Ventilated Facades - Information
Ventilated type facade and wall coverings were developed to protect buildings against the combined action of rain and wind by counterbalancing the effects of water beating on walls and keeping the building dry, with high level aesthetic characteristics and undisputed advantages of heat insulation and soundproofing.
In fact the installation of Granitech System for facades, both for new buildings and renovations of existing buildings, gives considerable advantages of wall durability over time and of energy saving, especially where tall, exceptionally exposed, isolated buildings are concerned.
In terms of thermal energy, ventilated facades can reduce the amount of heat that buildings absorb in hot weather conditions due to partial reflection of solar radiation by the covering and the ventilated air gap and to the application of insulating material, thus achieving considerable reduction in the costs of air conditioning. Vice versa, in winter, ventilated walls manage to retain heat, resulting in savings in terms of heating.
Finally, this building system, thanks to its "chimney effect", set up efficient natural ventilation, hence the name ventilated facade, notably aiding heat and moisture removal and guaranteeing a high level of living comfort.
In addition, ventilated walls tend to increase the reflection of external noise as the particular construction, consisting of layers of facing, air gap and insulating material, ensures a certain level of acoustic absorption.
This obviously depends on the properties of reflection, absorption and acoustic transmission of the materials used, as well as their dimensions, thickness, positioning and the behaviour of the building structure.
Precisely because of the numerous benefits and in depth technological innovations, ventilated walls are earning increasing recognition in the world of contemporary architecture, permitting free interpretation of facades in a modern and brand new style, the perfect answer to demanding project and performance requirements.
Granitech ventilated wall system is a complex, multi-layer structural solution that enables "dry" installation of the covering elements and together with porcelain tile, guarantee considerably better appearance and performance standards than those obtained using traditional building materials.
These systems can also be used to create complete thermal insulation by wrapping and protecting the building in a "coat", without any of the disadvantages (being exposed to atmospheric agents, having to support the covering and the insulating material's lack of aeration).
The resulting total energy behaviour minimises dispersion and promotes thermal balance by reducing energy requirements to a minimum.
In fact the positioning of a continual insulating layer to cover the wall guarantees a decrease in heat dispersion, eliminating heat bridges and interruptions of insulating material due to beams and corner pillars, generally present in traditional walls.
The external facing "take away" both the energy produced by solar radiation and rainwater from the facade and, therefore, from the living areas, thus avoiding direct contact with the perimeter wall that separates the outside of the building from the inside.
In addition, ventilated facades tend to increase the reflection of external noise as the particular construction, consisting of layers of facing, air gap and insulating material, ensures a certain level of acoustic absorption. This obviously depends on the properties of reflection, absorption and acoustic transmission of the material used, as well as their dimentions, thickness, positioning and the behaviour of the building structure.
In short, the advantages resulting from the application of a Granitech ventilated wall compared to a traditional one are:
- elimination of the risk of cracked covering;
- elimination of the risk of detachment from the wall;
- protection of the facade against the direct action of atmospheric agents;
- elimination of beat bridges leading to energy saving;
- elimination of surface condensation (the presence of an air gap facilitates evacuation of water stream from the interior and promotes the removal of possible moisture);
- lasting efficiency of the outer insulating material, which is kept perfectly dry thanks to an excellent ventilation;
- easy ventilated wall installation regardless of the climatic conditions;
- maintenance and work con be carried out on individual porcelain tile;
- creation of a technical working space for pipe and duct housing.
From structural viewpoint, this is a truly "cantilever" system compared to the traditional one; in fact the steel load-bearing structure is anchored to the building wall with brackets and anchoring elements and enables the assembly of "independent" layers, such as an external facing and an insulating material, which, when fit together create an air gap.
Ventilation is much more effective when applied to the entire facade and, for this reason, the air gap needs to be carefully dimensioned for perfect intake and discharge.
Welcome to Granitech
Granitech deals with design and installation of ventilated walls and raised floors. Using state-of-the art technologies Granitech develops top quality solutions for important projects in contemporary architecture.
Ventilated walls are multi-layer construction solutions for "dry" cladding of outside walls, improving their aesthetic qualities, degree of protection and insulation.
A raised floor is a flooring systems designed to meet the different needs of working areas with high concentration of plant engineering systems.
Definitions of terms and phrases commonly used in ventilated and raised applications.