To date, metal is one of the most popular roofing materials. This is not surprising, because it is reliable, durable and able to permanently retain its appearance. Metal tiles are used to cover different surfaces, including the roofs of all shapes and configurations. At the same time on the roof works price available, That is still одним аргументом в пользу этого материала. 
metal sheets are made of galvanized steel, a bilateral polymeric coating serves as a protective, and a decorative function. This roofing material able to withstand temperature extremes from -50 to +120 degrees Celsius. Attractive appearance and variety of colors made metal roofing one of the most popular roofing materials. How to choose metal roofing? Here should focus on several criteria.
steel thickness
For roof coverings, usually, thick sheets are used in 0,5 mm. In some places, the roof, where obviously no one will go, Sheets can be used cheaply (with metal thickness 0,45 mm). When purchasing the material is desirable to check the width of the sheet micrometer. Sometimes unscrupulous manufacturers can specify the default settings (0,5 mm), but in reality they may be smaller.
The degree of galvanization
When selecting metal this parameter is not less important, than the previous. To the roof lasts as long as possible, degree of galvanized sheet should be at least 275 timing / quarter. m. Sheets with less galvanizing (225 and 180 grm per sq. m.) will corrode quickly and last for a short time.
blanket
The layer of polymer coating on a sheet to be deposited uniformly. Otherwise, under the influence of ultraviolet rays on his leaf will fade unevenly, and on the roof visible spots form. The most durable and resistant to UV coating - plastisol, pural and polyester.
