The compliance gap that shows up after the job is finished, not during it
Installers need to ask themselves what happens to that compliance position once the panels are up and the van has left.
Most compliance conversations happen at the start of a job: the roof loading report, the MCS paperwork, the sign-off that lets the install go ahead. Installers need to ask themselves what happens to that compliance position once the panels are up and the van has left.
Where the real exposure sits
A roof loading report proves the structure could take the load at the point it was assessed. It doesn't confirm the PV design that followed was engineered correctly, and it doesn't verify the installation on the roof actually matched what was assessed on paper. If a dispute, a claim, or a structural issue emerges two or three years later, that gap between the original report and everything that happened after it is exactly where an installer's liability lives, and exactly where a thin paper trail turns into a serious problem.
Building owners raise issues, insurers ask questions, and funders carry out retrospective due diligence. In every one of those situations, the installer who can produce a continuous, professionally insured record from design through to post-install condition survey is in a completely different position to the installer who has a single roof loading report and nothing else.
One partner across the whole project
Roof loading reports remain the core of what BMG does, giving installers the MCS-compliant evidence base every job needs under Section 5.9 of the Solar PV Standard. But we also produce Solar PV Designs, showing 3D views of the property alongside estimated output, savings, and electrical line diagrams, catching design issues before a single panel is ordered rather than after.
At the other end of the project, we offer Building Survey Support which covers pre and post-installation condition surveys conducted to regulatory standards, giving installers and designers a clear record that the installation was safe and feasible from first inspection to final sign-off, closing the exact gap that leaves so many installers exposed.
Why the backing matters as much as the paperwork
Every service BMG delivers is carried out by fully qualified professionals and backed by comprehensive professional indemnity insurance. For an installer, that's not a minor detail. It means the risk on a job has been properly assessed and covered by the people doing the assessing, not quietly passed back down the chain if something is later questioned, years after the job was closed.
That standard has held across projects ranging from single domestic installs to large-scale rollouts for national names including Tesco, Premier Inn, EDF Energy, British Gas, Octopus, and Hampshire County Council, alongside membership of the Energy Efficiency Association, Solar Nation and Solar Energy UK.
Keeping pace with where the standard is heading
Section 5.9 isn't standing still. Over the past year, BMG Surveys’ Managing Director Bryan McGrory, has been closely engaged in the wider industry conversations shaping the evolution of MCS's structural guidance, particularly around competence and evidence requirements. This means the evidence BMG Surveys builds today is shaped with a clear view of where the requirements are heading, not just where they currently stand, so installers working with BMG aren't left catching up later.
Fifteen years, one focus
Since 2011, BMG Surveys has worked with over 3,000 clients across the UK, Ireland, and the Middle East. The service has grown from its original roof loading reports into a fuller suite covering site surveys, chartered engineer certification, PV design, and building survey support, precisely so installers aren't left holding a compliance gap the moment the job moves past its first report.
For installers weighing up a one-off report against a long-term technical partner, the difference shows up exactly when it matters most: not on install day, but whenever the paperwork gets tested.
