Unit 3/1-3 Whyalla Place Prestons NSW 2170
Level 1, 1 Burelli Street, Wollongong NSW 2500
Level 4 & 5, 15 Moore Street, Canberra ACT 2601
180 Lonsdale Street, Melbourne VIC 3000
When 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.
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.
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.
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.
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.
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.
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.
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.
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