You’ve Got a Cracked Pipe — Now What?

Discovering you have a cracked pipe is one of those homeowner moments that can quickly spiral from mild concern to full-blown stress. Visions of jackhammers tearing up your backyard, council permits, and a bill that rivals a kitchen renovation are enough to make anyone anxious. But before you go down that rabbit hole, it’s worth understanding your options, because in most cases, a cracked pipe doesn’t mean your property has to be turned into a construction site.

Here’s a practical guide to what you should do when you find out you’ve got a cracked pipe, and why pipe relining is almost always the best path forward.

Cracked pipe laying on the ground

Step 1: Don’t Ignore the Warning Signs

Cracked pipes rarely announce themselves dramatically. More often, the signs are subtle and easy to dismiss, until they get worse. Common indicators include:

• Persistent blocked or slow-draining pipes that keep coming back despite clearing
• Gurgling sounds from your toilet or drains
• Unpleasant sewage odours inside or outside your home
• Wet patches or unusually lush green patches in your yard (indicating leaking effluent)
• Subsidence or sinkholes forming in garden beds or near paving
• Noticeably higher water bills with no obvious explanation
• Cracks appearing in your home’s foundation or concrete slab

If you’re experiencing one or more of these, don’t wait. A small crack left untreated tends to grow, and the damage it causes to surrounding soil, structures, and landscaping compounds over time.

Step 2: Get a CCTV Drain Inspection

Before anyone can recommend a fix, you need to know exactly what you’re dealing with. The standard first step is a CCTV drain inspection, where a small waterproof camera is fed through your pipe to give a live, recorded view of what’s going on underground.

This inspection will reveal:

• The location and length of any cracks or fractures
• Whether tree roots have entered the pipe
• Joint displacements or pipe misalignment
• The overall condition of the surrounding pipework
• Whether the pipe has fully or partially collapsed

A CCTV inspection typically costs between $150 and $400 for a residential property in Sydney and takes less than an hour. It’s a small investment that ensures you’re not paying for guesswork — and a reputable plumber should provide you with recorded footage so you can see the damage yourself.

Step 3: Understand Why the Pipe Cracked

Knowing the cause helps you prevent the same problem from recurring. Common culprits include:

Tree root intrusion — roots naturally seek out moisture and will exploit even the tiniest joint gap, gradually cracking and spreading the pipe from within. This is one of the most common causes of pipe damage in Australian suburbs.

Ground movement — soil shifts with seasonal moisture changes, particularly in clay-heavy areas of Sydney. Over time, this movement puts stress on underground pipes, leading to cracks and joint displacement.

Age and material deterioration — older clay or concrete pipes become brittle over decades. Many homes built before the 1980s still have original pipework that is well past its useful life.

High pressure or water hammer — fluctuating water pressure can stress pipe walls over time, particularly at bends and joints.

Improper installation — pipes laid without adequate bedding or support can crack under the weight of soil above them.

Step 4: Consider Your Repair Options

Once you have a clear picture of the damage, you’ll generally be presented with two main repair paths.

Option A: Traditional Pipe Replacement (Excavation)

This involves digging up the ground above the damaged section, removing the old pipe, and laying new pipe in its place. It’s a proven method, but it comes with significant downsides:

• Disruptive and time-consuming — excavation can take several days and leaves your yard, driveway, or garden in a state of upheaval
• Expensive — labour, machinery, surface reinstatement (concrete, pavers, turf) and permit costs add up quickly
• Risky near structures — if the pipe runs under your home, garage, or a retaining wall, excavation becomes far more complicated and costly

Typical costs for excavation-based pipe replacement in Sydney range from $8,000 to $20,000+ depending on depth, length, access, and surface reinstatement requirements.

Option B: Pipe Relining (The Smarter Fix)

Pipe relining is a trenchless repair method that fixes the pipe from the inside, no digging required. A resin-saturated liner is inserted into the damaged pipe through an existing access point, inflated to press against the pipe wall, and cured hard. The result is a smooth, seamless new pipe within the old one, with a lifespan of 50 years or more.

Key advantages for cracked pipe scenarios specifically:

• Seals cracks permanently — the cured epoxy liner bridges and seals fractures, preventing further cracking and eliminating entry points for tree roots
• No surface damage — your garden, driveway, pavers, and lawn stay exactly as they are
• Structurally reinforces the pipe — the new liner adds rigidity to a weakened pipe section, preventing further deterioration
• Faster turnaround — most jobs are complete within a day, with the pipe back in service within hours of curing
• Cost-effective — particularly where excavation would involve concrete cutting, reinstatement, or work near structures

Typical costs for pipe relining in Sydney range from $500 to $1,000 per metre, with most standard residential jobs sitting between $3,000 and $8,000 well below the full cost of equivalent excavation work.

Step 5: Act Before It Becomes an Emergency

A cracked pipe is serious, but it’s manageable, provided you address it before it escalates. A crack that becomes a full collapse, or a slow leak that goes undetected for months and undermines your home’s foundations, is a significantly more expensive and complex problem to solve. The earlier you act, the more options you have and the lower the cost.

When Relining Isn’t the Answer

Pipe relining is suitable for the vast majority of residential cracked pipe scenarios, but there are exceptions. If a pipe has completely collapsed and lost its shape, there may not be enough structure remaining to support a liner. In these cases, spot excavation to restore pipe shape — followed by relining — is often still preferable to full replacement. A thorough CCTV assessment will make this clear before any work begins.

The Takeaway

A cracked pipe doesn’t have to mean weeks of disruption and a five-figure repair bill. In most cases, it means a CCTV inspection, a professional assessment, and a pipe relining job that has your drains running better than they have in years, often within a single day.

For Sydney homeowners, Sydney Drain Surgeons offer expert CCTV drain inspections and pipe relining solutions across the greater Sydney region. If you’re noticing the signs of a cracked or damaged pipe, they’re the people to call first — straightforward advice, no unnecessary upselling, and the experience to get it done right.