What to Check Before Reinstalling Solar After Roof Work?

If you’re about to have roof work done — whether repairs, a full restoration, or replacement — knowing what to check before reinstalling your solar panels is crucial. It’s about safety, saving money, keeping warranties valid, avoiding legal issues, and getting the best value long-term. Here’s your step-by-step guide.

1. Plan the Sequence: Roof First, Solar Later

Reason 1: Avoid Double Work Solar panels last 25 years or more, but roofs often need replacing sooner. Install panels only after the roof work is fully completed to avoid costly removal and reinstallation. According to roofing experts across Victoria, postponing solar installation until after roof work is best practice.

Reason 2: Preserve Warranties Roof and solar warranties can be invalidated if solar equipment is installed before roof integrity is confirmed. Start with the roof to ensure both investments are protected.

2. Evaluate Cost and Scheduling

1. Removal & Reinstallation Costs Licensed solar electricians charge around $85–100 + GST per panel, depending on location and system complexity. Expect downtime while panels are off-grid — budget for a few days to a week of full reliance on grid electricity.

2. Ideal Timeline Roof restorations often require 3–5 days of curing before solar can be safely reinstalled.

3. Ensure Proper Licences & Accreditation

Qualified Professionals Only

By law, solar removal/reinstallation must be carried out by a licensed electrician with solar accreditation (Solar Accreditation Australia) and an unrestricted electrical licence. Roofers are not permitted to remove panels themselves.

4. Pre‑Reinstallation Inspection Checklist

Before putting panels back on, do a thorough check:

1. Roof Surface and Flashings

Ensure roof is fully restored, watertight, and free from damage.
Confirm flashing and penetrations are sealed correctly to prevent leaks.
Inspect for broken tiles or cracked metal beneath where panels will be placed.

2. Mounting Hardware and Roof Integrity

Rails should remain securely fastened—if removed, reinstall or upgrade mounting components.
Check roof fixings and structure for corrosion or weakness in compliance with AS/NZS 3000.

3. Electrical Safety and Certification

Inverter, isolator switches, wiring and connectors must be inspected by a licensed electrician.
Conduct anti‑islanding tests and confirm new electrical work aligns with national standards.

4. System Testing and Performance Checks

After reconnection, the installer should test performance, run the inverter through start/stop cycles, and check monitoring systems.
Accredited installers must sign off for STC eligibility and grid connection.

5. Stay Compliant & Up to Date

National Rules and Standards
Installers must comply with Clean Energy Regulator guidelines, Safe Work Australia for rooftop safety, and Australian wiring rules (AS/NZS 3000).
Local and Heritage Considerations
If your property is in a heritage zone or subject to planning restrictions, you may need approval for visible panels. Homeowners in heritage-listed areas may require additional approvals before visible solar panels can be installed.

6. Why This Matters for You

Safety: Ensures no leaks, no electrical faults, and lower risk of fire or shock.
Value: Saves money by avoiding repeated labour, material damage, and lost warranties.
Performance: Maintains reliable solar output with minimal downtime.
Compliance: Prevents legal trouble with building codes and incentive programmes.

7. Quick Reference Checklist

Step	Task
1	Confirm roof work fully completed & cured
2	Engage licensed electrician & SAA accredited installer
3	Inspect roof, flashings, mounting rails
4	Perform anti‑islanding & electrical safety tests
5	Reconnect inverter & re‑commission system
6	Keep signed compliance paperwork & STC records
7	Schedule annual safety and performance check ‑ advised by CER

In Summary

Reinstalling solar panels after roof work isn’t just re‑lifting them back on. It’s a critical process combining safety, cost efficiency, compliance, and optimal solar output.

Before reinstalling, make sure your roof is fully ready — sealed, safe, dry and complete — and that you’re working with fully licensed, SAA accredited installer professionals.

Enjoy peace of mind: a leak‑free roof with solar working at its best for years.