Updated on May 20, 2026
You’ve decided to go solar. But when your installer mentions your terracotta tile roof, things can get complicated. Suddenly, you hear about extra days, replacement tiles, and more labour. What seemed simple now feels a bit overwhelming.
It’s normal to feel unsure. Terracotta tiles are more delicate than concrete or metal roofs, and not every installer has the right experience.
At PSC Energy, we regularly install solar on terracotta tiles. We know the process inside and out, from handling different tile types and grinding to preparing replacement tiles and making sure everything stays waterproof. We also understand the questions homeowners have when they find out their roof needs extra attention.
In this article, you’ll learn about the following:
- Can You Put Solar on Terracotta Tiles?
- How Solar Installation on Terracotta Tiles Works
- What Your Installer Will Be Assessing
- The Three Types of Terracotta Tiles and Why They Matter for Your Solar Installation
- What Affects Your Terracotta Roof Solar Installation Timeline and Cost
- What to Look for in an Installer for a Terracotta Tile Solar Installation
- FAQ: Solar Panels on Terracotta Tile Roofs
By the end of this article, you’ll know how solar panels are installed on terracotta tile roofs, what can affect your installation timeline and cost, and how to choose an installer who really knows what they’re doing.
Can You Put Solar on Terracotta Tiles?
Yes, you can put solar panels on terracotta tile roofs. But these roofs need more care, extra time, and more experience than metal or concrete tile roofs.
Terracotta tiles are harder to walk on without causing damage, more likely to break when removed, and more sensitive to the pressure from roof brackets. This doesn’t make solar impossible, it just means the process takes more care.
An installer with real experience on tiled roofs can do the job well and prevent lasting damage. Experience matters. This isn’t a job for someone new to terracotta tiles.
How Solar Installation on Terracotta Tiles Works
There’s a clear process for installing solar on terracotta tiles. Here’s what you can expect from start to finish:
- Step 1: Roof evaluation. Before installation day, someone from the sales team visits your home to check the roof. They look at the tile type, the roof’s condition, and anything else that could affect the timeline. This information is shared with the installation crew so they come prepared.
- Step 2: Planning the layout. On installation day, the installers decide where to attach the mounting system. They find the roof trusses under the tiles and figure out which tiles need to be removed to reach them.
- Step 3: Replacement tiles on site. Some tiles will crack during installation, which is normal since terracotta is more fragile than other roofing materials. We recommend having at least 20 replacement tiles ready. Your installer should tell you this in advance.
- Step 4: Grinding the underside of affected tiles. When a bracket goes under a tile, the tile needs to sit flat, not raised. Even a small lift of 10 to 15 millimetres can cause cracks and let water in over time. Installers grind down the underside of each tile so it sits flat over the bracket. Done properly, this step helps prevent leaks for years.
- Step 5: Fitting the mounting system. Once the tiles are ready, installers attach the brackets to the roof trusses, fix the rails to the brackets, and mount the solar panels onto the rails.
- Step 6: Wiring and waterproofing. The wiring runs from the panels into your home through a roof tile. Installers use a 28mm hole saw to make the hole, run a 25mm conduit through it, and seal it with Sikaflex to keep it watertight. They also add lead flashing under nearby tiles to direct water away from the entry point. This flashing is called a Dektite.
If you’re interested in learning a bit more about what our team does, you might want to check out the following article titled, What to Expect on the Day of Your Solar Installation.
What Your Installer Will Be Assessing
Before and during installation, a careful installer checks several things that can affect how the job turns out.
The age and condition of your roof matter. Older terracotta tiles are more brittle. A roof that’s seen years of sun and weather is more likely to crack than a newer one. If your roof is older, your installer might suggest repairs first or plan for extra replacement tiles.
The type of tile is the biggest factor. Not all terracotta tiles are the same. The kind you have affects how carefully installers need to work, how much grinding is needed, and how long the job will take.
The complexity of your roof also matters:
- Hips and valleys make it harder for installers to access roof trusses.
- A complex roof shape limits where panels can be placed.
- More roof features mean more time on site.
Looks matter, too. Many homeowners with terracotta roofs care about their home’s appearance, which is often why they chose these tiles. We use all-black solar panels and black mounting hardware for a clean, uniform look that suits a tiled roof.
The Three Types of Terracotta Tiles and Why They Matter for Your Solar Installation
The type of terracotta tiles on your roof is the main factor in how your installation will go. In Australia, there are usually three main types.
French Terracotta
French terracotta tiles are the most durable of the three types. They interlock, so they’re sturdier to walk on and easier to work with.
Sometimes, French terracotta tiles don’t need to be ground down because their design lets the tile sit naturally over the bracket. If you have French terracotta, your installation will likely go more smoothly and quickly than with other tile types.
Swiss Terracotta
Swiss terracotta tiles are more fragile than French terracotta. They need more careful grinding on the underside of each tile. Installers also have to walk gently, stepping only on the toe; the rounded front edge of each tile where it’s strongest.
