The Waterproofing Experts
1800 326 723When it comes to strata properties, even small waterproofing issues can quickly become costly, disruptive, and frustrating for owners and tenants. From balcony leaks to roof drainage failures, most waterproofing problems stem from one thing — improper preparation or non-compliance during installation.
At Danrae Group, we’ve seen firsthand how preventable defects cause major structural damage. Here are the five most common waterproofing challenges we encounter in strata complexes and how to avoid them.
Poor Surface Preparation
Surface preparation is the foundation of a watertight system. Skipping proper cleaning, priming, or leveling can cause the membrane to fail before it’s even tested. Dust, oil, or trapped moisture lead to blistering, peeling, and early delamination.
Always ensure the substrate is clean, dry, and structurally sound before membrane application. A compliant primer and moisture test are non-negotiable.
Incorrect Detailing Around Penetrations
Balcony posts, drains, and service penetrations are among the most common leak points. When not properly sealed or reinforced, water tracks underneath the system and into cavities.
Detail all penetrations with reinforced membrane layers and termination bars. Each penetration should be tested before final sealing.
Inadequate Drainage Systems
Ponding water is a red flag. Poor falls or blocked outlets can place unnecessary stress on membranes and joints. Over time, this can lead to structural damage and mould growth.
Ensure all roof and balcony surfaces are built to correct falls, with clear outlets and overflow provisions that meet AS4654.
Lack of Maintenance
Even the best systems require regular inspections. Strata buildings often miss annual maintenance, which means small cracks or sealant failures go unnoticed until major leaks appear.
Schedule annual inspections and maintenance through a trusted remedial waterproofing partner. Early detection means lower repair costs and longer system life.
Non-Compliant Waterproofing Products
Not all membranes are created equal. Using non-compliant or untested materials may save money upfront, but it often leads to costly remediation later.
Always verify that the products meet Australian Standards and are applied by certified installers.
Waterproofing in strata buildings is not just about sealing surfaces it’s about compliance, preparation, and ongoing maintenance.
We help strata managers and building owners eliminate these risks with compliant systems, expert remediation, and lifetime maintenance programs, contact us today so we can protect your assets.
