Waterproofers and Unpaid Invoices: A Recovery Roadmap

You’ve finished the job. The waterproofing is done, the site’s clean, and you’ve sent the invoice. Then nothing. Weeks pass. Your cash flow takes a hit. Your crew can’t get paid.

If you’re a waterproofer or subcontractor owed money in Australia, you’re not without options. The Security of Payment legislation in every state exists partly for tradies like you—to give you a fast, formal way to recover what you’re owed without waiting years for court. This roadmap walks you through what to do next.

Understand Your Legal Right to Claim

First, the good news: Australian building work is protected by state-based Security of Payment Acts. In NSW, it’s the Security of Payment Act 1999. In Queensland, the Building Industry Fairness (Security of Payment) Act 2017. Victoria has the Security of Payment Act 2002. Western Australia, South Australia, Tasmania—all have versions.

These laws exist because politicians and industry groups recognised that tradies get burned. A lot. When you’re a subcontractor owed money, you can’t just wait for bankruptcy court—you need cash now to pay your own crew and suppliers.

Under these Acts, you have a statutory right to issue a payment claim for work completed. This is not a polite email. It’s a formal legal document that triggers a strict timeline for your head contractor or builder to respond. They can’t ignore it. They have to either pay or issue a payment schedule setting out what they’re disputing and when they’ll pay the rest.

If they don’t respond properly, or if you disagree with their payment schedule, you can escalate to adjudication—a fast, binding process that sits between you and expensive court litigation.

Check You’re Eligible, Then Document Everything

Before you lodge a claim, confirm you’re covered. The Acts apply to construction work, including waterproofing, done under a construction contract. If you’ve done the work and the head contractor or builder owes you, you’re likely eligible.

Eligibility can get murky if you’re owed by a sub-subcontractor (not the head contractor) or if there’s been a dispute about whether the work is defective. That’s where the rules tighten. But in a straightforward scenario—you did the work, they owe you—the Acts protect you.

Now gather everything:

• Your original contract or quote (even an email confirming scope and price works)
• Photos or reports showing work completed
• Your invoice with the date and amount
• Emails, text messages, or site notes proving the work was done
• Any previous correspondence about payment
• Proof of delivery (if relevant)

You don’t need a perfect case. You need enough evidence to show a reasonable adjudicator that you did the work and the amount claimed is genuine. Most disputes aren’t about whether work happened—they’re about timing, quality niggles, or the builder’s cash flow problems. Be honest about what you did, when, and what you charged.

Issue a Payment Claim Properly

This is where many tradies stumble. A payment claim under the Security of Payment Acts isn’t just “please pay me.” It has to follow the rules in the legislation for your state, or it can be rejected on a technicality.

Here’s what typically needs to be in it:

1. Identification of the construction contract (date, parties, scope)
2. The period of work you’re claiming for (e.g. “November 2024”)
3. Description of the work done in that period
4. The amount claimed, broken down if possible
5. The date the claim is issued
6. A statement that it’s a payment claim under the relevant Act

The recipient then has a fixed deadline—usually 10 business days in NSW, similar in other states—to issue a payment schedule. If they don’t, they can’t later defend an adjudication on the basis of disputes they didn’t raise on time.

Getting this right matters. If your claim is defective, the builder or head contractor can reject it outright, and you’ll have to start again. That’s why many tradies now use a service like PayClaim to file a payment claim—it walks you through the statutory requirements step by step and produces a document that meets your state’s rules.

Know What Happens Next

Once you’ve issued a valid claim, you’re in the system. The builder or head contractor will either:

• Pay you in full. Problem solved.
• Pay part and dispute part, issuing a payment schedule that explains why. You then decide whether to accept or escalate.
• Ignore it or issue a defective payment schedule. This puts them in breach and strengthens your hand in adjudication.

If you don’t agree with their payment schedule—or they don’t issue one—you can apply for adjudication. An adjudicator (an independent construction expert) will review your claim, their response, and make a binding decision on what they must pay you within a few weeks. It’s not court, it’s not cheap, but it’s fast and formal. Many builders choose to pay or settle rather than face it.

Adjudication isn’t a guarantee you’ll win. But it forces the issue into the open and applies real legal pressure. That’s the point.

Act Now, Not Later

The biggest mistake tradies make is waiting. They hope the money will come. It often doesn’t. The longer you wait, the further back in the payment queue you go, and the weaker your position becomes.

If you’re owed money for work completed and the invoice is overdue, issue a payment claim now. You have nothing to lose by following the process. You might recover the money faster than you think. And even if it takes adjudication, at least you’re moving forward instead of stuck.

Australia’s Security of Payment laws were built with you in mind. Use them.