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.
Norwest NSW 2153
Looking for a professional waterproofing service in Norwest? AB Sydney Waterproofing are experts in providing reliable residential, strata and commercial waterproofing across Norwest NSW 2153. As licensed waterproofers in Norwest, we find the real cause of every leak and fix it with long-lasting membranes – backed by a free inspection and a written 7-year warranty.
Like much of the Hills District, Norwest is a mix of business park offices and apartments to family homes. Whatever the building, water finds the weakest point – a cracked grout line, a failed door sill, a blocked outlet or an unsealed joint – and the damage often shows up a long way from where the water gets in.
We waterproof internal wet areas to AS 3740 and external areas to AS 4654, prepare every surface properly before the membrane goes on, and finish with a compliance certificate where required. That’s how we can back our work with a written 7-year warranty.
Every waterproofing service is available in Norwest. Balcony, Basement, Rooftop and Bathroom waterproofing get our closest attention, because they’re the jobs Norwest property owners call us for most.
Balconies
Balconies fail at the door sill, the drain and the balustrade fixings. Once water gets past the membrane it stains the ceiling below, lifts tiles and leaves white efflorescence on the soffit. We strip and re-waterproof balconies in Norwest with UV-stable external membranes to AS 4654.
Basements
Water pressure behind a wall never stops, so below-ground waterproofing has to be continuous – walls, slab and the joint between them. We seal construction joints and penetrations, then apply a membrane designed for constant moisture.
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.
Wet areas
Most bathroom leaks start at the same few weak points: cracked grout, a poorly sealed floor waste, or a membrane that stops short at the wall. We find exactly where water is escaping and fix it – with tile injection when the tiles are sound, or a new membrane when they’re not.
We line and seal box gutters, sumps and outlets so heavy storms drain away instead of overflowing into the building.
Positive and negative-side membranes for lift pits that sit below the water table, on new builds or as a remedial fix.
A properly sealed laundry floor and upturn protects floors, walls and neighbouring rooms from washing machine and tub leaks.
Concrete and screed floors waterproofed for wet areas, ground floors and commercial spaces where water must stay out of the slab.
Shower leaking but tiles still solid? Resin injected through the grout lines can seal it in a day, without a full 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.
Concrete pools and spas waterproofed so the shell holds water and the paving and ground around it stay dry.
Not sure where the water is coming from? We trace leaks through slabs, walls, showers and balconies before any work is quoted.
Every Norwest 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 Norwest and nearby suburbs.
Water damage gets more expensive the longer it runs. If you notice any of these, book a free inspection.
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.
The bond has failed because the bed underneath is wet.
Clear, careful and fully certified – our process for every Norwest property.
We visit your Norwest property and trace the leak to its source.
You get the findings, the fix and the cost in writing.
We clean, repair and prime the substrate, then build up the membrane to the specified thickness.
Wet areas are flood tested where suitable, then certified and covered by our warranty.
Our licensed waterproofers service all of Norwest and the wider Hills District. Wherever you are in the suburb, we can inspect, quote and complete the job with minimal disruption.
AB Sydney Waterproofing 24 Copeland St, Liverpool NSW 2170 0449 725 455 avo.bghdoean@gmail.com
Yes – we work across Norwest and nearby suburbs every week, for homeowners, landlords, builders and strata managers. Call 0449 725 455 to arrange a free inspection.
Most balcony leaks start at the door sill, the drain or the balustrade fixings, where the membrane has cracked or was never properly detailed. We find the failure point and re-waterproof the balcony properly.
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 – we hold Waterproofing Licence 36763C. Using a licensed contractor protects you if you need to make an insurance claim, get strata approval or sell the property.
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.
Why balconies fail at the door sill, drain and balustrade, and how the right membrane stops it.
Read MoreWhat happens when waterproofing fails – and how to avoid the cost.
Read MoreHow a roof membrane handles Sydney’s sun, heat and storms.
Read MoreLicensed waterproofers – free inspection, written quote and a 7-year warranty.
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