Leaking balcony, basement or rooftop? We find the real cause and fix it with the right membrane – licensed, with a free inspection and a 7-year warranty.
Parramatta NSW 2150
Need dependable waterproofing in Parramatta? Our licensed team provides expert Parramatta waterproofing for houses, apartments, townhouses and commercial buildings. We repair leaking balconys, basements, rooftops and more using proven membrane systems, with every job backed by a written 7-year warranty.
Properties across Parramatta and the wider western Sydney range from high-rise apartments and office towers to heritage homes and units. Each brings its own waterproofing challenges – older wet areas built before modern membranes were required, outdoor areas exposed to sun and storms, and below-ground walls that hold back wet soil.
Our process is simple: a free inspection, a clear written quote, proper surface preparation, the right membrane applied at full thickness, and testing and certification at the end. No shortcuts, and no paying twice for the same leak.
We offer the full range of waterproofing in Parramatta, with particular focus on balcony, basement, rooftop and floor work – the areas where water causes the most damage when membranes fail.
Balconies
Water should run off a balcony, not sit on it. We check falls, outlets and thresholds first, fix any ponding, then apply a flexible external membrane with reinforced corners and properly sealed upstands – so your Parramatta balcony drains properly and stays sealed.
Retaining walls
Below-ground waterproofing has to resist constant water pressure, so the system matters. We use membranes suited to the wall type and conditions – applied before backfill on new builds, or from the inside where excavation isn’t practical.
Roofs & decks
A roof membrane only works if every upstand, outlet and penetration is sealed. We prepare the surface, reinforce joints and corners, and apply a UV-stable system matched to how the roof is used – plant deck, terrace or non-trafficable roof.
Floors
Wet-area floors, ground slabs and commercial floors need waterproofing that keeps water out of the concrete. We apply floor membranes and coatings in Parramatta matched to the substrate and the traffic the floor carries.
From a single leaking shower to a complete bathroom, we install certified wet-area membranes and fix failed ones before damage spreads.
We line and seal box gutters, sumps and outlets so heavy storms drain away instead of overflowing into the building.
Lift pits and shafts sealed against groundwater to protect lift equipment and stop corrosion in apartment and commercial buildings.
Laundry floors, tub areas and wall junctions sealed so constant moisture doesn't damage floors, skirting or the room next door.
Tile injection stops many shower leaks without ripping out the bathroom, so you avoid weeks of renovation.
Planter boxes and podium gardens lined with root-resistant membranes and proper drainage so they don't leak into walls or car parks.
Damp brickwork lets water track inside. We treat and seal masonry walls to keep moisture out for good.
Membranes for concrete pools and spas, applied before tiling on new pools or as a remedial fix for a pool that's losing water.
Our inspection finds the real source of a leak first, so you only pay to fix what's actually failing.
Every Parramatta job is done under Waterproofing Licence 36763C, so the work is recognised by insurers, certifiers and strata committees.
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.
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 Parramatta and nearby suburbs.
These are the early warning signs that waterproofing has failed. Catch them early and the repair is usually smaller.
A bathroom, balcony or roof above is leaking through the slab.
Efflorescence means water is moving through the masonry.
Groundwater is getting past below-ground walls or joints.
Water is passing through the wall instead of draining behind it.
Box gutters or roof outlets can’t cope and spill inside.
Water is sitting behind tiles or inside the wall cavity.
Clear, careful and fully certified – our process for every Parramatta property.
We visit your Parramatta 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.
We provide waterproofing throughout Parramatta and the surrounding western Sydney. Our team travels from our Liverpool base and works across Sydney every week, so inspections are easy to arrange.
AB Sydney Waterproofing 24 Copeland St, Liverpool NSW 2170 0449 725 455 avo.bghdoean@gmail.com
Yes. We waterproof high-rise apartments and office towers to heritage homes and units throughout Parramatta NSW 2150 and the surrounding western Sydney. Call 0449 725 455 to book a free inspection.
Yes. We inspect and quote for owners’ corporations, coordinate access with residents and provide warranties and certificates for the strata records.
Yes. Where excavating outside isn’t practical, we use negative-side systems applied from inside the basement to resist water pressure through the wall.
Yes. Wet-area waterproofing comes with a compliance certificate to AS 3740, and every job is covered by our written 7-year warranty.
Prices vary with the area, access, the condition of the surface and the system required. We inspect for free and give you a written quote, so there’s no guessing before you commit.
Why balconies fail at the door sill, drain and balustrade, and how the right membrane stops it.
Read MoreLiquid, sheet or injection – which system suits which job.
Read MoreHow a roof membrane handles Sydney’s sun, heat and storms.
Read MoreTalk to a licensed waterproofer today – free inspection and written quote.
