Certified membranes, honest advice and a written 7-year warranty. We waterproof balconys, bathrooms and basements across Crows Nest and nearby suburbs.
Crows Nest NSW 2065
Searching for experienced waterproofers in Crows Nest? We specialise in waterproofing services in Crows Nest for homeowners, landlords, builders and strata managers. From balcony leaks to bathroom and basement repairs, our licensed team gets it right the first time – free inspection, written quote, 7-year warranty.
Like much of the lower North Shore, Crows Nest is a mix of apartments and mixed-use buildings to terraces and semis. 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.
Every job starts with finding out exactly where the water is coming from. We then recommend the simplest fix that will last – whether that’s tile injection, a remedial membrane or a full strip-out – and explain the options clearly before you decide.
We offer the full range of waterproofing in Crows Nest, with particular focus on balcony, bathroom, basement and rooftop work – the areas where water causes the most damage when membranes fail.
Balconies
Leaking balconies are one of the most common strata repairs we do. We re-waterproof balconies and terraces with minimal disruption, keep residents and managers informed, and provide a written warranty for the owners’ corporation records.
Showers & en-suites
A failed shower membrane lets water into the floor, wall frames and the room or unit below – often for months before you see a stain. We repair leaking showers and waterproof new and renovated bathrooms in Crows Nest to AS 3740, sealing floor wastes, corners and wall junctions properly.
Basements
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.
Rooftops
Flat concrete roofs and roof decks pond water after storms, and ageing membranes crack under UV and heat. We re-membrane roofs in Crows Nest with systems designed for full sun exposure and ponding, keeping the floor below dry.
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.
Laundries leak quietly behind machines and tubs. We waterproof the floor and walls properly so the problem doesn't come back.
Concrete and screed floors waterproofed for wet areas, ground floors and commercial spaces where water must stay out of the slab.
Tile injection stops many shower leaks without ripping out the bathroom, so you avoid weeks of renovation.
Garden beds built against walls and over slabs are a common hidden leak. We waterproof and drain them properly.
Brick walls, parapets and chimneys sealed against rising and penetrating damp to stop salt damage, flaking render and mould inside.
Concrete pools and spas waterproofed so the shell holds water and the paving and ground around it stay dry.
Before any work is quoted, we pinpoint where the water is coming from – saving you from paying to fix the wrong thing.
Every Crows Nest job is done under Waterproofing Licence 36763C, so the work is recognised by insurers, certifiers and strata committees.
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 Crows Nest 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.
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.
Spotted any of these at your Crows Nest home, unit or business? Call us before a small leak becomes a big repair.
A bathroom, balcony or roof above is leaking through the slab.
Efflorescence means water is moving through the masonry.
The bond has failed because the bed underneath is wet.
Water is sitting behind tiles or inside the wall cavity.
Groundwater is getting past below-ground walls or joints.
Water is passing through the wall instead of draining behind it.
How every waterproofing job in Crows Nest runs, from first call to final certificate.
We visit your Crows Nest 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 Crows Nest and the surrounding lower North Shore. 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 work across Crows Nest and nearby suburbs every week, for homeowners, landlords, builders and strata managers. Call 0449 725 455 to arrange a free inspection.
Yes. We inspect and quote for owners’ corporations, coordinate access with residents and provide warranties and certificates for the strata records.
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.
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.
It depends on the size of the area, how much damage the leak has caused and the membrane system needed. Every job starts with a free inspection and a written, itemised quote, so you know the exact price before work begins.
Why balconies fail at the door sill, drain and balustrade, and how the right membrane stops it.
Read MoreHow a bathroom should be waterproofed, step by step, so it stays leak-free for years.
Read MoreWhat happens when waterproofing fails – and how to avoid the cost.
Read MoreTalk to a licensed waterproofer today – free inspection and written quote.
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