Roofing Subcontractors and the Security of Payment Act — A Practical Guide

If you’re a roofing subcontractor in Australia, you’ve probably had the experience of chasing a head contractor or builder for payment. Weeks turn into months, excuses pile up, and your cash flow suffers. That’s exactly why the Security of Payment Act exists — to give tradies like you a formal, fast way to recover what you’re owed without waiting years for court action.

The catch? Most subcontractors don’t know it’s there, or they think it’s too complicated to use. It’s not. This guide walks you through how the Act works in practice and what you can actually do about an unpaid invoice.

What is the Security of Payment Act and how does it apply to you?

Each Australian state has its own version of Security of Payment legislation. In New South Wales, it’s the Security of Payment Act 1999. Queensland has the Building Industry Fairness (Security of Payment) Act 2017. Victoria has the Security of Payment Act 2002. Western Australia, South Australia, Tasmania, and the ACT all have their own versions too.

Here’s the practical bit: these Acts give you the legal right to lodge a payment claim if you’ve supplied labour, materials, or services to a construction project and haven’t been paid. You don’t have to wait for a dispute to be resolved, argue about quality, or prove the head contractor is solvent. You simply follow a process that leads to fast-track adjudication — a binding decision by an independent adjudicator within about 8–10 business days.

For roofing work, this matters enormously. Your invoice sits unpaid for three months. The head contractor says they’re waiting for the developer to pay them. You’re out of pocket. The SOP Act breaks that deadlock.

The core process: from claim to adjudication

The process varies slightly between states, but the bones are the same. Here’s how it typically flows:

1. Issue a payment claim — You send a formal notice to the head contractor claiming the unpaid amount, with supporting documents (invoice, timesheets, proof of work). The claim must be issued on or before the date you’d normally submit an invoice, or within a reasonable time after completing your work.
2. Respondent issues a payment schedule (or doesn’t) — The head contractor has roughly 10 business days to respond with a formal payment schedule showing what they’ll pay, when, and why (if they’re holding anything back). If they don’t respond, they’ve essentially admitted they owe you the full amount.
3. If they dispute the claim, you apply for adjudication — If their payment schedule holds back money or doesn’t arrive, you can apply for fast-track adjudication. An adjudicator hears both sides and makes a binding decision within 8–10 business days.
4. The adjudicator’s decision is enforceable — Even if the head contractor disagrees with the outcome, they must pay what the adjudicator decides within a few days. If they don’t, you can take enforcement action (including debt recovery through a court).

The beauty of this system is speed. Court action can take years. Adjudication takes weeks.

Common reasons roofing claims succeed — and why timing matters

Roofing subcontractors often have straightforward claims: you turned up, did the work, supplied materials, and submitted an invoice. The head contractor is simply holding onto your money. That’s exactly what the SOP Act was designed to address.

The key mistakes tradies make are:

• Missing the deadline — You have a limited window to issue a payment claim. Miss it, and you lose your SOP Act rights (though you can still sue, which takes much longer).
• Sloppy paperwork — If your claim is missing required information or isn’t formally issued (just texted or emailed casually), it can be rejected on a technicality.
• Waiting too long to act — Every day you wait is a day the money isn’t in your account. The sooner you lodge a claim, the sooner the process starts.
• Not understanding what you can claim — You can claim unpaid invoices for work performed, materials supplied, and variations. You usually can’t claim damages, interest, or costs beyond what the Act allows.

The legislation is specific about deadlines, document requirements, and service rules. Get them right, and your claim is almost impossible to dismiss on procedural grounds. Get them wrong, and the respondent will exploit every gap.

What happens next: enforcement and settlement

Once an adjudicator has made a decision, the respondent is legally obliged to pay. Many debtors choose to pay or settle rather than face the cost and exposure of further proceedings. The adjudicator’s decision is not the end of the story if the respondent refuses to pay — you can enforce it through the courts — but the deadline pressure often motivates payment before that step.

If you want to file a payment claim, the process doesn’t require a lawyer. PayClaim automates the paperwork and statutory requirements for a flat fee of AUD $79, so you don’t have to navigate the legislation yourself or risk missing a deadline.

The Security of Payment Act is there for you. It exists because lawmakers recognised that tradies shouldn’t have to bankroll construction projects. If you’re owed money for roofing work, you have a practical, legitimate path to recover it — fast.