METAL ROOF TILES, LIGHT IN WEIGHT, LIGHT IN PRICE
Metal roof tiles look similar to the clay roof tile, in the form of a metal sheet. Metal roof tile weights only one-tenth of a concrete/ceramic roof tile so it can save the structure.
Metal roof tile weights only about 2.5 kg/m² of roofing area so that load received supporting structure (truss) becomes smaller. By implication, the load of the roof as a whole ever so much lighter, so the structure beneath it, such as columns and foundations, can also be more efficient. Cost-efficiency in the use of metal roof tile can also be obtained through the use of fewer roof frames. The size of the metal roof tile is larger than the concrete / ceramic roof tile (there is a length that reaches 770 mm), causing the distance between rafter to be wider.
According to Joseph (Marketing of PT Adesha Metal Tile, a metal roofing manufacturers Sunroof and Rotoroof), metal roof tiles are lightweight because they are made of coated steel. There are two types of coated steel used by each metal roof tile manufacturer, namely mild steel and galvanized steel. However, nowadays many manufacturers prefer mild steel / zincalume coating.
Stone-Coated Metal Roofing or Non Stone-Coating?
In general, there are two types of metal roofing marketed by manufacturers in the United States, namely stone-coated metal roofing and non stone-coated metal roofing. stone-coated metal roofing means that the tile surface is given a layer of stone/sand. Likewise, on the contrary, the non-stone-coated metal roofing does not contain stone/sand.
Stone-coated metal roofing-because it has undergone an advanced production when given stone granules on the roof tile surface – has longer durability than non-stone metal roof tiles. The price is more expensive, the difference between $4,38-$5,91/sheet. Metal roof tile also has variations in color, like red bricks, blue, green, and Brown.
METAL ROOF INSTALLATION
Metal roof tiles also require a roof structure consisting of truss, rafters, and battens. Metal roofing sheets tied to the battens using special nails. In order to maximize the benefits of lightweight metal roof tiles usage, it’s good to use a mild steel roof truss, such as zincalume.
Metal tile has a thickness of less than 0.5 mm. Because it is quite thin and fragile, you should be careful when stepping on it. You can step on the roof tiles where there is a roof frame that support it. If not, metal tiles can be curved and broken.
Mild Steel Coating
A mild steel coating/Zincalume is a coated steel product with composition materials consisting of 55% aluminum (AI) and 45% zinc (Zn). The composition of this material will provide optimum protection against corrosion/rust and fireproof.
Not as Hot as the Zinc Roofing
Just like metal, metal roofing with basic materials from coated steel has the character of absorbing heat. As a result, the space below it become hot. But this heat is still relatively not too high compared to materials from zinc.
Stone-coated metal roofing, also an effort to reduce heat at the bottom of the roof. In addition, this type of roof tile can reduce noise on non-stone-coated metal roofing.
CERAMIC ROOF TILES, VARIED, FOLLOW THE TREND
Besides being strong, ceramic roof tiles have a variety of models, colors, and accessories that vary according to the trends of the house design. Not surprisingly, consumers really like this type of roof tile.
The main attraction of this roof tile is its diverse model. The shape is curved tile, semi-curved, S-shaped, and flat/semi-flat. Color choices are also quite a lot (single color or multicolor) and can be customized to various home architectural designs. There are also several roof tile accessories that can be placed on several points on the roof, such as ridges, rafters, or molding/fascia board. This accessory can be ordered with various colors according to the color of the roof tile.
Ceramic roof tiles are made from clay – just like traditional tiles but are processed at the factory. According to Rusdy Alexander (PT Sun Ceramic Trading Coy-ceramic tile manufacturer), this roof tile has the character of reflecting heat up to 90%. With so much heat reflection, of course, the space underneath it will be cooler.
Ceramic roof tiles are produced through a high-temperature combustion process using an oven. The combustion process is very influential on the strength of the roof tile. Until it reaches a certain point, the higher temperatures are used, the stronger the roof tile.
The combustion processes on Boral roof tiles for example, according to Rusdy, the temperature reaches 1.100°C for 18 hours. High temperature aims to produce a strong and durable roof tile. As a result, roof tiles can withstand loads of up to 200 kg/m² and last for 20 years. The process of combustion with an oven also has an impact on the size of the roof tile to be more precise and uniform with an appearance that is entirely the same.
Glazing and Non-Glazing
Ceramic roof tile surface coloring is done in two ways. First, through painting made after the first combustion process is complete. In this first method, the roof tile is not glazed. Because it is painted, there is more color variation on non-glazing tile roofs than glazed tiles. In fact, now buyers can order the desired color.
The second way, the coloring is done by through a glazing process (glazing layer). Glazing is a chemical compound containing coloring substances and others that support the strength and appearance of the roof tile. Giving glazing is done after the first stage of combustion is complete. After the glazing process, then the second stage of the combustion process is continued. There are two display colors, shiny or doff.
According to Andy Robert (PT Ceramic Tile Prima- ceramic roof tiles manufacturers), the color of the tile roof glazed more durable than the painted roof tile (non-glazing). Some manufacturers claim, the color of the ceramic roof tiles glazed does not fade up to 10 years. The color variations include chocolate, green, blue, maroon, and natural.
Glazed roof tiles have another advantage, namely, the water absorption is very small (<8%). Therefore, the price of glazed ceramic roof tiles is more expensive than non-glazing. For example, Boral brand ceramic tile, the price is $1.04- $1.59 / piece (glazing) and $0.90- $1.18 / piece (non-glazing).
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