Source first.
No invented systems.

VT02 describes components, not a complete certified ceiling system. Profile size, centres, suspension, anchorage, corrosion class and board build-up must come from the selected complete construction and the actual substrate.

VT03 is used where reinforcement or load-bearing support is relevant. It does not by itself define a complete service-boxing construction. Capacity still depends on the verified build-up, fixing, load direction and spacing.

Fireboard steel protection is specialist fire work, not standard domestic boxing. Any fire-resistance claim requires current UK-applicable evidence, the verified steel section factor and the complete approved build-up.

W61 is a framed lining family. W61 is not dot-and-dab, and it must not be substituted for adhesive direct bonding in drawings, quotations or performance claims.

W61T/W611 direct bonding is separate from W61 framed linings. This German/European method is a technical basis; UK product availability, background suitability and any fire or acoustic claim still require separate verification.

Product names alone do not establish compatibility. Board edge, tape requirement, layer position, moisture exposure and the specified finish level control the compound sequence.

Wall height, duty, door openings, services, insulation, board layers and perimeter junctions are interdependent. Fire and acoustic values apply only to the complete documented variant.

A higher finish level cannot compensate for loose boards, unsupported edges, movement or poor alignment. Finish level and decorative expectation must be agreed before work starts.

Rotkalk is not plasterboard joint compound and is not presented as a core WhiteLine drylining service. Any use or performance claim requires a separate UK product, substrate and specification check.

D12 is not a universal MF ceiling. Perforation, fleece, insulation, suspension and finish are part of the selected tested acoustic construction.

D15 applies where the ceiling is formed below timber joists. It is not a universal reference for concrete soffits, generic MF ceilings or existing metal frames. Fire and acoustic performance depend on the complete build-up.