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Installation of the Isofran product in Valenciennes

The building is intended for use as an office or a workshop and is located near Valenciennes station. The Isofran façade panel, supplied by ARVAL was used to build it…   Isofran is a sandwich panel made up of two metal skins with a polyester alveolate core in-between. This panel has a secret fix system and can be vertically, horizontally or obliquely mounted, the joins can be discrete or showy according to the architectural effect desired. Isofran panels are made to measure and are delivered finished and ready-to-install, which means they can be installed quickly and easily, thus avoiding any on-site cutting and adjusting.

The envelope of the building is mounted onto a metal structure. It is twin skin cladding made up of an inside cladding tray, glass wool insulation and an Isofran panel for the outside cladding.

 

The secondary frames that support the panels are 1.5mm thick galvanized steel top hat profiles, vertically mounted with a maximum distance of 2 metres in-between. These purlins are fixed onto the cladding trays with adjustable fixing brackets, so as to obtain a perfectly aligned installation plane that is essential for this kind of façade.

A cladding tray with insulation and secondary steel work.

This method consists of mounting elements onto a top hat profile, thereby assuring secret joins and avoiding the use of butt plates and dividers, leaving the façade with a smooth appearance.
Cladding trays with insulation and secondary steel work.

Detail of the plates placed on the back of the panels in the factory, which allow the panels to be interlocked.

Detail of the adjustable bracket used to fix the top hat profiles onto the tray and detail of the interlocking of the panels.

The panels are made according to the framework specified, with maximum dimensions of 1160mm for the section depth and 6 metres for the length. For this site the main framework is 955mm high and 4500mm long.

The panels are interlocked at the bottom and are mechanically fixed with self-drilling screws on the upper edge. The fasteners are hidden from view in the join.

To do this, the architect chose to have round corner connections on the façades of the building. These corners are clad with Isofran panels curved in the factory, forming a quadrant with a radius of 465mm, vertically mounted without any join on the elevation of the building, i.e. 4,5 metres.

A wide range of extra flashings and special panels provide an aesthetically pleasing finish for special areas, such as aperture frames, corners, the underside of bent panels, etc…

Detail of a curved overcladding panel for corner connections on façades.