Balcony & Deck Waterproofing in Sydney
New balcony membranes and leaking balcony repairs for houses, apartments, strata buildings and builders across Sydney.
Get a Free QuoteCall 0410 495 592Balconies Take the Worst of the Weather
Balconies, terraces and decks sit out in full sun and rain for decades, and they move with the building. When a balcony membrane fails, the water usually shows up somewhere else entirely, in the ceiling below, the wall of the room next door, or as rust and staining around the balustrade.
WSA installs and repairs external waterproofing to AS 4654.1 and AS 4654.2 and the National Construction Code, with the upturns, terminations, drainage and door threshold details done properly. We work on new builds for builders and on remedial balconies for homeowners and strata.
Balcony & External Waterproofing Services
New Balconies
Membranes for new tiled balconies, terraces and podiums, installed ahead of tiling or paving.
Leaking Balcony Repairs
Strip out and re-waterproofing where the existing membrane has failed.
Timber Decks
Waterproofing under timber decking over habitable rooms.
Planter Boxes
Planter box membranes with protection and drainage so roots and water stay where they belong.
Strata Balconies
Remedial balcony waterproofing for owners corporations and strata managers.
Door Thresholds
Upturns and detailing at sliding doors, one of the most common leak points.
Where Balconies Usually Fail
Most balcony leaks start at the edges and penetrations, not in the middle of the slab. These are the details we focus on:
- Falls to drainage outlets so water does not pond
- Puddle flanges and outlets properly sealed into the membrane
- Upturns at walls and door sills to the required height
- Balustrade and post penetrations sealed
- Membrane terminations and edge details
- Compliance certificate issued
How It Works
Inspect & Quote
We look at the balcony, the drainage and the thresholds and give you a fixed price.
Preparation
Existing finishes removed where needed, the substrate repaired and falls corrected.
Membrane
The membrane is installed to the manufacturer’s datasheet and AS 4654.
Certificate
Issued with all relevant information for your certifier and your records.
Frequently Asked Questions
Common causes are failed membranes, poor falls, leaking outlets and missing upturns at the door. The water often travels before it appears, so the source is not always directly above the stain. A leak report will pinpoint it.
External above ground membranes are covered by AS 4654.1 and AS 4654.2, called up by the National Construction Code.
Some systems are designed for that, but it depends on the condition of the tiles and what has failed underneath. We will tell you honestly whether it will last or whether a strip out is needed.
Yes. We work with owners corporations and strata managers on remedial balcony waterproofing.
It depends on the size, the finish and whether the old tiles need removing. We will give you a timeframe with the quote.
Leaking Balcony or New Build?
Send us a few details below and we will get back to you. Builders can email plans to sammy@wsaustralia.com.au or call 0410 495 592.
