If you’ve ever walked a residential tile roof on a sunny day—whether just admiring a neighbor’s new solar array or on a roof inspection for work—you know tile roofs are often billed as one of the safest, longest-lasting surfaces for solar panels. But when it comes to adding mounting brackets to that tile, a question I hear constantly from homeowners, solar installers, and even fellow industry folks is this: Are tile roof solar mounting brackets fire-resistant? As a supplier who’s worked on thousands of these projects over the past decade, I don’t just answer this with marketing fluff—I rely on real-world testing, building codes, and hands-on experience to break this down. Tile Roof Solar Mounting Brackets
First, let’s get one thing straight: mounting brackets themselves aren’t fire extinguishers. They’re structural components made to hold panels in place, transfer weight, and withstand wind and snow, not to stop a blaze from starting. That said, when we talk about fire resistance for these brackets, we’re talking about two specific things: how the brackets themselves perform when exposed to high heat, and how their design interacts with fire risks tied to solar installations on tile roofs. Most people don’t realize that tile roofs already have inherent fire resistance—clay and concrete tiles are non-combustible, per most building codes, which is why they’re common in wildfire-prone regions like California, Arizona, and parts of the Southwest. But adding metal brackets and electrical components can add a layer of fire risk if not designed right.
Let’s start with the materials we use for our brackets, since that’s the foundation of their performance. At our company, we manufacture all our tile roof solar mounting brackets from two primary materials: aluminum alloy 6005-T5 and 304 stainless steel. Why those two? Aluminum is lightweight, which is critical for tile roofs that can only support a certain additional load without structural upgrades, and it has a melting point of around 1,220°F. That’s way higher than the temperature of a typical household electrical fire, which usually tops out at around 1,100°F. Stainless steel, on the other hand, has an even higher melting point—around 2,750°F, so it’s the go-to for areas with extreme heat exposure or coastal climates where corrosion is a risk.
But here’s the catch: not all aluminum or stainless steel is created equal. Some cut-rate bracket suppliers will use lower-grade aluminum that has a much lower melting point, or even mix in other materials that can weaken when heated. We test every batch of our aluminum brackets to ensure they meet the American Society of Civil Engineers (ASCE) 7 standards for structural performance, and we run heat resistance tests to confirm they won’t warp or fail at temperatures below 1,200°F. For stainless steel, we use only marine-grade 304 for our most heavy-duty lines, which means it won’t corrode even after years of exposure to sun and moisture, and retains its strength even at high heat.
Now, beyond the material itself, the design of the bracket plays a huge role in fire safety. This is where a lot of amateur installers or cheap brackets go wrong, and it’s why so many people ask us about this topic. When you mount solar brackets to a tile roof, you have to drill through the tile to attach the bracket to the roof’s structural sheathing and rafters. The gap between the bracket and the tile is usually a small space—just enough to fit a sealant or flashing, which is there to prevent water leaks. But if that gap is too large, or if the bracket is mounted too close to the tile’s surface, that space can trap heat, or even become a channel for embers in the case of a wildfire to reach the roof’s underlayment or attic space.
That’s why our brackets are designed with a specific standoff height—usually between 1.5 and 2 inches, depending on the tile type (clay vs. concrete, flat vs. interlocking). This standoff does two key things for fire resistance: first, it creates an air gap between the bracket and the tile, which allows heat to dissipate naturally, rather than getting trapped between the metal and the roof surface. Second, for wildfire-prone areas, that gap prevents embers from getting wedged between the bracket and the tile—something that can happen if the bracket is pressed too tight to the tile’s surface. We also add a rounded edge to all our bracket feet, which sits flush against the tile without creating sharp corners that could tear the sealant or create small gaps where embers could get stuck.
Another big part of fire safety for solar brackets is their compatibility with tile roof flashings and underlayment. Most tile roofs have a waterproof underlayment layer under the tiles, and the flashing around mounting holes is critical to keeping that underlayment intact. If a bracket is made from a material that corrodes over time, it can scratch or pierce the flashing, which exposes the underlayment to water, but that’s not a fire risk—wait, but if the underlayment is damaged, that could be a path for fire to spread from the attic, right? No, most roof underlayments for tile roofs are made from non-combustible materials like asphalt-saturated felt or synthetic rubber, but some lower-cost underlayments can be combustible. Our brackets are coated with a powder finish that’s resistant to scratches, so they won’t tear the flashing during installation or over the life of the system. We also work with solar installers to recommend the right flashing for each bracket model, specifically designed for tile roofs, to ensure no gaps are left that could allow fire to spread.
