Termites and Solar Panels: What Bay Area Homeowners Should Know
- Jameson Elam
- 16 minutes ago
- 6 min read
About the Author: Jameson Elam is the owner and operator of Good Sense Termite, serving Alameda, Santa Clara, San Mateo, and Santa Cruz counties. With over 14 years of hands-on experience in the termite control industry, Jameson specializes in thorough inspections, accurate diagnostics, and long-term solutions tailored to California homes. His deep knowledge of local termite behavior and building structures has made Good Sense Termite a trusted name for homeowners and real estate professionals alike.
Solar panels are everywhere in the Bay Area. Santa Clara County has one of the highest rates of residential solar adoption in California, and if you don't have panels on your roof yet, there's a good chance your neighbors do. Solar is a smart investment — but it creates some specific considerations when it comes to termite activity that most homeowners and solar installers never discuss.
Here's what Bay Area homeowners with solar panels need to know about termites.
How Solar Panels Create New Termite Vulnerabilities
Solar panels themselves are not made of wood and are not a food source for termites. But the installation process and the presence of panels on your roof create conditions and access points that can affect termite risk in ways that weren't present before.
Roof Penetrations Create Entry Points
Every solar installation involves penetrating the roof to mount racking systems and run wiring. These penetrations — if not properly sealed — create gaps in the roof envelope that drywood termite swarmers can exploit during peak swarming season. A swarmer that finds its way through an improperly sealed roof penetration can establish a colony in the attic framing below with no other entry point required.
This doesn't mean solar installations routinely cause termite infestations — good installers seal penetrations properly. But it does mean that roof penetrations are worth checking as part of your annual termite inspection, particularly in the years following a solar installation.
Panels Create Dark, Sheltered Spaces
The gap between solar panels and the roof surface creates a sheltered, dark microenvironment that some pests find attractive. While this is more commonly associated with birds, rodents, and wasps than with termites specifically, the presence of nesting debris, moisture accumulation, and organic material in the panel gap can create conditions that are broadly conducive to pest activity near the roof.
Panels Can Obscure Roof Inspection
This is perhaps the most significant termite-related implication of solar panels: they cover portions of the roof surface, making visual inspection of those areas more difficult. Roof condition, fascia boards, eaves, and any exposed wood under or around the panel array may be harder for both homeowners and inspectors to assess.
Wiring Routes Can Create New Access Points
Solar wiring typically runs from the roof through conduit into the attic or down the exterior of the home. Any gap around conduit penetrations — into the attic, into wall cavities, or through the fascia — is a potential termite entry point. The quality of sealing around these penetrations varies by installer.
What to Check If You Have Solar Panels
Roof penetrations and conduit entry points. Visually inspect the points where racking mounts penetrate the roof and where conduit enters the attic or home exterior. Look for any gaps, cracked sealant, or areas where the seal has deteriorated. If you're not comfortable on the roof, ask your termite inspector or solar company to assess these points.
Attic framing near the roofline. During your annual termite inspection, specifically ask the inspector to pay attention to attic framing in the areas beneath your solar array. This is where any swarmers that entered through roof penetrations would most likely establish a colony.
Fascia and eaves around the panel perimeter. The edges of the solar array — where panels end and exposed roofing materials begin — are worth checking for signs of drywood termite activity: frass accumulation, kick-out holes, or soft spots in wood trim.
The underside of the roof deck visible from the attic. If your attic inspection includes areas beneath the solar array, the inspector can assess the underside of the roof sheathing for any signs of moisture intrusion or pest activity that might be harder to detect from the exterior with panels in place.
What to Do Before a Solar Installation
If you're planning to add solar panels to your home and haven't had a recent termite inspection, scheduling one before installation is genuinely worthwhile — for two reasons:
Catch any existing attic activity before it's harder to access. Solar panels on the roof don't make attic inspections impossible, but they do add complexity to assessing roof-level conditions from the outside. Knowing your attic framing is clear before panels go on gives you a clean baseline.
Document your roof condition before penetrations are made. A pre-installation termite inspection gives you documented evidence of your roof and attic condition before any penetrations are created. If termite activity is ever discovered near a roof penetration in the future, having pre-installation documentation can be important for insurance or warranty purposes.
What to Do After a Solar Installation
Schedule an inspection within the first year. A post-installation inspection specifically checks that roof penetrations are properly sealed and that no new entry points have inadvertently been created. This is a simple, low-cost step that provides real peace of mind.
Add solar penetrations to your annual inspection checklist. Let your termite inspector know you have solar panels and ask them to specifically assess roof penetration sealing as part of their annual inspection. This takes only a few minutes of additional attention but ensures nothing is overlooked.
Notify your termite company before any panel additions or modifications. If you add more panels, replace your system, or modify the installation in any way, let your termite company know — particularly if new roof penetrations will be created.
A Note on Solar Company Responsibility
If you discover termite activity near a roof penetration created during a solar installation — particularly a recent one — the question of responsibility can be complicated. The termite infestation itself is a pest control matter, but if improperly sealed penetrations contributed to the problem, that may be a workmanship issue to discuss with your solar installer.
Documenting roof and attic condition before and after installation is the best way to protect yourself if this situation arises.
The Bottom Line
Solar panels are a smart investment for Bay Area homeowners — and with a little attention, they don't have to create termite vulnerabilities. The key is ensuring roof penetrations are properly sealed at installation, including solar-adjacent areas in your annual termite inspection, and scheduling a pre- or post-installation inspection if you're adding panels soon.
If you have solar panels and haven't had a recent termite inspection — or you're planning an installation and want to get a baseline assessment first — we're here to help. Call or text Good Sense Termite at (408) 418-9152 or request your free inspection online.
It's just good sense.
Frequently Asked Questions: Termites and Solar Panels
Can termites damage solar panels?
Solar panels themselves are not made of wood and are not susceptible to termite damage. However, the roof penetrations, wiring conduit, and structural elements around a solar installation can create entry points for drywood termites if not properly sealed. The panels themselves are safe; it's the surrounding wood structures that warrant attention.
Do solar panels attract termites?
Solar panels don't directly attract termites. However, the sheltered gap between panels and the roof surface can attract various pests, and improperly sealed roof penetrations can create entry points for drywood termite swarmers during swarming season. Proper sealing at installation and regular inspection of penetration points minimizes this risk.
Should I get a termite inspection before installing solar panels?
Yes, particularly if you haven't had a recent inspection. A pre-installation inspection gives you a documented baseline of your attic and roof condition before any penetrations are made, which can be valuable if termite activity is ever discovered near installation points in the future. It also catches any existing attic activity before panels make roof-level assessment more complex.
Can a termite inspector assess areas under solar panels?
A termite inspector can assess the attic framing and roof sheathing from inside the attic, including areas beneath the solar array. Visual inspection of the roof surface under panels from the exterior is limited, which is one reason why attic-level inspection becomes more important for solar homes. Roof penetration sealing can typically be checked from the exterior around panel edges.
What should I do if I find termite activity near my solar installation?
Contact a licensed termite company for an inspection to assess the extent and location of the activity. If the activity appears to be centered around a roof penetration, document the findings carefully and consider discussing with your solar installer whether the penetration was properly sealed. Addressing the termite issue with a licensed company is the first priority regardless of the source.
How often should solar homeowners get termite inspections?
The same annual recommendation applies to solar homeowners as to all Bay Area homeowners — once a year, with specific attention to roof penetration sealing and attic framing beneath the array. If your solar installation was recent, a post-installation inspection within the first year is also recommended.
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