Tezno T.4 GRANDES LUCES is a system for use as sheathing in roofs with composite lightweight panels. This system is assessed according to the ETAG 016 Self-supporting Composite Lightweight Panels-Part 1: General and Part 2: Specific aspects relating to Self-supporting Composite Lightweight Panel for use in roofs, edition November 2003 used as European Assessment Document (EAD).

The Teznocuber® T.4 GRANDES LUCES panels are used as insulating self-supporting roof sheeting in roofs. The system does not have structural functions nor does it have significant influence on the racking resistance of the works.

The Teznocuber® T.4 GRANDES LUCES panels are adequate to use indoor or in normal humidity conditions and always require external finishing layers to provide waterproofing and protection performances.