Leaking bathroom, rooftop or floor? We find the real cause and fix it with the right membrane – licensed, with a free inspection and a 7-year warranty.
Seven Hills NSW 2147
Looking for a professional waterproofing service in Seven Hills? AB Sydney Waterproofing are experts in providing reliable residential, strata and commercial waterproofing across Seven Hills NSW 2147. As licensed waterproofers in Seven Hills, 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.
Properties across Seven Hills and the wider western Sydney range from family homes alongside a large industrial area. 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.
From inside the bathroom to the roof and below ground, we waterproof it all in Seven Hills. These four services are the ones we’re asked for most often.
Bathrooms
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.
Rooftops
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 floors
Screeds, concrete and timber subfloors each need a different approach. We choose the primer, membrane and finish to suit the floor and how it’s used.
Laundry leaks
Many older laundries were built with no membrane at all, especially in extensions and converted spaces. We waterproof the floor and wall junctions to AS 3740 during renovations, or as a stand-alone repair.
Balconies, terraces and courtyards re-membraned at door sills, drains and balustrades so water stops reaching rooms and ceilings below.
Dincel, block and retaining walls, basement slabs and car parks protected against groundwater and soil moisture.
Long box gutters overflow inside when their lining fails. We seal gutters and outlets to keep water on the outside.
Lift pits waterproofed to stop seepage, standing water and corrosion that can damage lift equipment and trigger costly call-outs.
Shower leaking but tiles still solid? Resin injected through the grout lines can seal it in a day, without a full renovation.
Planters and garden beds against walls or over slabs waterproofed and drained so roots and water stay where they belong.
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.
Our inspection finds the real source of a leak first, so you only pay to fix what's actually failing.
We hold Waterproofing Licence 36763C and put our name to every membrane we install – no unlicensed subcontractors.
We follow AS 3740 inside and AS 4654 outside, and hand over the paperwork your certifier, insurer or buyer will ask for.
From a single bathroom to a full apartment block or commercial roof, we plan work around residents, tenants and business hours.
Our free quote spells out the problem, the solution and the cost, so you can decide with all the facts.
Every job in Seven Hills is backed by a written 7-year warranty. If something isn’t right, we come back and fix it.
We test and trace the leak first, so the quote covers what’s actually failing – not guesswork.
Water damage gets more expensive the longer it runs. If you notice any of these, book a free inspection.
The bond has failed because the bed underneath is wet.
Water is sitting behind tiles or inside the wall cavity.
Box gutters or roof outlets can’t cope and spill inside.
A bathroom, balcony or roof above is leaking through the slab.
Efflorescence means water is moving through the masonry.
Water is wicking out of a wet area into the timber next to it.
Clear, careful and fully certified – our process for every Seven Hills property.
We visit your Seven Hills 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 Seven Hills NSW 2147 and the surrounding western Sydney. 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 waterproof family homes alongside a large industrial area throughout Seven Hills NSW 2147 and the surrounding western Sydney. Call 0449 725 455 to book a free inspection.
Often, yes. If the tiles are still well bonded, tile injection seals the leak from underneath without demolition. If the membrane has failed completely, we’ll explain why a strip-out is the better long-term fix.
Often it’s a box gutter, outlet or upstand that can’t cope with heavy rain. We’ll inspect and find the exact source before quoting.
Yes. All work is carried out under Waterproofing Licence 36763C, and we’re happy to show it on site. A licensed waterproofer matters for insurance claims, strata approvals and selling your 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.
What a failed bathroom membrane can cost you, and why getting it right matters.
Read MoreHow a roof membrane handles Sydney’s sun, heat and storms.
Read MoreWhat owners of offices, warehouses and strata buildings should watch for.
Read MoreLicensed waterproofers – free inspection, written quote and a 7-year warranty.
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