outdoor living but require effective drainage systems. Poor drainage can lead to water buildup, causing structural damage and long-term degradation of the building. As multi-residential developments continue to expand across Australia, the complexity of balcony designs has grown. Proper drainage design is essential to prevent defects and ensure the durability of new construction.

Balcony Drainage Systems in Multi-Residential Design: Common challenges, solutions and the impact of NCC 2025 looks at the reasons why balconies leak and the drainage solutions that will prevent water accumulating and entering the indoor environment. We also consider the upcoming changes related to water shedding and waterproofing in the 2025 update of the National Construction Code (NCC).

Stormtech, a proudly Australian-owned company, has been at the forefront of drainage innovation for over 35 years. As the original inventors of the permanent formwork slot drain, linear drainage for bathroom applications, and threshold drainage, Stormtech has consistently pushed the boundaries of what's possible in the industry.

Download this whitepaper to learn why balconies leak and the drainage solutions that will prevent water accumulating and entering the indoor environment.