Natural Stone Ventilated Facades
Light Weight Large Format Panels
Gammastone is part of the group Marmoelettromeccanica, a modern and dynamic organization with a profound knowledge of the stone and the facade industries. Gammastone manufactures its own large-sized Gammastone AIR slabs using the most technologically-advanced and sophisticated in the world. The company’s main focus is maintaining high quality standards of production and service. Gammastone believes in introduction of new technologies in order to provide better and more advanced solutions to the clients.
Gammastone AIR are innovative large size slabs produced in natural stone, porcelain, and glass for applications in facades and interior cladding. The patented Gammastone AIR panels are composed of a thin natural stone (or porcelain/glass) slab, a structural expanded core in between two fibre glass mats and a stainless steel plate of 0.5 mm thickness. All components are compacted with resins at elevated pressures. Gammastone AIR slabs are extremely lightweight and have a very high resistance to impacts, bending and compression. (Test results are available upon request). Gammastone AIR is a product protected by patent (Patent No. RM2013A000068).
1. Natural Stone Slab (1/4″ thick)
2. Structural Expanded Core
3. Fiber Glass Mats
4. Stainless Steel Plate (< 1/32″ )
Total Thickness – 3/4″
Total Weight – 3.9 Lbs/Sq Ft
Sizes: the panels are supplied in the requested size by the designer, which may have a maximum size of 48″ X 108″
Panel edge: it can be painted with the same color of the stone and / or have a 45° cut.
Stone finishing: it may be polished, honed, have a satin finish or an antique look and any other request by the designer.
Stone treatments: upon request, special superficial treatments are carried out on the stone; this allows the non-absorbency of materials and optimal resistance to atmospheric agents.
The Gammastone AIR panels are mechanically anchored onto the substructure by means of specific fixtures. Gammastone AIR offers both visible and concealed systems depending on project requirements and costs. Both systems are tested to withstand high design loads and pressures.
CB Products offers complete Designed & Engineered solutions for projects with supporting shop drawings and calculation reports.
THE INVISIBLE SOLUTION
The Ventilated Façade System with concealed back anchors and mechanical hangers (clips) offers the maximum performance and best safety features. The system has no visible components on the face of the panel which creates a very clean look for the final façade. The location of the back anchors is pre-determined and the panels are pre-drilled at the factory for easy assembly. The invisible solution is suitable for both solid brick/concrete wall, as well as the stud wall construction.
THE VISIBLE SOLUTION
The ventilated façade system with visible fastening provides the “smartest” solution proposed by Gammastone. The visible system offers a quick installation, of both of the substructure that of the panel itself. Thanks to the possibility of painting the rivets in the same color as the panel, the intrusion of metallic parts are minimized.
The exterior Gammastone AIR panel is attached directly to the vertical profiles by means of rivets (or screws) from the outside. The vertical profiles are attached to the wall by means of wall brackets.
The relative thermal expansion between the panel and the substructure is managed through appropriate tolerances in the holes drilled for the hardware. In order to contain the deformations of the external finish, at least a central rivet to the panel is always recommended, even in the case of low external loads.
VENTILATED FACADE – RAINSCREEN
In both cases of visible or concealed systems, the Gammastone AIR material creates a rainscreen facade. This rainscrenn façade allows the air circulation in the ventilation cavity between the Gammastone AIR panel and the insulation material. By placing the insulation outboard and allowing it to be ventilated, the performance of the insulation (R-value) is increased drastically. This dynamic “cushion” of air, which is finally expelled at the top of the building, grants a reduction of the thermal loads form outside to inside. Futhermore, the façade acts as a solar shading system, as it absorbs and reflects a good part of the incident energy, thus drastically reducing the part of trasmitted energy towards the building. The Façade also plays an important role in the noise reduction, both from inside to outside and vice versa. This promotes a significant improvement in the final internal comfort of the building.
Gammastone AIR panels can be supplied in hundreds of available natural stone materials. The typical selection of materials can be seen below. More photos and samples are available upon request.
ADVANTAGES OF GAMMASTONE AIR
- Lightweight structure
The structural core foam used in the aerospace sector gives the Gammastone AIR ventilated façade system unparalleled lightness. (4-5 lbs/sqft)
The mechanical anchorage system, exposed or concealed, of the Gammastone AIR panel guarantees recognition as being “safer and more reliable”.
- Easy handling
An exaggerated resistance condensed in 4lbs/sq ft an extremely reduced weight that permits effortless handling of Gammastone AIR panels, also in sizes of 9 feet × 3 feet.
- Easy processing
Gammastone AIR panel drilling and cutting is extremely easy.
- Easy to install
Installation of Gammastone AIR panels is easy, fast, and more economical than conventional methods of stone installation.
- Thermal insulation
Gammastone AIR ventilated façade permits perfect thermal insulation thanks to the air chamber between the panel and the building, specific insulating mats and the said Gammastone AIR panel.
- Acoustic insulation
Gammastone ventilated façades insulate the building from external noise, decreasing the level of sound thanks to various functional layers that generate high absorption of noise, the insulating effect is uninterrupted and acoustic bridges are easily eliminated.
- Protection from water
Rain, low temperatures, frost and dust in the air are among the main causes of decay of external building walls. Gammastone AIR guarantees protection of structural walls against atmospheric agents.
Gammastone AIR ventilated façade is an extremely high protection technological system for walls and, at the same time, enables remarkable breathability. Humidity produced inside buildings is spread to the outside without obstructions and both the walls and insulating materials are always dry and in perfect condition.
– All risks of panel sagging and cracking is reduced by using Gammastone AIR;
– Interventions and maintenance operations may be carried out by only changing individual slabs;
– Cleaning and sanitation of the façade is carried out with extreme ease;
– The façade have a low coefficient thermal dilation and the possibility of cracks and separations is reduced considerably;
– The façade have high resistance to bending and impacts;
– Resistance to wind load is over 10 times greater than the force of a hurricane;
– Elevated resistance to earthquakes.
Gammastone AIR is available in a wide range of colours and materials for infinite design possibilities.