Jakarta –
Spandek and bondek are materials that are often used in building construction. Both are light steel, even though spandek and bondek have similar names.
However, it turns out that the two have differences in characteristics and function. So, what is the difference between spandex and bondek? Let’s look at and understand the differences so we don’t get confused.
What are Spandek and Bondek?
Quoting from Klopmart, Friday (12/1/2024), Spandek is a light steel material that is usually used as building roofs, the products of which we usually know as aluminum roofs and zincalume. The reason is, spandex roofs are made from a combination of aluminum, zinc and silicon.
Meanwhile, bondek or what can also be called floordeck is a steel plate material that has a galvanized layer so that it is a material that does not rust easily. In general, this bondek is applied for large building construction on the floor.
Difference between Spandek and Bondek
Still quoting from the same site, the following aspects of spandex and bondek have striking differences between these two light steel materials.
1. Function
As mentioned at the beginning, the differences between these two materials have different functions. Spandek is widely used for the roofs of small and large new buildings as protection for the top of the building.
Looking at its function, this spandex material is also suitable for covering roofs of factory warehouses or garages. Apart from that, spandex can also be used for building walls.
Meanwhile, bondek generally functions as a basic building material, has strong characteristics and is able to withstand loads.
So it is suitable as a material for making floors or stairs. This bondek is widely used as permanent formwork in the construction of buildings with 2 floors or more and also as positive reinforcement in one direction.
2. Material
The next difference lies in the material or raw materials used in spandek and bondek. Spandex material is generally made from mild steel such as galvalum which is a combination of aluminum, zinc and silicon with a composition ratio of 55% aluminum, 43% zinc, 2% silicon.
That’s why spandex is a material that is durable, sturdy and easy to shape. However, spandex roofing material is not suitable when applied to residential buildings because this roof has conductor properties that can transmit heat.
Meanwhile, bondek is made from layers of steel plate which are coated with galvanization as a special material which ensures that the steel plate or bondek does not corrode easily. Through the use of this material, bondek becomes a stronger and stronger material for use as formwork.
3. Durability
Spandek and bondek actually have very good durability judging from the materials used. The reason is that both have the properties of light steel materials which are fire resistant, durable and long lasting.
However, in comparison, a spandex roof is a type of roof that is slightly stronger and can even be exposed to rain and hot sun throughout the year. That’s why this spandex roofing material is claimed to be able to last for more than 20 years.
Meanwhile, bondek material is slightly less durable in terms of use than spandex. The galvanized layer on the bondek material actually makes it have higher resistance to fire.
If you use bondek, you no longer need to worry about the surface rusting because the galvanized layer protects it from hot temperatures. This bondek material is also claimed to be able to survive fire for 2 hours in a row.
4. Costs that need to be incurred
In terms of cost, bondek is more economical than spandex. Apart from the bondek material being more durable and long-lasting, this bondek is also more widely chosen as a building construction material because the process is faster and neater. That’s why bondek material can save building costs significantly.
5. Size
These two materials have a similar shape so there is no significant difference between spandex and bondek. However, in terms of size and thickness there are slight differences.
On the market itself, both spandex and bondek have various thickness variations. Spandex roofs have various thickness sizes, including 0.3, 0.35, 0.4, 0.45 and 0.5 mm with various stretch sizes.
Meanwhile, the bondek material has a flat metal shape, available in thicknesses ranging from 0.75 mm to 1 mm with various lengths, where the maximum length is 12 m. That’s why, when used, this material requires special tools to cut it. Apart from that, special workers who are experts are needed to install it.
That’s the difference between spandex and bondek. Hope it is useful!
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2024-01-12 07:36:00
#Differences #Spandek #Bondek #Function #Durability
