Top 10 Causes of Building Leaks: Protecting Your Strata Property

Discover the top causes of building leaks and how to protect your strata property. Read on to learn about balcony leaks, shower leaks, roof leaks, and more. Take proactive steps to prevent water leaks today if you want to protect your property investment.

Building leaks can be a nightmare for strata property owners and tenants. They not only cause inconvenience but also lead to financial strain and potential structural damage. To effectively prevent and remediate building leaks, it is essential to understand their causes. In this blog post, we will explore the top 10 causes of building leaks, as identified by Strata Management Consultants. By knowing these causes, strata property owners can take proactive steps to protect their buildings and mitigate strata risks associated with water leaks.

Types Of Building Leaks

Building leaks occur when there is an unwanted entry of water into the building’s interior, compromising its structural integrity. Cracks, gaps, and material breakage are common entry points for water infiltration.

Balcony Leaks

One common issue that plagues modern multistorey buildings is the occurrence of leaks in tiled balconies. These balconies, although sought-after by many, have a tendency to develop water infiltration problems. Despite the best efforts of builders to waterproof these areas, balcony leaks tend to be a rather frequent occurrence. Unfortunately, the consequences of these leaks extend beyond the affected balconies themselves. Neighbours residing below often bear the brunt of the situation, experiencing water penetration issues that can wreak havoc on their property. As a result, property managers find themselves grappling with the challenge of effectively addressing this persistent problem.

Shower Leaks & Water Leaks

In the realm of shower maintenance, it’s essential to address the common issue of shower leaks. These leaks can arise from various sources, including walls, tiles, shower bases, and even around tap and shower fittings. The presence of improper waterproofing, drainage, and detailing only exacerbates the problem, allowing for persistent water leaks to occur. Unfortunately, the consequences of these leaks extend beyond the immediate vicinity of the shower. Neighbouring units become vulnerable to potential damage, giving rise to the pressing need for proactive solutions and protective measures. By prioritizing the correct installation and upkeep of these areas, we can mitigate the risks associated with shower leaks and safeguard the well-being of all units involved.

Roof Leaks, Flashings & Box Gutters

When it comes to roof leaks, it’s important to note that they are not exclusive to traditional roofing designs. In fact, modern building structures often incorporate unique elements such as low-angle roof sheeting, box gutters positioned over living areas, and extensive flashings. While these architectural features add a touch of contemporary style, they also present challenges when it comes to waterproofing. Leaks can arise from various sources, ranging from undersized box gutters to buckled roof sheets and improperly sealed flashings. The complicated nature of these leaks makes it difficult to both identify and rectify the issue at hand. As a result, skilled professionals are required to diagnose and implement the necessary repairs, ensuring that the roof remains watertight and protected against potential leaks in the long run. So in short, this is not a DIY area – get in the experts.

Balustrade Ancor Points

With balustrade ancor points, secure anchoring of glass balustrades onto tiled surfaces is of utmost importance. To ensure stability and safety, the bolts used to anchor the balustrades are typically secured into the balcony structure itself. However, this installation method can pose challenges, particularly when it involves penetrating through the tiles and waterproof membrane. While this design may be visually appealing, it does present potential problems when it comes to addressing leaks in balconies. Fixing these leaky balconies becomes a more complex task due to the intricacies involved in navigating the tile and waterproofing layers. It is vital to approach such issues with care and seek professional assistance to effectively rectify these challenges and maintain the integrity of the balustrade ancor points.

External Cladding

With exterior cladding, ensuring the of the joints is crucial to prevent water leaks. Whether it’s weatherboards, sheet cladding, rendered brickwork, or bricks, proper sealing during the construction phase is essential. However, with the passage of time, joints can loosen or become undone, creating opportunities for water infiltration into the building. It is important to recognize the significance of regular maintenance and inspections, as these can help identify any compromised joints and take proactive measures to mitigate potential water leaks. By addressing these issues promptly and implementing appropriate sealing techniques, the longevity and durability of the external cladding can be preserved, ensuring optimal protection from moisture and enhancing the overall quality of the building structure.

Door Leaks

Doors, door frames, and sills are common sources of door leakage. Timber and aluminum doors have their own peculiar faults that can contribute to leaks. Providing weather protection, such as verandahs or canopies, can help prevent water from sheeting down the surface of the door.

Window Leaks

Timber and aluminum windows can both be vulnerable to leaks. Rotting timber, damaged sashes, and improper installation of aluminum frames against the surrounding cladding can all contribute to water infiltration. Common leak points include where the sill meets the vertical timber frame or around the outside of aluminum frames.


Rainheads capture rainwater from the roof and direct it into the downpipe. Although seemingly harmless, rainheads can be a significant source of difficult-to-find leaks. Mysterious leaks around rainheads may indicate a problem with these systems.

Old Brick Walls

Old brick walls, especially those located between two existing properties, can be susceptible to leaks. Damaged and loose bricks, as well as inadequate capping flashings, can allow water to find its way down the wall and into the building. Rising dampness is a common issue associated with old brick walls.

By being aware of these top causes of building leaks, strata property owners can take proactive measures to address and prevent them. If you are facing building leaks in your strata property, consider consulting with a professional strata management company to assess your building and implement effective solutions.


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