Among the huge variety of roof coverings are particularly popular metal roofs in homes in regions with a variety of temperatures. This version of the location of the roof has a number of advantages, the most important of which is the reliability and resistance to a variety of weather conditions. For example, the climate in Toronto is quite diverse, with temperatures dropping to -15 °C in winter and rising to +35 °C in summer. In my opinion, metal roofing in Toronto are an excellent solution. Today, in addition to traditional metal roofing, new types of materials with polymeric coatings have also been developed. These coatings not only improve the appearance of the roof, but also increase its protective properties. Metal roof coverings are profitable, reliable and beautiful. It is unlikely that today there is a homeowner who does not agree with this statement. Indeed, it is difficult to find a roofing material that would have better strength characteristics than metal coverings. And due to the variety of options, metal roofing houses can have different kinds, so each homeowner can make the coverage of its own roof, different from others.
Types of metal roofs
All the variety of metal roofing materials can be divided into two groups: Flat or sheet metal coverings that are collected by rebate technology. Various profile metal for a roof. To this group of materials includes corrugated flooring, as well as metal tiles. By the type of material metal roofing can be divided into: Steel coverings. This version of the roofing material is used most often because of the affordable price.
Non-ferrous metal coverings. Today, the use of roof coverings made of copper, aluminum, zinc-titanium.
Characteristics of the most popular metal roofing
Let’s consider the characteristics of the most popular types of metal roofing materials.
Galvanized smooth steel
Steel galvanized roofing – a material that has already established itself in the market as a reliable coating that can last 20-30 years. Galvanized steel is a corrosion-resistant material, due to the presence of a layer of zinc, which should have a thickness of at least 0.02 mm. Apply a zinc layer on a steel base by electrolytic deposition or hot – by immersing prepared steel sheets in a bath with molten zinc. Tip! Zinc coating obtained by hot-dip galvanizing is more stable and retains its protective properties longer. Handle the material as carefully as possible during transportation and installation to prevent damage to the zinc layer. Otherwise, the damage site will quickly become a source of corrosion, which will destroy the material. In order to give the galvanized steel roof a more attractive appearance, as well as for additional protection, it is recommended that the coating be painted regularly.
Profiled sheets are produced by cold rolling of steel sheets to form a linear profile. A corrugated sheet can be corrugated in various shapes. The most common material used for roofing is trapezoidal, rectangular or wave-shaped material. Profiled decking can be made of galvanized steel, but it is more practical to use a material with a polymer coating to cover private homes. This version of the corrugated board looks more attractive and is more resistant to external influences. Profiled flooring is available in a wide range. To cover the roof, as a rule, use a wall corrugated board (marked with the symbol “C”) with a maximum (21-35 mm) height of corrugation or a universal type of material (marked with the letters “NS”). The thickness of the roofing corrugated board varies between 0.5-0.7 mm. The width of the sheets can vary between 75 – 115 cm, and the length is chosen by the customer on the size of the slopes of the roof. The maximum length of the sheet is 12 meters. Roofing made of corrugated sheet is installed by laying the material on a wooden crate. The sheets are fastened with roofing screws.
This version of profiled metal roofing material differs from the profiled sheet by the presence of a shaped profile. Most often, the profile of metal tiles outwardly resembles a coating, assembled from natural tiles, but there are other options for profiling. In contrast to the corrugated board, metal tile is always available with a polymeric coating, but the composition of the polymer may be different. Possible options: Polyester. This variant of a covering is presented in two variants – with glossy and with a matte surface. Polyester is characterized by an average degree of resistance to mechanical and atmospheric loads, but, due to its affordable cost, is very popular with consumers. The coating based on polyvinylchloride is plastisol. This polymer is applied on the basis of a thicker layer – 200 microns. For comparison, the polyester coating has a thickness of 25 microns. It provides good protective properties, but is not very resistant to significant temperature variations. Polyurethane-based coatings. An example of such a coating is the Finnish polymer Pural.