Julie Etavard too emphasises that terracotta cladding is compatible and excellent for Indian climate conditions. Terracotta panels have low-thermal diffusivity; it contributes to a stable and comfortable indoor temperature during the day and night.
Its ventilated system allows air to circulate throughout the panels joints are not sealed and cool down the whole facade. Also, they are fired over degrees celsius resulting to have fixed colours which will not fade over time and which are UV resistant. Pollution and acid rain are not damaging the products and they are maintenance free. To ensure the cladding accustoms itself to the geographical climate, products like Mangalore roofing tiles or exterior stone finish that can be sourced from the local region and is abundantly available, are the best bet, suggests Kanchwala.
HPL High Pressure Laminate is the best for exterior cladding, says Kanwar, as it can be exposed to combined action of sunlight and atmospheric agents including rain, hail or wind deposits.
These are not affected by thermal shocks and have the ability to withstand extreme climate changes. Further, it reduces the amount of water that is absorbed and provides protection against chemical or air pollution. The primary functions of cladding is to split the indoor environment of a building from the outside in such a way that the outdoor environment will not affect the indoors. It is also best for regulating the light penetration and controlling the radiation and conduction of heat from the sun, and prevents interiors from getting faded and dull.
Additionally, sunshades and louvred panels allow for reflected light to enter the building that enhances the comfort, rather than direct sunlight. If installed correctly with proper vapour cavities and ideally using climate favouring cladding materials with adequate insulation, the thermal mass can be rightly reduced, which in turn would make the internal environment of a structure very pleasant with little or no requirement for mechanical measures to regulate the temperatures inside.
Adding to this, Kanchwala points out that designs like filler slabs, double roof, cavity walls, composite walls, and shadings also help insulate buildings.
Contrary to the above comment of Gurpreet Shah , Rajan Govind observes that for Indian climatic conditions, insulations do not necessarily add significant benefits except in very hot regions. Insulated cladding will benefit in reducing heat loads only for very hot climates, notes Govind. He also points out that any cladding system should be equipped with ventilated rain screen principle, so that the cladding system will have an extended life and lesser risk of corrosion and damage.
Cladding of a building ensures that the internal temperatures are maintained at ideal levels, reducing both the cost burden of HVAC and impact on the ecology, states Amit Shah.
Another point mentioned by him is the protection from water permeation. Many parts of the country experience heavy rains and cladding serves as a coat which reduces the infiltration of water into the primary structure. The acoustic performance of the cladding depends upon the substrate behind the cladding which may vary as per the thickness of the wall and constructions, says Amit Shah. According to Rajendra Shah , the isolation of noise is excellently achieved with partitions which are airtight, large and resilient.
The use of the resilient pad prevents transfer of sound originating inside the structure to outdoor, vertically through the cladding members, he adds. Deviating from the above views on the acoustical properties, Gurpreet Shah points out that cladding necessarily does not provide adequate sound insulation with the exception of brick a high mass, high thickness system. The level of acoustic attenuation of the cladding material is decided based on the type of external and internal environment, with respect to the frequencies and amplitude of the ambient noise and sounds.
Laminated double glazed units having a varying glass thickness, with acoustic PVB is the best choice for acoustics, states Keswani. Facades are designed with passive and active ventilation, such as double skinned facades that allow the warm air to rise, and exhausted from the void between the two skins, explains Keswani.
Additionally, for high-rise buildings where windows cannot be opened due to high wind pressures, passive ventilators are the solution, which can be opened and closed.
Rear ventilated facade concept is quite popular and helps saving energy costs, while increasing the lifespan of building sustainability, spots Kanwar.
One should pay particular attention towards control of air leakage, thermal movement, condensation, integrity and continuity of insulation, prevention of water penetration, maintenance, resilience, etc. The cladding assembly can control the radiation and conduction of heat. Cladding is made from a low conductive material to stop localised condensation on interior surfaces.
Charanjit Shah too states that the integration of thermal insulation with the cladding system the most common insulation materials being mineral wood and polystyrene , forms a closed insulation envelope which helps to eliminate thermal bridges. The ventilated air gap between the primary face and the cladding face is responsible for draining the heat and moisture from outside the building and prevent it from reaching the interiors which regulates thermal insulation to the greatest extent.
With effectively designed and efficiently mounted vapour cavities, condensation risk can be reduced or eliminated. Tensile fabric can alternatively be considered as a second cladding layer which provides a facade as well as shading to a structure.
With a selection of the better cladding system, says Walinjkar , we can achieve the desired value of thermal insulation. Wide range of products is available with low thermal conductivity U-value. Widely used curtainwall systems can control the heat transfer from hot external ambient temperature C — C to an internal ambient temperature of C C by introducing the barrier of EPDM gaskets for better thermal insulation.
Polyamide strips are used to cut the heat flow from either side and provides the best thermal values. In the application, considering the cross-section of a Trombe wall, says Rajendra Shah, both the insulation values and transparency of the cladding material are of critical considerations, particularly in cooler climates where night time heat loss can offset the daytime heat gain.
Trombe walls rely on the combined action of thermal lag of the mass and insulation from the air gap. Unwanted convection is controlled with open able vents at the top and bottom of the wall. The main reason for choosing cladding is that it adds a layer of protection to a building.
Cladding actually increases the mechanical strength of any building, while offering protection from a range of elements. Buildings that incorporate cladding are more resistant to cracks caused by temperature or climate change, water absorption, sunlight and all kinds of pollution compared to non clad structures. Cladding surfaces can also offer protection from rain, humidity, mould and strong winds. An alternative advantage of using cladding is that it results in buildings being low maintenance.
Compared to a painted surface, cladding requires very little cleaning or repairing. You can make your home as welcoming and inviting as you want just by choosing the color, design, and texture of its walls. The beauty of a building is as important as its durability.
Vitruvius, an early 1st-century Roman architect, cites beauty as one of the three essential qualities of a building. The aesthetic qualities of siding are by far the most obvious. However, it serves other less apparent purposes that are just as important. In this article, we shall consider the top four benefits it brings to the table.
The surfaces of buildings may suffer damage if they are exposed to the elements over lengthy periods. Therefore, siding greatly extends the life of a structure by improving its overall strength and protecting it from temperature changes, harmful UV rays, rain, and snow.
This protective layer significantly the maintenance cost of a building. Hence, the accumulated savings justify the initial cladding cost of investment. If you feel your company can benefit from our customised training solutions, please fill in the following form, or email enquiries thefpa.
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