Let’s talk about real-world fire incidents to put this in perspective. I remember a case a few years ago in Southern California where a homeowner’s solar array had a small electrical fire in the inverter area. The brackets mounted to their clay tile roof were unharmed—they didn’t warp, melt, or transfer heat to the tile, because the aluminum brackets had a high enough melting point, and the air gap between the bracket and the tile kept the heat from reaching the roof surface. The fire was contained to the inverter, and the tile roof had zero damage. Another example: a wildfire in Northern Arizona a few years back, where a neighborhood of tile roof homes with solar arrays survived with minimal damage, while neighboring asphalt shingle homes burned. The brackets on the tile roofs didn’t ignite, because their high melting point meant they didn’t catch fire when embers hit them, and the air gap prevented embers from getting trapped against the tile where they could start a fire.
That said, there are caveats, and it’s important to be honest about them. First, brackets aren’t a replacement for proper electrical safety. If wiring is poorly installed, or inverters are faulty, that can cause a fire regardless of the bracket’s material. Second, brackets with lower-grade materials—like aluminum that’s not heat-treated, or brackets made from plastic or composite materials (yes, some cheap brands use these!)—are not fire-resistant. Composite brackets might seem lighter, but most have a melting point of less than 500°F, which means they’ll melt at the first sign of heat, and can transfer that heat to the tile or roofing material. That’s why we never offer composite brackets for tile roofs, even though some competitors do—because we’ve seen the risks firsthand.
Third, installation quality matters as much as the bracket itself. A well-made bracket is useless if an installer cuts corners by not sealing the mounting holes properly, or by mounting the bracket too tight to the tile. We offer training programs for all the installers who use our brackets, because we want them to know how to mount each bracket correctly for maximum fire safety and water protection. For example, when mounting to interlocking clay tiles, you have to drill the mounting hole in the flat part of the tile, not the curved edge, and use a custom flash that fits the tile’s shape to prevent gaps. If that’s not done, embers can get into the hole, and that’s a fire risk that has nothing to do with the bracket’s material.
Now, how do building codes factor into this? Most regions that require fire-resistant roofing materials for high-risk areas have specific standards for solar mounting brackets. For example, the California Building Code (CBC) requires that all solar components installed on tile roofs be made of non-combustible materials, and that brackets have a standoff height of at least 1 inch to allow air circulation. Our brackets meet or exceed all CBC standards, and we also test our products to the Underwriters Laboratories (UL) 2703 standard, which covers the safety of mounting systems for solar panels. UL 2703 includes fire resistance tests, including exposure to high heat and simulated wildfire embers, and our brackets pass with flying colors because of their material and design.
I’ve talked to a lot of homeowners who are hesitant to add solar to their tile roofs because they’re worried about fire risk, and that’s a valid concern—wildfires are a growing threat, and no one wants to make their home more vulnerable. But over 10 years in this industry, I can tell you that the right tile roof solar mounting brackets are not just safe—they can actually enhance the safety of a tile roof, because they’re made from non-combustible materials and designed to resist heat and embers, unlike the asphalt shingles that many solar arrays are also mounted on.
That said, if you’re in the market for brackets for your tile roof, don’t just buy the cheapest option. Ask about the material grade, the heat resistance testing, and whether the brackets meet local building codes. A good supplier will be able to provide you with test reports and code compliance certificates, not just a list of features. At our company, we don’t cut corners on materials or testing because our reputation is built on brackets that last, perform, and keep homes safe.
If you’re a solar installer looking for reliable, fire-resistant tile roof solar mounting brackets for your next project, or a homeowner who wants to learn more about how our brackets can fit your roof, don’t hesitate to reach out to our team. We can send you sample brackets, share our test reports, and work with you to find the right solution for your specific tile type and location. Whether you’re working on a small residential project or a large commercial array, we have brackets designed to meet your needs while keeping safety at the forefront.
Off-Grid Solar Power System References
- American Society of Civil Engineers (ASCE). (2022). ASCE 7-22: Minimum Design Loads and Associated Criteria for Buildings and Other Structures.
- Underwriters Laboratories (UL). (2021). UL 2703: Safety Standard for Mounting Systems for Photovoltaic Modules.
- International Code Council (ICC). (2023). International Building Code (IBC) Section 1505: Fire-Resistant Construction.
- California Building Standards Commission. (2022). California Building Code (CBC) Section 3107: Roof Coverings.
- National Fire Protection Association (NFPA). (2021). NFPA 70: National Electrical Code (NEC) Article 690: Solar Photovoltaic Systems.
Xiamen D.T. Multi Tech Co., Ltd.
Xiamen D.T. Multi Tech Co., Ltd. is one of the most professional tile roof solar mounting brackets manufacturers and suppliers in China, we’re featured by quality products and good service. Please rest assured to wholesale cheap tile roof solar mounting brackets from our factory.
Address: No.102-10, Dongdu Road, Huli District, Xiamen, Fujian Province, China.
E-mail: deven@deven-tina.com
WebSite: https://www.dtsolarpower.com/
