Trevo

The standing seam system for large-scale projects

Trevo™ is the new standing seam roofing system by Sandrini Metalli, for those who aspire to build on a large-scale, with the aim of combining high performance, design freedom, and ease of installation.

It stems from over seventy years of experience of metal experience and from the desire to offer an advanced system, capable of meeting the increasingly integrated requirements of contemporary projects.

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Features and geometries

Trevo is available in panels with an effective width of 550 mm or 425 mm, customizable upon request. Its geometry is characterized by a male-female interlocking profile, pressure-fitted onto polyamide clips.

The system, featuring concealed fixings between panels, ensures excellent watertightness. An emergency drainage channel located near the interlocking area between panels allows any infiltrated water to be effectively drained away, eliminating any risk of water penetration inside the building.

The pressure-lock interlocking system allows thermal movement between panels caused by metal expansion and contraction, ensuring high durability and long-term performance of the roofing system.

The polyamide clip incorporates a dedicated housing in which an optional additional metal bracket can be installed. This component provides an extra anchoring point for the interlocking system.

Trevo, the system for large-scale projects

The system is designed to integrate building services and accessories without compromising the roof’s mechanical performance or watertightness. In addition, its configuration does not hinder natural thermal expansion, thereby ensuring maximum durability, long-term reliability, and application flexibility.

A next-generation technical solution, developed through the expertise of SANDRINI Metalli and continuous collaboration with designers and construction professionals.

Easy to install, free from aesthetic constraints, versatile in geometry, and sustainable in materials, Trevo is an advanced roofing system, 100% Made in Italy, opening up new possibilities for designers and builders by transforming every requirement into an opportunity for innovation.

Ideal for large-span roofing applications, Trevo has been specifically developed for major industrial, logistics, and infrastructure projects, where efficiency, sustainability, and reliability are key requirements.

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The advantages

Metal roofing for flat roofs offers numerous advantages, including

No external fixing

Pressure locking system

Fast installation

No overlap

Always active drainage joint

Safety even in total immersion

Aesthetic value

On-site profiling

Weather resistance

Anti-condensation and sound-insulation options available

Thermal expansion management

Thermal bridge reduction

Special metal element designed to be installed in a dedicated housing

Finishes

The Trevo systems complement and enhance the performance of the drainage joint panel, offering solutions designed to ensure:

Effective interlocking, engineered to work in perfect synergy with the Trevo profile and to guarantee stability, roof continuity, and consistent long-term performance.
Reliable protection against weathering agents, even in complex installation conditions, preserving waterproofing, wind resistance, and overall roof durability.
Full integration of accessories, specifically developed for the Trevo system, without through-fixings and without compromising the technical performance of the roofing assembly.
On-site profiling, either at ground level or at height, enabling the production of custom-length panels, continuous installation, and maximum design flexibility.

A coordinated range of technical solutions designed to meet the needs of architects and installers, ensuring reliability, ease of installation, and design consistency in every roofing configuration.

Ridge closure system
Trevo Ridge Easy

Trevo Ridge Easy è un sistema di colmo progettato per la chiusura della linea di colmo nelle coperture metalliche realizzate con sistema a giunto drenante Trevo.

Caratterizzato da una geometria ribassata, offre una soluzione discreta ed efficiente, garantendo continuità funzionale ed estetica con la copertura.
Il sistema assicura protezione dagli agenti atmosferici, affidabilità e durabilità nel tempo, mantenendo la continuità della superficie metallica e consentendo la corretta gestione delle dilatazioni termiche.

La configurazione semplificata dei componenti permette una posa pratica ed efficace, ottimizzando le operazioni di installazione.

È composto da: Trevo Wall e Ridge Easy.
Progettato per coperture con pendenza minima superiore al 5%, Trevo Ridge Easy rappresenta una soluzione tecnica compatta e performante per la chiusura del colmo.

Ridge closure system
Trevo Ridge Standard

Trevo Ridge Standard is a ridge system designed for the closure and protection of the ridge line in metal roofing systems made with the Trevo drainage joint system.

Engineered to ensure both functional and aesthetic continuity, the system provides a high level of weather resistance, contributing to the overall durability and reliability of the roofing assembly.

The system consists of coordinated and mutually compatible components, including closure elements, gaskets, support brackets, and connection profiles, which work in synergy to ensure watertightness and proper management of thermal expansion.

It is composed of: Trevo Closer, Trevo Plug, Trevo Clip, Trevo Lower, Ridge Standard.

Designed for roofs with a minimum slope above 0.5%, Trevo Ridge Standard enables safe and efficient installation while maintaining the continuity of the metal surface without direct panel perforations.

Snow retention system
Trevo Ice

Trevo Ice è il sistema fermaneve ideato e progettato per la lastra a giunto drenante Trevo.

Intuitivo e di rapida installazione, il sistema Trevo Ice consente di dotare la copertura di un efficace sistema di trattenuta della neve, preservando al contempo sia la continuità del manto di copertura, grazie all’assenza
di fori passanti, sia la capacità di assecondare le naturali dilatazioni termiche delle lastre.

È composto da: Trevo Ice Mono o Twin, Tubo Fermaneve, Ice Clip, Fix Block.

La disposizione del sistema ferma-neve in copertura è funzione delle caratteristiche geometriche specifiche del progetto (come pendenza e lunghezza delle falde), nonché delle azioni di progetto.

L’ufficio tecnico di Sandrini Metalli è a disposizione per fornire consulenza ai progettisti per il corretto dimensionamento e la
disposizione ottimale in copertura del sistema ferma neve Trevo Ice.

Trevo Safe

SANDRINI Metalli has developed, specifically for Trevo, the exclusive Trevo Safe lifeline system.

This fall protection system consists of dedicated technical components designed to integrate seamlessly with the Trevo profile. The anchoring of safety devices to the roof is achieved without the use of through-mechanical fixings, thereby preserving the integrity and watertightness of the Trevo panels and allowing for natural thermal expansion of the material.

All components of the Trevo Safe system are manufactured using highly durable materials, ensuring reliable and long-lasting performance over time. Trevo Safe devices have obtained Technical Approval Certification for both single-user applications (Type A) and for use by up to three users simultaneously (Type C).

The system complies with the following standards:

UNI EN 795:2012
UNI EN CEN/TS 16415:2013
UNI 11578:2015

Construction solutions

The Trevo roofing system, thanks to its outstanding application flexibility, is suitable for any type of roofing configuration, from the simplest layouts to the most complex architectural solutions, including concave or convex curved roofs.

This broad design versatility makes Trevo an ideal solution both for new-build projects and for refurbishment works, including roof replacement or the installation of over-roofing systems.

Its high level of integration with different construction typologies allows the system to easily adapt to a wide range of architectural contexts and building uses, ensuring consistently high performance.