Two metal colours can look close on a small swatch yet differ visibly across a long façade viewed from the entrance. Gloss, profiling, panel orientation and light all affect the appearance. Before ordering, request samples of the actual skins, place them in their intended orientation and view them alongside the door and trims. Here is how to record your choice and specify it in the order. This is particularly useful for phased work, when adjacent elevations may be supplied at different times.

Sandwich panel documentation is useful when it can be linked to the exact product being supplied. A family name, section illustration or table for a similar thickness cannot confirm every required characteristic. Before purchase, work from panel identification to the relevant data sheet, stated performance and conditions of use. This guide explains how to review that information without copying unrelated numbers into an order. It distinguishes product information from whole-assembly performance, examines units and checks the scope of tables. It also explains how to handle discrepancies. The result is a set of questions and confirmations for a specific item, rather than an attempt to replace the design with a catalogue.