These two factors slow the crew down. Depending on your roof’s size and complexity, Swiss terracotta often adds an extra day to the installation.
Terracotta Slate
Terracotta slate tiles are the most fragile of the three types. They crack easily, so installers have to work slowly and carefully. These tiles are usually longer than other terracotta tiles, so a different type of mounting bracket is often needed.
Key points for terracotta slate:
- Requires the most careful movement across the roof.
- More replacement tiles are likely to be needed.
- A different bracket type is usually required to accommodate the tile length.
- Almost always adds at least one full day to the installation.
If you’re interested in learning a bit more about the importance of your roof type and how it affects your solar installation, you might want to check out the following article titled, How Does Your Roof Affect Your Installation?
What Affects Your Terracotta Roof Solar Installation Timeline and Cost
Several factors work together to determine how long your installation takes and what it costs.
As mentioned earlier, tile type is the biggest factor. Terracotta slate takes the most time, French terracotta is the fastest, and Swiss terracotta falls in the middle.
The next biggest factor is how complex your roof is. Roofs with lots of hips, valleys, or changes in slope take longer to work on. Installers need extra time to find trusses, plan the panel layout, and move safely around the roof.
Other factors include:
- Age and condition of tiles: older or weathered tiles require more care and more replacements.
- Rafter placement: the position of the underlying roof structure limits where brackets can go, which affects the panel layout and how long it takes to map out on the day.
- System size: a larger solar system means more panels, more brackets, more wiring, and more time on site.
- Roof height and pitch: a steep or high roof takes longer to access and work on safely.
Talk openly with your installer about all these factors before you decide. If a quote doesn’t take your roof’s complexity into account, it might change on installation day.
What to Look for in an Installer for a Terracotta Tile Solar Installation
Not all solar installers have real experience with terracotta tile roofs. Some might try the job, run into problems, and leave you with cracked tiles and no solution. Here’s what you should ask before signing any agreement:
- Ask directly: how many terracotta tile installations have you completed? A confident, specific answer is a good sign. A vague reassurance is not.
- Ask about their tile grinding process. If they look blank, move on.
- Confirm they will advise you on replacement tiles. If this doesn’t come up in the conversation, raise it yourself. You should know how many to have ready before installation day.
- Ask how they waterproof the cable penetration. The answer should include sealant and lead flashing. Both.
- Check their workmanship warranty. The solar panel and inverter warranties cover the equipment. Your installer’s workmanship warranty covers the quality of the installation itself, including all roof penetrations. Make sure it exists and that it covers roof damage.
An experienced installer will be happy to answer these questions. They’ve dealt with them many times before.
If you’d like to learn more about that, we suggest you check out the following article titled, How Long Will My Solar Install Take?
Now You’re Shingle and Ready to Mingle!
You can definitely install solar on a terracotta tile roof. Success comes from good planning, skilled installers, and open conversations with your installer before the work begins.
At PSC Energy, we’ve worked with all three types of terracotta tile roofs. We bring replacement tiles, grind every bracket properly, seal and flash every opening, and use all-black hardware so your system looks great and works well.
If you’re ready for solar on your terracotta roof, we’re here to help. It’s what we do.
If you’re interested in learning more about the changes to the federal battery rebate, you might want to check out the following article titled, Is the Federal Battery Rebate Still Available?
FAQ: Solar Panels on Terracotta Tile Roofs
Can solar panels be installed on terracotta tile roofs?
Yes. Solar panels can be installed on terracotta tile roofs. The process takes more care and time than a metal or concrete roof, but it is a well-understood installation type for experienced solar installers across Australia.
Will installing solar panels damage my terracotta tiles?
Some tiles will crack during installation. This is normal and expected. A prepared installer brings replacement tiles to the site and accounts for breakage in the plan. The tile-grinding process, when done correctly, also prevents cracking in the years after installation.
How long does a solar installation take on a terracotta tile roof?
A simple roof with French terracotta tiles might be completed in a single day. A more complex roof, or one with Swiss terracotta or terracotta slate tiles, will often take two days or more. Your installer should give you a clear timeline after completing the initial site assessment.
Does the type of terracotta tile affect my solar installation cost?
Yes. More fragile tile types require more time, more careful handling, and more replacement tiles, all of which increase the cost of the installation. Swiss terracotta and terracotta slate are the most time-intensive. French terracotta is the most straightforward.
What is the tile grinding process in a terracotta tile solar installation?
When a mounting bracket is under a tile, the tile needs to sit flat rather than slightly raised. Even a small rise of 10 to 15 millimetres can cause cracking over time. Installers grind down the underside of each affected tile so it sits flush over the bracket. This step is one of the clearest indicators of whether an installer knows what they’re doing on a tiled roof.
Is it more expensive to install solar on a terracotta tile roof than on other roof types?
It can be. The additional time, care, and replacement tiles required for a terracotta tile solar installation generally increase the total cost compared to a metal or concrete tile roof. Your installer should be upfront about this from the very first conversation.
