Bathroom Waterproofing · Sydney

Bathroom Waterproofing in Sydney

Waterproofing is the part of a bathroom you never see, and the part that matters most. Daylo Build installs compliant, properly cured waterproofing for new bathrooms, renovations and leak repairs, so water stays where it belongs.

24 yrs

Design, build & manufacturing experience

In-house

Custom joinery made to fit your space

NSW

Licensed & insured builders

Renovated bathroom with freestanding bath, terrazzo tiles and brass tapware by Daylo Build

About our waterproofing service

Get it right once, before the tiles go down

A failed membrane is one of the most expensive bathroom problems to fix. Leaks can lead to damp walls, mould, lifting tiles and damage to the rooms around and below. Most failures come down to poor preparation, missed detailing or rushed curing, not the product itself.

Our licensed NSW builders waterproof bathrooms to Australian Standard AS 3740 and the National Construction Code. We prepare the surfaces, detail every corner, hob and penetration, allow proper curing time, and test the result before tiling starts.

Why Daylo Build

Why homeowners choose us for bathroom waterproofing

01

Built to AS 3740

Wet areas are waterproofed to the Australian Standard for domestic wet areas and the National Construction Code.

02

Licensed & insured

Fully licensed NSW builders carry out and manage the work, so you deal with one accountable team.

03

Careful preparation

Correct falls, clean and sound substrates, and properly primed surfaces before any membrane is applied.

04

Detailing that prevents leaks

Corners, hobs, floor wastes, tap penetrations and door thresholds are sealed and reinforced, not skipped.

05

Proper curing and testing

We allow full curing between coats and test the finished waterproofing before any tiler starts work.

06

Part of your renovation

Waterproofing is scheduled with demolition, plumbing and tiling, so trades never work out of order.

What we offer

Our bathroom waterproofing services

Whether you are building a new bathroom, renovating, or fixing a leak, the same Daylo Build team plans, applies and checks the waterproofing.

New bathroom waterproofing

Full waterproofing for new bathrooms, ensuites and powder rooms with wet areas.

Renovation waterproofing

Waterproofing as part of a full bathroom renovation, coordinated with strip-out, plumbing and tiling.

Shower & shower recess

Floors, walls and niches waterproofed to the required heights and detailing.

Bath surrounds & hobs

Sealed and reinforced waterproofing around baths, hobs and upstands.

Floor waste & pipe penetrations

Careful sealing around floor wastes, taps, spouts and pipework.

Falls & screed preparation

Correct falls to the floor waste so water drains away rather than pooling.

Re-waterproofing failed bathrooms

Stripping back to the source of the problem and rebuilding the waterproofing correctly.

Laundry & ensuite waterproofing

The same standard applied to laundries, ensuites and other wet areas.

Apartment bathroom waterproofing

Careful, well-documented waterproofing for unit and apartment bathrooms.

How it works

Our waterproofing process

A careful, staged process where each step is completed and checked before the next one starts.

01

Inspection & assessment

We assess the bathroom, any existing leaks or damage, and what needs to be removed or repaired.

02

Strip-out & preparation

Old finishes are removed, substrates are prepared and correct falls to the floor waste are set.

03

Membrane application

Primer, reinforcing at corners and penetrations, then membrane coats applied to the required standard.

04

Curing & testing

We allow full curing time between coats, then check the finished waterproofing before tiling.

05

Tiling & handover

Tiling proceeds on a sound, tested surface, and we walk you through the completed work.

Where we work

Bathroom waterproofing across Sydney

Based in Parramatta, Daylo Build waterproofs bathrooms for homeowners across Sydney’s Inner West and the Hills District, including Parramatta, Castle Hill, Baulkham Hills, Kellyville, Epping, Ashfield, Strathfield and Burwood.

Waterproofing is most cost-effective as part of a renovation. See our bathroom design and renovation service, or ask about laundry renovations and whole-home renovations.

Recent Daylo Build projects

Recent projects across Sydney

Renovated bathroom with brass shower fittings, glass screen and vanity in West Ryde by Daylo Build
Renovated bathroom with walk-in shower, floating timber vanity and frameless glass in Lidcombe by Daylo Build
Renovated bathroom vanity and shower by Daylo Build

FAQs

Bathroom waterproofing FAQs

Is bathroom waterproofing required?
Yes. Waterproofing in bathrooms and other wet areas must comply with the National Construction Code and AS 3740. It protects your home and is essential to a bathroom that lasts.
How long does bathroom waterproofing take?
It depends on the size of the bathroom and the products used, because each coat needs time to cure before the next is applied. We plan this into your renovation schedule so tiling does not start until the membrane is ready.
What are the signs of a leaking bathroom?
Common signs include damp or stained walls and ceilings, mould or musty smells, lifting or cracked tiles, soft or swollen skirting, and unexplained rising water bills.
Can you fix a leaking shower without a full renovation?
Sometimes. It depends on where the leak is and what is behind the tiles. In many cases, a lasting fix means removing tiles and repairing the waterproofing at the source. We assess the bathroom first and explain your options.
What can go wrong with waterproofing?
Most failures come from poor preparation, missed corners or penetrations, wrong falls, or rushed curing. That is why we prepare, detail, cure and test each stage before moving on.
Which suburbs do you service?
We are based in Parramatta and service Sydney’s Inner West and Hills District, including Castle Hill, Baulkham Hills, Kellyville, Epping, Ashfield, Strathfield and Burwood.
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