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Can Water Damage a Home's Solar Panel Installation?

Last updated October 31, 2026

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The short answer

How Water Reaches the Installation

Water typically affects solar installations indirectly. While panels are sealed, water can seep underneath them if the roof membrane is compromised. It can pool around mounting brackets and penetrate through roof penetrations made for wiring. In areas with a humid subtropical climate, driving rain and wind-driven moisture from storms are common threats.

Flooding from ground level can also cause problems. Water may rise high enough to submerge electrical inverters or combiner boxes located on exterior walls. Even if the panels are high, the supporting infrastructure on the ground or lower roof areas remains vulnerable to water intrusion from severe weather events.

Primary Risks to the System

The electrical components are most at risk from water damage. Water infiltration can cause short circuits in wiring, connectors, or microinverters. This poses a fire hazard and can permanently disable parts of your system. Corrosion on metal racking and brackets can also weaken the structural support over time.

Water damage to the roof itself is a major concern. Leaks under the panels can rot roof decking and damage attic insulation. This hidden damage may go unnoticed until it becomes extensive, requiring significant roof repairs that necessitate removing the solar array.

  • Electrical shorts and fire hazards from wet wiring.
  • Corrosion of aluminum racking and steel fasteners.
  • Roof deck rot and structural compromise underneath panels.
  • Damage to inverters, combiners, or monitoring equipment.
  • Voided manufacturer warranties due to improper water exposure.
  • Potential for mold growth in soaked roof materials.

Immediate Steps After Water Exposure

Your first action should be safety. If there is any chance water has contacted the electrical system, shut off the solar array using the rapid shutdown switch or AC disconnect, typically located near the main service panel. Do not attempt to handle wet components yourself due to the risk of electrocution.

Next, document the situation for potential insurance purposes. Take clear photos and videos of any visible water, stains, or damage around the panels, roof, and associated equipment. This helps create a record of the event. Then, contact a qualified electrician to assess the electrical safety of the installation.

Professional Inspection and Repair

A thorough inspection by qualified professionals is essential after water exposure. A roofer should check the integrity of the roof deck and flashing under the panels. An electrician must inspect all wiring, connectors, and inverters for moisture damage and safety.

Local water damage pros can address any resultant interior water damage or mold. They perform inspection and documentation to detail the full scope. Repairs may involve drying the structure, replacing roof sections, and having an electrician re-certify the solar electrical system before re-energizing it.

Insurance and Long-Term Considerations

Homeowners insurance may cover sudden, accidental water damage to the installation, like damage from a storm. However, damage from long-term leaks or poor installation might be contested. Policies vary, and your insurer decides what is covered. Review your policy and report damage promptly to start a claim.

For long-term protection, ensure your original installation included proper flashing and waterproofing. Consider more frequent post-storm visual checks of your attic and ceilings under the array, especially if you live in an area prone to heavy rain. Planning for potential assessment and repair can help you respond effectively if issues arise.

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Frequently asked questions

Are solar panels themselves waterproof?

Yes, the photovoltaic panels are sealed and designed to withstand rain. The primary concern is not the panels getting wet, but water infiltrating the roof, wiring, and mounting points beneath them, which can cause electrical and structural damage.

Who should I call first for water-damaged solar panels?

Prioritize safety. First, shut off the system using its designated disconnect. Then, contact an electrician to assess electrical hazards. For roof leaks or interior water damage, you would also need a roofer and local water damage pros.

Can I run my solar system if the roof underneath is wet?

No, you should not. A wet roof deck suggests potential water contact with wiring or penetrations, creating an electrocution or fire risk. Keep the system powered off until a qualified professional inspects it and confirms it is safe to operate.

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