I am Minami Ishii, Director of ALG Research and Development Division. Space station shielding is a specialty of ours, and we are principally interested in offering service to your organization in this department.
But I must pre-empt your optimistic assertion with some clarifications. There is no such thing as a permanent insulation from the types of degradation that will occur for any station. Depending on the circumstances, preventative measures may last weeks, months, years, even decades. But nothing is forever.
I do not know which brochure you have been reading for this "Carapace" shielding. Shield generation is always tailored specifically to a station and its environment. It is not typical to apply standardization except in a military context in which installations are considered short-term.

This in consideration, we can examine your specific situation and provide a plan. I assume this is in regards to your installation in Inverness, to which my company are now neighbors?

A name is just that; we can call the project "Carapace" and adjust what that entails accordingly.
I can likely organize an engineering team to be brought over from Keflavik in relatively short order, I will just have to review scheduling and personnel files. The industrial facilities there will also likely be useful for the material effort of the planned expansion.

Needless to say though, "sticking to the public areas" isn't an option - if you want my team to blueprint a major station expansion, they'll need access to every part of it, or at least every part that is relevant structurally and to the power grid. There is little margin for error in such a project, so complete information exchange is crucial.

We have completed our evaluation of the team's report, which I will be including in full in this message.
As a brief summary, these are some of the points of relevance that have come up.
There is concern over the structure of A ring, namely a lack of anchoring points between glazing and bay openings. Suggest construction of reinforcing pillars at points marked A1 through A4.
Energy shielding against ambient radiation spikes may cause power shortages, suggest upping the main reactor output to 12GW. Counterintuitively, shielding for the reactor dome itself is impractical due to position, suggest strengthening of conventional lead-iridium shell.
C ring braces are of insufficient construction to take repeated torque strain from acceleration, suggest heavier build.

In terms of material, most alloys required can be manufactured at Keflavik. Some reactor components and transition metals will have to be imported. Personnel needs should also be covered depending on the availability of your own workforce. As for station operation during construction, there are minor delays scheduled due to re-routing of affected segments, but no major interruptions except for the reactor reboot.

All further details are in the enclosed report.

The reactor components themselves, we will handle. Such goods generally find themselves on restricted cargo lists, and with our accreditations and experience, we will have a significantly easier time sourcing and transporting them.

However, you could be of assistance bringing some of the more exotic metals the alloying processes will require. The structural elements will require molybdenum, while the reactor shell will require radiation shielding iridium. These are, especially the latter, rare elements that cannot be sourced locally. By our current estimates, we will be needing around eight thousand standardized units of each. Our own shipping fleet can source them, but they are overburdened and widely spread as it is, so your own efforts would hasten the work.
The materials can be brought to Invergordon for preliminary storage; their capacity is far greater than Keflavik's.

Otherwise, work has already begun according to schedule.