Failed strata balcony re-membraned to AS 4654.
Murarrie. A second-floor strata balcony in Murarrie, the tiles staining the wall below and the falls ponding. Stripped to the substrate, the fall corrected, the upturns and the drainage detailed, re-membraned to AS 4654 and certified.
- Project
- 048
- Completed
- May 2026
- Build time
- 4 days
- Footprint
- 8.4 m² balcony
Before 
After The job
What we walked into, and what we did.
The problem
A Murarrie strata complex had a second-floor balcony ponding after rain and staining the rendered wall in the unit below. Two earlier remedials had sealed the grout from the surface, and both leaked again the next storm. The body corporate needed a fix that the certifier would sign off and the insurer would accept on the building file, not another coat over the symptom.
Our approach
We diagnosed the source at the cove and the drain, then stripped the tiles and the failed membrane back to the substrate. The fall to drain was corrected with a screed, the upturns taken to height under the door threshold, the drain re-set and the cove detailed with bond breakers. A liquid-applied membrane to AS 4654 went down in two coats with the manufacturer hold-down between coats, then we flood-tested the balcony for 24 hours before the tiler returned.
The result
A balcony that drains the right way and a wall below that has stayed dry through two wet seasons. The compliance certificate went on the building file for the body corporate, the 10-year membrane workmanship warranty in writing, and the unit owner had photos and a paperwork pack for the next sale.
Materials
- Liquid-applied polyurethane membrane to AS 4654, two coats
- Screed correction for fall to drain, upturns to height
- Bond breakers in the cove, drain re-set, penetrations sealed
- Flood test held for 24 hours, AS 4654 compliance certificate issued
Named in writing
Materials and the honest number.
4 days on site
How the job ran.
- Day 1
Strip and diagnose
Tiles and failed membrane stripped, the cove and drain checked, the substrate ground and primed.
- Day 2
Correct the fall
Screed laid to correct the fall to drain, upturns set to height, drain re-set, junctions detailed for the bond breaker.
- Day 3
Membrane in two coats
Liquid polyurethane to AS 4654, first coat brushed in to the detail, second coat rolled over, each cured to hold-down.
- Day 4
Flood test and certify
Drain plugged and the balcony flooded for 24 hours, membrane held, compliance certificate issued and handed over.
On site
A closer look.
“Three remedials had failed. Sealline named the Standard on the quote, corrected the fall properly and flood-tested it for a full day. The body corporate finally has paperwork the insurer accepts.”
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