Leaking bathroom, brick wall or balcony? We find the real cause and fix it with the right membrane – licensed, with a free inspection and a 7-year warranty.
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Randwick NSW 2031
Searching for experienced waterproofers in Randwick? We specialise in waterproofing services in Randwick for homeowners, landlords, builders and strata managers. From bathroom leaks to brick wall and balcony repairs, our licensed team gets it right the first time – free inspection, written quote, 7-year warranty.
From Federation homes and terraces to apartment blocks, the properties we waterproof in Randwick and across the eastern suburbs vary a lot. What doesn’t change is our approach: inspect carefully, find the cause, and use a membrane system that suits the surface, the exposure and how the space is used.
Because we hold Waterproofing Licence 36763C and certify our work to Australian Standards, our waterproofing is recognised by insurers, certifiers and strata committees – and it’s covered by a written 7-year warranty.
We offer the full range of waterproofing in Randwick, with particular focus on bathroom, brick wall, balcony and rooftop work – the areas where water causes the most damage when membranes fail.
Bathrooms
Whether you’re renovating or chasing a leak, the membrane under the tiles is what keeps water where it belongs. We install certified wet-area membranes with bond-breakers, reinforced corners and properly sealed penetrations, then issue a compliance certificate for your records.
Damp walls
Salt marks, blistering render and mould low on internal walls all point to water moving through the masonry. We seal external walls and parapets and treat rising damp to stop the problem coming back.
Balconies
A balcony over a living room or garage needs a membrane that handles full sun, heavy rain and movement. We prepare the slab properly, correct falls where needed, and detail every edge, outlet and threshold so water drains away instead of finding its way inside.
Rooftops
From apartment rooftops to commercial roof decks and roof gardens, we install trafficable and non-trafficable membranes to suit how the roof is used, with box gutters and outlets sealed as part of the job.
Below-ground waterproofing for new builds and remedial seepage repairs in existing basements and garages.
Box and eaves gutters re-membraned so storm water runs off the roof instead of spilling into walls and ceilings.
Lift pits waterproofed to stop seepage, standing water and corrosion that can damage lift equipment and trigger costly call-outs.
A properly sealed laundry floor and upturn protects floors, walls and neighbouring rooms from washing machine and tub leaks.
Remedial floor membranes for wet areas, ground-floor slabs and commercial floors, matched to the substrate so water can't move through.
Epoxy resin injected under existing tiles seals a leaking shower without demolition – a faster, lower-cost fix when the tiles are still sound.
Planter boxes and podium gardens lined with root-resistant membranes and proper drainage so they don't leak into walls or car parks.
Membranes for concrete pools and spas, applied before tiling on new pools or as a remedial fix for a pool that's losing water.
Before any work is quoted, we pinpoint where the water is coming from – saving you from paying to fix the wrong thing.
Every Randwick job is done under Waterproofing Licence 36763C, so the work is recognised by insurers, certifiers and strata committees.
Water rarely shows up where it gets in. A free inspection traces the leak to its source before we quote, so you pay to fix it once.
Wet areas are waterproofed to AS 3740 and outdoor areas to AS 4654, and you receive a compliance certificate when we finish.
We work for homeowners, landlords, builders, strata managers and businesses across Randwick and nearby suburbs.
A free written quote that explains what’s wrong, the system we’ll use and the price – no surprises when the job is done.
Our waterproofing comes with a 7-year written warranty – long after the tiles go down, we still stand behind the work.
Spotted any of these at your Randwick home, unit or business? Call us before a small leak becomes a big repair.
The bond has failed because the bed underneath is wet.
Water is sitting behind tiles or inside the wall cavity.
Rising or penetrating damp is getting into the masonry.
Efflorescence means water is moving through the masonry.
A bathroom, balcony or roof above is leaking through the slab.
Box gutters or roof outlets can’t cope and spill inside.
How every waterproofing job in Randwick runs, from first call to final certificate.
We visit your Randwick property and trace the leak to its source.
A clear quote with the cause, the system and the price.
Surfaces prepared and primed, then the right membrane applied at full thickness.
Flood tested where suitable, with a compliance certificate and 7-year warranty.
From homes and units to commercial buildings, we cover every part of Randwick NSW 2031 and the surrounding eastern suburbs. Call to book a free inspection at a time that suits you.
AB Sydney Waterproofing 24 Copeland St, Liverpool NSW 2170 0449 725 455 avo.bghdoean@gmail.com
Yes – we work across Randwick and nearby suburbs every week, for homeowners, landlords, builders and strata managers. Call 0449 725 455 to arrange a free inspection.
Yes. We apply a certified membrane to AS 3740 before tiling and provide a compliance certificate for your records, your builder and any future sale.
Yes. We find where the moisture is coming from and treat and seal the brickwork with a system suited to the wall’s age and type.
Most shower and balcony repairs take a few days including curing time; tile injection is usually done in a day. Larger roofs, basements and strata jobs are scheduled in stages – we’ll give you a timeframe with your quote.
Yes. Every job comes with a written 7-year warranty on workmanship, plus a compliance certificate for wet areas – useful for insurance, strata and future sales.
What a failed bathroom membrane can cost you, and why getting it right matters.
Read MoreWhat happens when waterproofing fails – and how to avoid the cost.
Read MoreWhy balconies fail at the door sill, drain and balustrade, and how the right membrane stops it.
Read MoreTalk to a licensed waterproofer today – free inspection and written quote.
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