Path-Q Solar
When should I request a professional roof assessment instead of relying on satellite imagery?
Answer
Request a professional assessment whenever roof condition, structure, geometry, access, or remaining service life could materially affect the solar decision. Satellite imagery can help with orientation and rough layout, but it cannot reliably show hidden damage, roof layers, attachment conditions, shading changes, or structural capacity.
Key points
- Professional review is especially useful for older, repaired, leaking, visibly uneven, or complex roofs.
- It is also warranted when solar would require reroofing, unusual attachments, or work near skylights, mechanical equipment, or fragile materials.
- A roof assessment and a structural assessment answer different questions and may both be needed.
- Ask for photographs, observed defects, recommended repairs, and the basis for any conclusion.
What it depends on
- Roof age, material, condition, and prior repairs
- Planned array layout and attachment method
- Attic or structural concerns
- Whether construction or reroofing is planned
Risks and trade-offs
- A professional assessment adds cost and time but can prevent removal, leaks, or premature reroofing.
- Satellite imagery may be outdated or obscure roof obstructions.
- Roof work before solar may change the layout and quote.
Information you may need
- Roof age, material, warranty, and repair history
- Recent roof photographs and leak records
- Proposed solar layout and equipment locations
- Attic observations or prior inspection reports
Your next step
What to do next
Use imagery for preliminary planning, then obtain an on-site roof assessment before finalizing the design if any condition or geometry uncertainty remains.
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