How are metal roofs made?
Metal roofs are distinguished by thick sheets and a solid protective and decorative coating. Metal roof shingles have panel ribs that are further defined by their shape, height, and spacing. Durability of your metal roofing sheets greatly depends on three factors: the thickness of the panels, the height of the ribs and the quality of the coating.
Why choose metal roofing?
The roof complements the house. It gives it shape and determines the character and style of the entire building. The technical possibilities in this respect are enormous, and the roof structure can distinguish the building from others thanks to a distinctive coverage line or bold architectural solutions. Aesthetic reasons are of course very important, but let’s not forget that the roof above all provides shelter, securing the house from rain, snow, cold and heat. Its appearance is important, however, roofing material must be primarily airtight and durable.
Metal roofing is more practical and longer lasting due to the strength of the material.
This is why metal roofs are an excellent solution for all homeowners. They have exceptional technical parameters, and at the same time are always elegant looking and subdued. Metal roofing tiles are inexpensive, lightweight and long lasting.
What are the advantages of a metal roof?
The durability of steel roofing sheets depends on the height of their ribbing (the higher the ribs, the sheets are stiffer), the thickness of the metal and the type of protective and decorative coating. The technical warranty of metal roofing covers a 30-year period, and for some models it can even go up to 40 or 50 years. The aesthetic guarantee – for chipping and discoloration of the coating – is generally shorter (15-20 years).
What are metal roofs made of?
All of the technical qualities of metal roof tiles are mostly dependable on the material that they are made of. All metal roofing tiles were not created equal. So what are the materials used during the production process:
Copper – a very attractive material especially because it has rust-free properties. It’s one of the most expensive roofing materials and requires special skills, time and a full roof formwork while installing.
Zinc or zinc-titanium – zinc-based materials have similar properties to copper, but it’s cheaper. They also cover with a protective layer – zinc carbonate, which makes them dark or silvery-gray, giving them a nice finish, which is important for many architects.
Galvanized steel – one of the most popular and cheaper materials used for roofing. They’re usually secured with an additional paint and protection coating.
Coated steel – this is the most popular roofing material, mainly because it’s relatively cheap, and at the same time nice-looking and durable. Coated steel from ArcelorMittal is considered the best steel available on the market. Thanks to the appropriate ribbing, coated steel roof tiles resemble traditional roof shingles and at the same time eliminate their main disadvantage – mass. However, most important thing is that they are covered with up to several layers of anti-corrosion coatings, which provide protection from damage, corrosion and atmospheric conditions.
What does the metal roof manufacturing process look like?
The most popular in the industry are standing seam metal roofs. Metal coils are fed into a roll-former, which turns coils into actual metal panels. The material goes through several rolls, which make different standing seam profiles. The roll-former computer controls the speed of the machine, which can alter the sheets into specific length panels. After a specified panel is produced, the machine stops and cuts the panel off. The last step of the process involves applying protective coating to the surface to ensure the maximum level of sustainability.
Metal shingles on the other hand require different machinery – metal coils of certain thickness are stamp the metal shingle profile on an industrial size press. After the panels are profiled they can undergo the coating-applying process, which provide long lasting discoloration and chip resistance.
In addition to the panels and shingles, certain accessories have to be made so that the roof installation can be completed according to industry standards. These elements are made using a rolling or bending process on a computer-based industrial machine. The accessories can include the following: drip edges, side-wall / head-wall / chimney flashing, valley pans, rake/gable trims, ridge caps.