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For installations requiring MCS-licensed installer sign-off, a structural survey is required under MIS 3002 V6.0 Section 5.9. The survey must be carried out by a suitably qualified engineer and confirm that the roof structure is capable of carrying the additional load imposed by the solar PV array. Without this, the MCS-licensed installer cannot issue certification.

A full pre-construction package covers: structural survey with MIS 3002 V6.0 aligned report, roof condition assessment, CAD layout drawing, and G99 grid connection application where required. All outputs are produced in-house by the same engineering team, delivered as a single package within 48 hours of the site visit.

Our 48-hour delivery benchmark applies to all installer programmes regardless of batch size. Desktop Structural Roof Loading Reports are available within 24 hours of instruction for sites with suitable existing data. On-site survey reports are benchmarked at 48 hours from site visit completion. Volume programmes are managed with a dedicated schedule.

A Desktop Structural Roof Loading Report is produced through an engineer-led review of client-supplied information and due diligence data, producing a preliminary structural load assessment with no site visit required. Reports are delivered within 48 hours of receipt of all required information. This is suitable for early-stage pipeline screening. An on-site structural survey involves a physical inspection by a qualified engineer and produces a full MIS 3002 V6.0 aligned report accepted by lenders, DNOs and certification bodies.

Solar Surveys' reports are produced to £5M professional indemnity cover and Eurocode calculation standards. They are accepted by major commercial lenders, DNOs and their appointed engineers without supplementary sign-off requests or format revisions. Where G99 or G98 connection applications are required, Solar Surveys can manage the submission to the DNO under the same instruction as the structural survey.

Yes. Where an installation is on a warehouse, logistics facility or other industrial structure with complex cladding, our Drone Technical Survey service provides the detailed pre-installation data your team needs: facade condition, penetration locations, drainage and substrate integrity classified zone by zone. This is particularly relevant for large-scale commercial solar PV installations where a standard drone roof condition assessment does not cover the structural complexity of the building. Instructed alongside the structural survey, delivered within the same 48-hour benchmark.

MIS 3002 V6.0 Section 5.9.6 sets out the conditions under which a desktop assessment alone is insufficient and an on-site structural survey becomes mandatory. Key triggers include timber roof structures of uncertain age or condition, asbestos cement sheeting, flat roofs with bituminous covering where substrate condition cannot be confirmed remotely, any site where purlin spacing cannot be verified from existing records, and any desktop assessment that returns a conditional result requiring physical verification. Our engineers identify these triggers at the desktop screening stage and flag them automatically so your programme team can commission the on-site visit before mobilising installation resource.

MIS 3002 V6.0 Section 5.9.6 mandates an on-site structural survey for timber roof structures of uncertain age or condition, asbestos cement sheeting where substrate and fixing integrity cannot be verified remotely, flat roofs with bituminous or membrane covering where build-up cannot be confirmed, portal frame buildings where purlin spacing and cold-formed section specifications are unavailable from existing records, and any building returning a conditional desktop result. Solar Surveys identifies these triggers at the desktop screening stage and flags them before installation is planned.

Every Solar Surveys structural report is produced by a qualified structural engineer and formatted to satisfy MIS 3002 V6.0 Section 5.9 requirements. The calculation basis, sign-off format and report structure are built to pass MCS certification review without revision. For commercial installers managing multiple sites, consistent formatting across the batch ensures certification review proceeds smoothly across the whole programme. See MCS Compliance for the full sign-off pathway.

MIS 3002 V6.0 requires the structural assessment to be carried out by a suitably qualified engineer, not a general building surveyor. A structural engineer applies Eurocode load calculations (BS EN 1991-1-4 wind, BS EN 1991-1-3 snow, BS EN 1990 load combinations) and provides a signed professional determination. A surveyor's report does not carry the same calculation basis or professional sign-off and is not accepted by MCS certification bodies. All Solar Surveys reports are signed by a qualified structural engineer.

Structural surveys should be commissioned before panel layout is finalised. The structural assessment identifies the precise load-bearing capacity available across the roof, which determines the maximum panel density, fixings positions and setback zones. Commissioning the structural survey after design is complete creates the risk that the agreed design cannot be supported structurally, requiring redesign at cost. Solar Surveys offers integrated desktop screening followed by on-site survey and CAD design package from a single instruction, removing this sequencing risk.