How to choose metal roofing for roof

Every homeowner planning arrangement of the roof, trying to find a roofing material, which will serve for many years without the need for additional repair work.Therefore, if, for this purpose, selected metal tiles, you need to know certain nuances that should pay special attention on its purchase.

At first glance, the various models of this cover looks quite similar, and manufacturers always promise its impeccable quality.In practice, however, some materials behave unpredictably.Some of them burn out in a year, covered with cracks, and the outer protective layer slide, exposing the metal.Others - sheets sag or they show through the rusty spots.And only really high-quality samples are able to serve for decades without losing its original quality and appearance.

Therefore, how to choose metal roofing for roof correctly and how to determine its quality, and will be discussed further.

Selection Criteria metal

First you need to define the criteria which need to be addressed prior to the acquisition of the roofing material.The main include the thickness of the sheet, the quality of the metal, the presence of galvanizing layer and the resistance of the protective coating, shape, texture and color of the metal, guaranteed its lifetime, coating manufacturing technology, as well as the reputation of the manufacturer.

Now, get acquainted with all the list of criteria that should be considered in detail.

thickness of the sheet metal

thickness of the metal sheets, which are used for the manufacture of metal may range from 0.4 to 0.7 mm, and sometimes even comesand up to 0.9 mm, and the thinner the sheet, the cheaper the price of the roofing material.However, do not get too on this saving by purchasing a metal tile made of thin steel sheet.It does not serve the long term, as the dents on it will be even a small fallen branch.Well, if you go large hail, the "economical" the owner of the house at risk at all to stay without a roof.In addition, working with thin sheets of roofing hard enough, since they can be easily damaged during assembly of the coating.

Quite often in DIY stores, and even more so - in the market, you can find metal packaging, which are incorrect coating parameters.For example, at the specified thickness of 0.5 mm is actually sheets have a thickness of only 0.4 or 0 to 45 mm.Therefore, this criterion for updates, be sure to contact the seller of the goods, and even better - go to the store with his mic.

best option for installation and operation in normal conditions, metal is made from a sheet thickness of 0.5 to 0.7 mm.Lay the material with technology compliance, you can not worry about roof repairs for at least 12 ÷ 15 years.

quality sheet metal

service life of metal roofing material is largely dependent on the quality of the steel from which it is produced.Therefore, when buying a need to ask and this option metal tiles.So, the major manufacturers are used for the manufacture of its products are three types of steel - a European, Russian and Asian.

purchasing roofing material produced in European countries, there is no doubt that they were used only for steel sheets produced in the EU.In the Russian market you can find products from companies such as «Corus» (Great Britain), «RUUKKI» (Finland), «SSAB» (Sweden), «Arcelor» (Belgium).

Russian rolled metal mainly comes from large plants Cherepovets, Chelyabinsk, Magnitogorsk and Lipetsk.

The cheapest is the Asian material, so it is attractive for small producers and metal sheeting, which do not seek to achieve a high quality of its products.Until relatively recently, roofing of a similar steel flooded the Russian market, and today we can also "bump" on such products, which are issued for a quality European or Russian goods.Therefore, the seller when you buy, be sure to request a certificate, which must be specified parameters of the materials used and their manufacturer.

To buy low-quality cover, not worth trying to save money to buy the metal coating on the markets or small shops.Usually they are designed for a buyer with a low or middle-income countries, and hardly profitable to their owners to enter into a contract with the major manufacturers of metal.

necessary to take into account the fact that such trade pavilions can easily run into a fake and made in makeshift conditions.Most often, unscrupulous manufacturers label roofing sheets logo of the famous factory in Russia, manufactures metal and articles thereof - "Severstal".Therefore, if you decide to purchase domestic material, it is worth to study in advance the original logos used and the method of packing sheets.

today for the production of metal used these metal sheets:

• galvanized steel sheet - a traditional material, which is used for the manufacture of roofing.Glassware typically have a thickness of 0.45 to 0.6 mm in thickness rarer 0.7 ÷ 0.9 mm.

metal roofing zinc coating is used to protect steel from corrosion defeat, and polymer layers deposited on top of it are not just for decoration, but also to increase the overall resistance of a material toexternal influences.Sometimes, instead of the zinc coating steel aluzinc used, which makes the roofing material more durable, but such products and the cost will be more expensive.

• Aluminum sheet not subject to corrosion, so you do not have to wait for a dirty trick that from him, that through the polymer coating may tread rusty spots, even if the protection will be damaged.

aluminum metal steel is much easier option, which greatly simplifies its installation.On top of the base color is applied a protective coating which decorates material and gives additional protective qualities.The thickness of the aluminum plate ranges from 0.5 to 0.7 mm.

significant disadvantage of such a metal tile is its high price.

• Copper sheet for metal may have a thickness of 4,5 ÷ 0,6 mm.Roofing made of copper can not be called common, but solely because of the high cost, because in all other respects it is the absolute leader.

Copper roofing tile does not have any decorative coatings, since the material itself has an aesthetic value.

