03 February 2021 Metalline: The FIRST and ONLY fabricator of A1 Rainscreen and Insulated Spandrel Panels Posted on 3rd February 2021 by Max Banner Metalline are the first UK cladding manufacturer to uniquely offer BOTH non-combustible aluminium Rainscreen and non-combustible aluminium insulated Spandrel panels – all fully tested and certified to Class A1 rating.