Waterproofing is one of those home maintenance jobs that homeowners often only think about when a problem appears—such as leaks, damp patches, or mould. In 2026, the cost of hiring a waterproofing company in Australia typically ranges from $10 to $58 per square metre, depending on the size and complexity of the job. Hourly rates generally sit between $30 and $82, while daily rates can range from $400 to around $518.
These figures are based on recent quotes submitted through ServiceSeeking.com.au and reflect how waterproofing professionals commonly price their work across different job types. Most jobs are priced per square metre, particularly for larger areas like bathrooms, balconies, and basements.
Keep in mind, however, that these figures can vary depending on several factors, including the scale and requirements of the job.
Across Australia, waterproofing services are quoted in several ways depending on the project type. Larger surface areas are typically priced per square metre, while smaller repairs may be charged hourly or per metre.
Based on recent data from ServiceSeeking.com.au, homeowners can expect the following price ranges:
On average, the typical hourly equivalent of a full-day rate (8 hours) works out to approximately $64.74 per hour.
These price structures reflect the different types of waterproofing jobs, from sealing shower recesses and balconies to protecting foundations or retaining walls.
When you request quotes from a waterproofing company, the pricing structure often depends on the type of job involved.
For large surface areas—such as bathrooms, laundries, balconies, or basements—professionals typically charge per square metre. This allows the cost to scale with the size of the waterproofed surface and ensures that labour and materials are factored accurately.
Hourly pricing is more common for repair work, inspections, or smaller sealing jobs. For instance, fixing leaks around window frames, resealing joints, or addressing minor damp issues may only require a few hours of labour.
Per-metre pricing is generally used when waterproofing long, narrow surfaces. Examples include sealing expansion joints, retaining walls, or external wall seams where moisture penetration can occur.
Daily rates are sometimes applied to larger projects that require a full day or more of labour, such as waterproofing a large balcony or preparing multiple wet areas during a renovation.
While the figures above provide a helpful guide, waterproofing costs can vary significantly depending on the specifics of the project.
One of the biggest factors is the size of the area being waterproofed. Larger spaces require more materials and labour, which naturally increases the total cost. However, bigger projects may also have a lower cost per square metre due to economies of scale.
The location of the waterproofing also matters. Bathrooms, showers, balconies, basements, and rooftops each require different preparation methods and waterproofing membranes. Areas exposed to heavy weather conditions or constant moisture may need more durable systems.
Another important consideration is the condition of the existing surface. If the area already has cracks, leaks, or structural damage, additional preparation work may be needed before waterproofing can begin. This can include removing tiles, repairing concrete, or applying primer layers.
Access can also influence pricing. If the work area is difficult to reach—such as a high balcony or tight crawl space—labour time may increase.
Waterproofing is essential in several areas of the home where moisture exposure is unavoidable.
Bathrooms are one of the most common waterproofing projects. Australian building standards require proper waterproof membranes beneath tiles in wet areas to prevent water from leaking into surrounding structures.
Balconies and decks are another key area. Without proper waterproofing, rainwater can seep through surfaces and cause structural damage to the building below.
Basements and retaining walls also often require waterproofing to prevent groundwater from entering the property. These jobs can involve specialised membranes and drainage systems.
Roof and gutter junctions may also require sealing to prevent leaks during heavy rainfall.
Because each type of job has different technical requirements, the final cost can vary depending on the waterproofing system used.
Although small sealing jobs may seem straightforward, proper waterproofing is a specialised trade that requires experience and the correct materials.
Professional waterproofers understand how to apply membranes, seal joints, and prepare surfaces so that water cannot penetrate the structure. Poor waterproofing can lead to costly issues such as mould growth, timber rot, and structural damage.
Hiring a licensed waterproofing company also helps ensure the work complies with Australian building standards—particularly important for bathrooms, laundries, and balconies during renovations.
For homeowners planning renovations or dealing with persistent leaks, getting multiple quotes can help ensure a fair price and the right solution for the job.
The best way to understand the true cost of waterproofing is to request quotes from experienced professionals.
When asking for quotes, it helps to provide details such as the location of the job, the size of the area, and whether any leaks or damage are already present. Photos can also help waterproofers assess the situation more accurately.
Comparing several quotes allows homeowners to better understand the typical price range and identify reputable providers.
The waterproofing prices listed in this guide are based on recent quotes submitted through ServiceSeeking.com.au and are intended as general estimates only.
Keep in mind, however, that these figures can vary depending on several factors, including the scale and requirements of the job, site conditions, materials used, and the complexity of the waterproofing work required.