Copper sheet is not subject to corrosion, but over time it formed a greenish patina - patina, which gives the material a special charm.In addition, the patina is a natural protection for the coating against external aggressions.

quality galvanizing layer

Galvanized sheet - is the most common and affordable protective coating for steel.The quality of such treatment is a critical parameter in the choice of metal, since the layer thickness will depend on the operational life of the coating - the thicker the zinc protection, the greater the resistance to corrosion of the roofing material.

Galvanized steel sheet produced by dipping it in molten zinc for a specified period.

Standard galvanized layer is 275 g / m².Such a material is assigned to the first class, and he refers to the "Standard" and "Premium".It is selected in the event that if you plan to exploit the cover decades.By "Business" category includes metal tiles of the second class, which has a coating layer 220, 200, 180, 140, 126 g / m², but of course it is designed for a shorter period.Although GOST 14918-80 indicates that the galvanization should be only 142.5 g / m² or 10 microns, in practice it appears that such a thickness is insufficient for very long-term operation of the material.

Zinc layer able to protect the steel even if the coating has received minor damage, ie it is scratched, or if the cover sheet has been cut, and the tightness of the polymer protection had been violated.The only thing that is really afraid of such coverage - a cutting profile sheet sander, because of the high temperatures the zinc layer partly loses its protective properties.

Unfortunately, check the thickness of the zinc layer is practically impossible, and what is specified by the manufacturer, do not always correspond to reality.If the metal is acquired domestic production, it is worth to choose the material produced at the large enterprise.The manufacturer, who wished to remain anonymous, is unlikely to use high-quality steel with a zinc coating layer necessary.Most likely, the roofing will be made of steel or Asian Russia, but poor quality.Such a roof does not last for a long time.

Professionally Decorated and relief forms

Metal is manufactured in different relief forms and has different geometry, therefore, choosing the material for this parameter, you must take into account the, except that influence the appearance of the roof, and it affects the durability of the roof.

stiffness of the sheet of metal depends on the depth of the die, that is the height of the wave.However, the higher the relief pattern, the lower the elasticity of the sheet.Metal tiles are divided into two dimensional shapes: up to 50 mm - a "small", more than 50 mm - a "high" wave.

embossed pattern sheet may be symmetric and asymmetric waveform.

This factor does not affect the quality and durability of the material, so its choice solely depends on user preferences.

• metal, having a small wave height, made almost all manufacturers, so it can be easily found in the warehouses of building materials in specialized stores.These products are quite affordable and can have different thicknesses and the outer cover sheet.For example, such metal tiles produced by such companies as: «Rannila» (series «Monterrey»), «Planiya» ( «Classic»), «Mera System» ( «EVA»), «Weckman» ( «Type 3"),«Metehe» ( «Classic») and others.
• Metal with high waves, the height of which varies from 50 to 70 mm, also made by many manufacturers, but this type of material has a higher cost.For example, it produced such well-known companies as: «Rannila» ( «Elit»), «Planiya» ( «Viktoria»), «Weckman» ( «Type 1") and other

The range of these companies enough samples howsymmetric and asymmetric profile.

are made and original versions - they generate firm «Mera System» and «Rannila».

relief pattern of metal have their own names, and those who have guided tours of the building shops, should be familiar with names such as "Montterey", "Cascade", "Joker"" Prima "," Classic "," Fashion "and" Banga ".Apart from these, there are new options quite interesting reliefs - a "modern", "Shanghai", "Andalusia" and others.

most popular and common type of metal tile is a profile drawing of "Monterrey", but this material, as well as others, may have different dimensional characteristics.The popularity of this profile because it is as the configuration of a natural ceramic tiles.Besides the well-known profile in the sale can be found and other metal roofing, steady demand from consumers.

The following table presents the most popular profiles, which can be seen on the roofs of houses often enough:

profile: name, illustration, manufacturer	Useful width mm	Overlap mm	Step wave(length unit), mm	Width wave mm	wavelength mm	height of the stage, mm
«Monterrey Standard» ( «Rannila» - Finland)	1100	80	350	183.3	25	14
«Monterrey Super»	1100	80	450	183.3	25	21
«Monterrey Suite»	1100	80	350	183.3	20	19
«Monterrey Maxi»	1100	80	400	183.3	25	21
"Monterrey Retro»	1100	80	150	183.3	19	14
«Monterrey Classic»	1100	80	350	183.3	23	21
«Monterrey Modern»	1100	80	350	183.3	23	15
«Spanish dune» (Chelyabinsk)	1040	107	200 ÷ 450	208	10 ÷ 25	n / a
«Spanish dune» (OZLK - Russian)	457	73	350	230	30.5	16
M-28, E-05, F-045, C-05, C-045 (company "Unikma" - Russia)	1100	80	350	250	24	15
«Andalusia» ( «RANNILA STEEL» - Finland)	1000		116 400 250		36-48	10 ÷ 30
«Cascade » (« Northern Shake »- Russian)	951-1140	55-139	350-400	210-224	22-25	20-23
« Interprofil " (plant "Interprofil" - Russia)	1100	60	350	183.3	24	15
«Spanish Sierra" (OOO "Kazan Steel Profiles" - Russia)