Have the roof evaluated before committing to a rooftop solar layout. If the roof is likely to need substantial work while the panels are in service, plan how that work will happen and who will pay to move the equipment. An attractive energy proposal does not answer those roofing questions.
The Department of Energy's homeowner solar guide specifically identifies roof age and the time until replacement as factors to consider. Roof shape, slope, and shading also affect suitability, so an older roof needs a property-specific conversation rather than a yes-or-no judgment based on age alone.
Use these questions with both a roofing contractor and a qualified solar provider before signing installation commitments.
1. What condition is the roof beneath the proposed array?
Request an inspection of the roof areas that would hold panels and the adjoining details the installation may affect. Ask for photos and an explanation of the findings.
Provide the approximate roof age, previous repairs, known leaks, and any recent storm concerns. If records are missing, say so. Ask what the inspector could evaluate and what remains concealed.
Avoid treating a single remaining-life estimate as a guarantee. A more useful answer explains the present condition, the reasons for concern, and the maintenance or repair assumptions behind any recommendation to proceed.
2. Does the roof need work before the panels arrive?
Ask the roofer to separate immediate repairs from longer-term replacement planning. Then share that assessment with the solar company before it finalizes the layout and installation date.
If replacing only one roof section is proposed, ask how the boundary between old and new work will be handled and whether future work on adjacent slopes would require access through the array area. Have both contractors respond to the same marked roof plan.
Base the decision to repair, replace, or proceed on the roof's condition and the work needed in the area being covered.
3. Who pays when the panels must come off for roofing work?
Get a written answer before purchase or lease. Ask who removes the equipment, who stores it, who reinstalls it, and who checks operation afterward. Have the provider identify which costs are included now and which would be quoted later.
DOE's guidance on replacing rooftop solar systems notes that panels and mounting equipment need removal during roof replacement. That makes access planning relevant even when the panels themselves remain usable.
Ask whether the estimate assumes the original installer is available. Record the process if that company is no longer operating or cannot meet the roofing schedule.
4. What permissions apply to removal or repair?
If another company owns the solar equipment, ask for the contract provisions governing roof access, temporary removal, repairs, and reinstallation. Have the provider point to the actual language, including any required notice or approved service providers.
For a purchased system, ask whether changing installers affects the installation warranty or service agreement. Also ask the roof-warranty provider how the planned attachments and later work affect the particular coverage on your roof.
Save the answers with the project records. Do not rely on a broad statement that “solar will not affect anything.” The answer should identify the specific agreements and work being discussed.
5. How will the attachment points be coordinated?
Ask the solar installer for the mounting-system details applicable to your roof material. Have the roofer review the proposed connection and clarify where roofing work ends and solar work begins.
You should know who is responsible for the weatherproofing at each attachment, what documentation will be provided, and whom to call if moisture appears nearby. Ask what changes if a planned attachment location conflicts with a roof feature or concealed condition discovered during installation.
Leave fastening, electrical work, and access to qualified professionals. The homeowner's job is to obtain an agreed detail and a clear responsible party before work starts.
6. Has the design accounted for Minnesota snow and wind?
Ask the solar designer who evaluates the existing structure and the loads for your specific location. A panel's advertised rating does not by itself describe the suitability of the whole roof and mounting arrangement.
DOE's winter-weather guidance for solar systems discusses site-specific snow loading, uneven accumulation, and the relationship among modules, supports, and attachments. Ask for confirmation that the final design addresses those conditions.
Discuss areas below the array, including entrances and walkways, and ask how the design accounts for shedding snow or ice. Avoid making your own structural calculations from a product brochure or general online example.
7. How will crews reach roof details later?
Ask both contractors to review maintenance access on the final layout. Identify vents, chimneys, skylights, and roof-to-wall transitions that may need attention while the array is in place.
Request a clear answer about which routine visits could happen without moving panels and which repairs might require solar service. If the answer depends on the final panel position, have the layout updated before approval.
Ask who maintains the service record and how a future roofer obtains it. A roof plan with attachment locations, equipment contacts, and installation photos can make that first call more productive years later.
8. What happens after hail, a leak, or heavy snow?
Agree on the first call for each type of problem. A roofing inspection and an electrical or solar-equipment inspection have different scopes. Ask the providers how they will coordinate when both systems may be affected.
Have the solar company explain what you can safely observe from the ground and what should prompt a service call. DOE's winter guidance warns that snow-removal activity can damage panels; do not plan to climb up and clear the array yourself.
Keep emergency and routine service contacts together. Also ask your insurer what information it needs about the planned installation, without assuming a particular premium, coverage, or claim outcome.
9. Can both contractors sign off on one shared plan?
Before authorizing installation, assemble a short decision sheet with these fields:
- Roof assessment and any work to complete first.
- Approved array layout and mounting details.
- Responsibility for attachments and weatherproofing.
- Removal, storage, reinstallation, and permission process.
- Maintenance access and storm-response contacts.
Ask both companies to identify unresolved items. If the roof recommendation and solar schedule conflict, resolve that before crews arrive. Keep the signed scope and approved drawings together so later changes can be checked against them.
If you are considering panels on an older roof in Central Minnesota, the Twin Cities, or the Brainerd Lakes Area, request a roof inspection from Committed 365. Bring the solar provider's proposed layout so the roof assessment addresses the area you intend to use.