Journal

When should a supplier’s product range have separate entries?

30.09.2026

ModulaHub Editorial Desk

A supplier’s range should be split into separate system entries when its products have distinct assessed scopes or materially different assemblies and uses. Keep the supplier identity once, then link each system record to its own current identifier, assessment document, scope and limitations. NSAI’s register lists Castleforms Ltd against two named systems and certificates: ICF Therm Wall System, 22/0431, and Raft Therm System, 23/0434. The certificates describe different assemblies, so a single undifferentiated product entry would blur what each document covers. [1] [2] [3]

Split records when products have distinct assessment scopes, assemblies or intended uses; keep the supplier as the shared parent record. [1] [2] [3]
NSAI lists Castleforms ICF Therm Wall System as certificate 22/0431 and Castleforms Raft Therm System as 23/0434, under Castleforms Ltd. [1] [2] [3]
The ICF certificate covers an insulated concrete formwork wall system; the Raft Therm certificate covers ground-floor insulation and perimeter formwork combined with a reinforced concrete slab. [2] [3]
Variants belong within one entry when the assessment documents them as options within the same defined system. The ICF certificate, for example, specifies multiple concrete core and block options. [2]

Use the assessed system as the record boundary

An assessment identifier belongs to the product or system defined in its document. The NSAI Agrément information pack says the certificate relates solely to the product or system defined in that document, and warns against associating the mark with other products in a catalogue. For a supplier index, use that same boundary: record the system name and identifier together, and do not extend the evidence to the supplier’s full range. [4]

Castleforms shows why one supplier can have two entries

The NSAI register lists Castleforms ICF Therm Wall System under certificate 22/0431 and Castleforms Raft Therm System under 23/0434. The ICF certificate describes interlocking expanded polystyrene blocks with polypropylene connectors, filled with concrete to form walls. The Raft Therm certificate describes high-density expanded polystyrene ground-floor insulation and perimeter formwork used with a reinforced concrete slab. The second certificate says walls are outside its scope, even though it is compatible with several wall types. These are complementary systems, not two names for one assessed assembly. [1] [2] [3]

Keep options together when the document keeps them together

A change in size or configuration does not automatically require a separate system record. The ICF Therm certificate describes one system with options including 100, 150 or 200 mm concrete cores and several block configurations. Keep such options under that system entry when the assessment presents them within the same scope. If a variant has its own assessment or a distinct scope, give it a separate linked entry and document the boundary rather than inferring equivalence. [2] [4]

Check scope before recording a new product

NSAI’s application form asks applicants to describe proposed use, suitable building or substrate types, height limits, durability requirements and exclusions. It also says individual or unique systems, such as mineral wool and EPS external thermal insulation composite systems, should be applied for separately. Those fields make a practical record check: compare the assembly, intended use, interfaces, exclusions and assessment identifier. A shared company name or catalogue page alone does not establish a shared system scope. [5]

Record the evidence and its limits

For each system entry, store the certificate number, exact system name, issuing body, document link, status check date, documented scope and any stated exclusions. Keep the supplier as the parent record and link related systems without merging their specifications. NSAI’s register lists both Castleforms certificates as of 26 September 2026, but each certificate advises readers to check whether it has been withdrawn or superseded. Recheck status before relying on it for a project, and request the current assessment document when the registry or supplier record does not establish the system boundary. [1] [2] [3]