The durability, labor costs and the cost of the work performed will depend on the type of metal roof you choose. The metal roof made of copper will cost you the most, followed by the high cost of the metal roof.
Relatively inexpensive are metal folded roofs of flat sheets. When calculating the cost of work, be sure to consider that the roof of galvanized roofing steel must be covered with an anti-corrosion compound.
The Best Roofing Materials for the Roof of the House
Metal roofing is widely used for low-rise houses of cottage type, including with a complex shape of roofs.
There are several types of metal roofing: flat (or with small stiffeners) coatings of sheet or rolled steel, made by seam technology; coverings from a profiled sheet and its varieties imitating tiles; non-ferrous metal roofs.
How to choose the best roofing materials for a house roof – high-quality and affordable? Firstly, any roofing materials must be accompanied by all necessary certificates (technical, sanitary, fire). Secondly, you can not trust the cost of one square meter of roofing material. The customer should be interested in the cost of the entire roof, which includes not only the roofing material but also the mass of additional elements. For example, for a metal tile (one of the best roofing materials for a roof) – there are more than ten of them. If these elements can be made by craftsmen installing the roof, then their cost will be no more than 10-15% of the cost of coverage. The purchase of additional products in the finished form can double the cost of the entire coating.
When operating metal roofs, combined coatings are very attractive. They are, first of all, protective aluminizing coatings (galvalume). Galvalyum is a pseudo-alloy of zinc, aluminum and silicon (typical composition is 50% AI, 1% Si, 49% Zn). The advantages of such a coating include not only increased corrosion resistance but also, for example, heat resistance.
One of the best roofing materials is copper, but they are also the most expensive. However, with a certain shape of the roof (and a not too logical approach to acquiring all the necessary additional devices), a metal roof can exceed even a copper one at a price. Thus, the calculations showed that, for example, a copper roof with an area of 400-450 m2 (the usual size of the roof of a mansion with a total area of about 300 m2) is only 5-10% more expensive than the same roof area of a metal tile. Therefore, there is currently an increased interest in the copper roof.
It goes without saying that the best roofing materials require additional costs for the purchase of components (in addition to the roof covering itself). The price of components (hanging gutters, funnels, drainpipes, brackets, and elbows for them, and besides this, ridge, end and cornice strips, mountings of ventilation and chimneys, television and radio antennas) can amount to 30-40% of the cost of roofing material.
The strength of the roof when using profiled metal increases. Profiling (corrugation), i.e., giving a wavy shape to metal sheets, galvanized steel corrugated board with or without polymer coating increases the rigidity of the roofing material. The profiled sheet withstands heavy loads without changing shape. Sheets with a height of more than 20 mm are considered structural elements and their use should be confirmed by the manufacturer’s calculations for strength and deflection.
All roofing systems are divided according to the principle of “price-quality”. According to this ratio, roofing materials can be divided into several groups. The first group is low-quality materials at a low price – rolled material and traditional slate. The roof of these materials is quite suitable for a garden house or outbuildings, such as a barn or garage, but not for a major house. The peculiarity of the second group (ondulin, galvanized sheet) is average quality and a significant variation in prices. In this case, the choice should be made by the buyer. The third group – flexible metal and cement-sand tiles, is characterized by high quality and average prices, not much different from the prices of the previous group. These two roofing materials can be considered optimal in terms of price-quality ratio. And finally, the fourth group is copper, flexible and ceramic tiles – the most high-quality and expensive materials. These materials are needed by those who dream of an eternal roof, under which their grandchildren will live.