480 Queen Street, Brisbane Waterproofing

Following the completion of an earlier project in the building, Buildcorp were engaged under an ECI arrangement to investigate remediation works for water ingress issues from unknown origins. Deconstructed works were undertaken to the Level 4 open parklands of 480 Queen Street to ascertain the source of water ingress.

Following investigations, it was discovered that the waterproofing membrane to the entire Level 4 Parklands template was failing due to incorrect installation and non-compliant application. Buildcorp worked with the Waterproofing Engineer to develop a detailed design to remediate the failed waterproofing membrane identified and was centered around providing the best performing membrane for our client.

The solution focused on the product’s 20-year lifecycle, durability, and adaptability for routine maintenance and alteration, while minimising impact on existing tenants.

In addition, it was essential to prioritise tenant and public safety as well as their overall experience. To achieve this, we placed a significant emphasis on maintaining safe access throughout the area, maintaining an organised site, tidy overhead gantries, hoardings, and scaffolding. These measures helped to create a safe and pleasant environment for everyone involved.

Our scope included:

• Full removal of existing garden beds on Level 4, including for horizontal gardens, raked gardens and vertical gardens on Adelaide Street and Queen Street
• Repair and replacement of waterproofing membrane
• Repair works to water damaged structural steel and passive fire on Level 3
• Installation of new planter boxes across a 1,600m² suspended floor plate