A leaking roof after solar panel installation happens more often than you might think, and it’s usually due to poor installation.
The good news? It’s generally an easy fix and you’re installer will over this in their installation craftsmanship warranty period.
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Table of contents
1. Call Your Installer
If your roof is going to leak because of installation, you will generally notice it within the first few months of installation. Installation warranties last 5 years on average.
- Warranties vary, but most licensed installers offer between five and ten-year warranties on workmanship.
- Always open with a formal complaint, with photos ready to present.
- If your installer is unresponsive, don’t waste time – contact the relevant fair trading body or reach out to the Clean Energy Council.
2. Use a Waterproofing Company
A professional waterproofing company can provide a permanent fix by installing high-quality PVC sheet membranes designed for Australian conditions, such as Wolfin or Cosmofin. These membranes are suitable for a wide range of roof types — including flat, low-slope, steep-sloped, ballasted, insulated, curved, and even green roofs.Â
They’re ideal for both new builds and remedial work, offering long-term protection for residential, commercial, and strata buildings. Their flexibility and durability make them particularly effective on complex roof substrates and areas where different materials meet.
3. Book an Inspection with a Qualified Roofer
You won’t have a clear picture of the issue you’re dealing with until a licensed roofer carries out an inspection to pinpoint the source of the leak. It could be down to broken sealant, cracked tiles, rusted sheet joins, or poor flashing.Â
Ask for a written report and keep it with your records in case you need to make an insurance or warranty claim. If you suspect your installation was cheap or sloppy, ask about upgrading your flashing.
4. Replace or Reseal Mounting Points
When installing solar, the mounting points are one of the leading causes of a leaking roof, and handling these repairs could mean temporarily removing the panels while the leak is addressed. However, a roofing professional or solar panel maintenance tech can replace (or reseal) the rubber grommets, use flashing tape, or screw caps to remedy the problem.Â
5. Install a Solar Skirt
Dealing with pooling water or debris? A solar skirt, also known as a pigeon guard, can prevent clogs and blockages from debris, whether you have nesting birds or leaf buildup. If you have water pooling near the brackets, this can slowly erode your seals, and a solar skirt can help. This is particularly important if your home is shaded or the roof is a low-sloping metal roof.
6. File an Insurance Claim
If you’re dealing with severe damage and the leak has caused internal damage, whether it was mould or a ceiling collapse, you may find joy in filing a home insurance claim to cover the repairs. However, your insurer will require evidence that the damage was due to improper installation. So, you will need a roof report on hand as evidence. The insurer may also cover some or all of the costs of reinstallation once the repairs are complete.
7. Panel Removal & Tile Replacement
If you have a tiled roof with localised damage like cracks, the quickest, simplest solution is to replace the damaged tiles. However, this will require a roofer to handle the repairs and a solar technician to remove and reinstall the solar panel system; otherwise, you run the risk of voiding your warranty.Â
Summing Up - Quick Checklist
| Situation | What to Do | Why It Matters |
| You’ve spotted a leak | Check the mounting points first | These are common weak spots where water can get in |
| You suspect an installation error | Take photos and document the issue | Strong evidence helps with warranty claims |
| You need a permanent fix | Hire a professional waterproofing service | Stops current leaks and prevents future ones |
| You’re still under warranty | Avoid DIY repairs and contact your installer | Keeps your warranty valid and avoids extra costs |
You can take a proactive approach to solar panel ownership by taking steps to prevent leaks after the installation. In addition to choosing a well-reviewed, accredited installer and opting for flashing upgrades, you should also take photos of the roof penetrations post-install and ask for warranty documents upfront.
If your roof leaks after a solar installation, don’t panic. As long as you act fast, the problem is fixable with the right help. Whether you contact your installer under warranty or call a waterproofer, you have options. With a proactive approach, you can prevent leaks!Â
Are you battling a leak post-solar installation? Use GoSolarQuotes to compare solar maintenance experts and trusted waterproofers near you.
