Balcony Leak Repair & Bathroom Waterproofing in Kellyville NSW – A Remedial Waterproofing Success Story

💧 The Challenge: Leaking Balcony & Failing Bathroom Membrane in Kellyville

A homeowner in Kellyville, NSW reached out to Hills Waterproofing with two persistent issues:

1. Water seeping through their upstairs balcony, staining internal ceilings

2. A leaking bathroom, where the existing waterproofing had failed

Like many homes across Sydney, poor initial installation and aging materials had compromised the waterproofing layers. Without urgent intervention, the risk of structural water damage was growing by the day.

🛠️ Our Solution: Remedial Waterproofing Done Right

We began with a thorough site inspection, identifying the leak sources and assessing moisture levels behind the walls and substructure.

✅ For the balcony leak repair, our team:

• Removed old grout and membrane

• Applied industrial-grade waterproofing membranes suitable for exposed areas

• Used Australian-certified products (Sika & Enviro Systems)

• Finished with re-tiling and joint sealing for a watertight result

✅ For the bathroom waterproofing, we:

• Demolished the shower base and faulty wall linings

• Installed a compliant new membrane system as per AS 3740

• Reinforced corners and wall-floor junctions

• Completed the job with tiling and a new silicone sealant

Our approach combined advanced remedial waterproofing methods with precision installation to ensure long-term protection.