Path-Q Solar

When should I obtain a second opinion if an installer says no structural review is needed?

Answer

Obtain a second opinion when the roof's age, construction, condition, loading, layout, or records create any meaningful uncertainty, or when the installer cannot explain the basis for waiving structural review. A simple, well-documented roof may not need a separate assessment, but the decision should be supported by a clear scope and qualified judgment before installation.

Key points

  • Ask the installer to document the roof information and criteria used to conclude that review is unnecessary.
  • Seek independent input for older, modified, damaged, large-span, heavily loaded, or unusual roofs.
  • Consider existing HVAC, prior solar, storage, snow or wind exposure, and attachment method where relevant.
  • Do not let a low-cost or fast schedule substitute for confirming structural suitability.

What it depends on

  • Roof construction, age, condition, and records
  • Equipment and attachment loads
  • Existing roof and building loads
  • Qualifications and basis of the installer's assessment

Risks and trade-offs

  • Skipping review can cause structural damage, leaks, redesign, or liability disputes.
  • A second opinion adds cost and time but may identify risks before they become expensive.
  • Overly conservative review may lead to reinforcement or a smaller layout than production modeling alone suggests.

Information you may need

  • Roof plans, inspection history, and prior engineering records
  • Proposed array, equipment, and attachment details
  • Installer's written structural rationale
  • Independent professional's scope and findings, if obtained

Your next step

What to do next

Request the installer's written basis; if it is incomplete or the roof is not plainly simple and well documented, obtain an independent structural opinion before signing off on the layout.

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SQ02077