Leaking bathroom, laundry or balcony? We find the real cause and fix it with the right membrane – licensed, with a free inspection and a 7-year warranty.
Mortdale NSW 2223
Need dependable waterproofing in Mortdale? Our licensed team provides expert Mortdale waterproofing for houses, apartments, townhouses and commercial buildings. We repair leaking bathrooms, laundrys, balconys and more using proven membrane systems, with every job backed by a written 7-year warranty.
Homes and buildings in Mortdale – family homes to units near the station – all rely on waterproofing that’s hidden under tiles, screeds and coatings. When it fails, the first sign is usually a stain, a musty smell or a loose tile, and by then water has often been escaping for months.
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.
From inside the bathroom to the roof and below ground, we waterproof it all in Mortdale. 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.
Wet areas
Most laundry leaks come from the junction between floor and wall, where water from machines and tubs sits and soaks in. We waterproof the floor and turn the membrane up the walls so water stays contained.
Outdoor areas
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 Mortdale balcony drains properly and stays sealed.
Damp walls
Solid brick walls can draw moisture up from the ground or let rain through, causing flaking paint, salt deposits and musty rooms. We treat and seal brick walls, parapets and chimneys in Mortdale so moisture stays out of the masonry.
Remedial roof membranes for homes, apartments and commercial buildings, built to handle UV, heat and heavy downpours.
Groundwater kept out of basements, garages and below-ground rooms with membranes suited to constant moisture pressure.
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.
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.
Planters and garden beds against walls or over slabs waterproofed and drained so roots and water stay where they belong.
Membranes for concrete pools and spas, applied before tiling on new pools or as a remedial fix for a pool that's losing water.
Not sure where the water is coming from? We trace leaks through slabs, walls, showers and balconies before any work is quoted.
We hold Waterproofing Licence 36763C and put our name to every membrane we install – no unlicensed subcontractors.
Every job in Mortdale 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.
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.
These are the early warning signs that waterproofing has failed. Catch them early and the repair is usually smaller.
The bond has failed because the bed underneath is wet.
Water is sitting behind tiles or inside the wall cavity.
Water is wicking out of a wet area into the timber next to it.
A bathroom, balcony or roof above is leaking through the slab.
Efflorescence means water is moving through the masonry.
Rising or penetrating damp is getting into the masonry.
Clear, careful and fully certified – our process for every Mortdale property.
We visit your Mortdale 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 Mortdale NSW 2223 and the surrounding St George area. 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 Mortdale 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. Laundries are wet areas under AS 3740. Many older laundries have no membrane, so leaks from machines and tubs damage floors and neighbouring rooms.
Yes. We work for homeowners, landlords, builders, owner-builders, strata managers and businesses, and supply the certificates and warranties each of them needs.
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.
How a bathroom should be waterproofed, step by step, so it stays leak-free for years.
Read MoreThe quiet signs a laundry is leaking, and how to fix it properly.
Read MoreWhy balconies fail at the door sill, drain and balustrade, and how the right membrane stops it.
Read MoreLicensed waterproofers – free inspection, written quote and a 7-year warranty.
