Agree that not so often we choose metal roofing. If to be concrete, then one time: when we build a new roof from metal tiles with our own hands. Before choosing carefully studied the accumulated experience and useful advice of happy owners of this type of coverage. By what rules and criteria should you choose metal.
Content
Choosing a metal tile
Metal tiles are sheets, profiled from galvanized steel. The geometrically correct characteristic wavy form of the metal sheet creates a profiled rolling method.
The multilayer structure of the sheet provides reliable protection against environmental impact and mechanical shocks. What attracts in metal tile and in what its superiority, as a building material of new generation?
Parameters of metal tile
Metolocherpitsa is divided into qualitative parameters, which are basic and characteristic:
• type of the upper layer of the polymer coating
• sheet profile shape
• color of factory application.
Types of metal roofing
There are the following types of metal coatings, which determine its properties:
• polyvinyl fluoride
• plastisol
• polyester
• Pural
• PVDF
• P50.
Polyvinyl fluoride (PVF2) has a coating with a layer thickness of 30 μm. This type of metal tile is a wealth of colors and shades. The material structure does not exfoliate and stand up to any temperatures. Polyvinyl fluoride sheets do not change color during long-term operation.
Plastisol is a plasticizer consisting of dispersed polymers. The thickness of the deposited layer of plastisol applied by the spraying method reaches 200 μm, which provides excellent strength to the sheet.
Basis of coverage polyester is a polyester paint with increased functions. Therefore, polyester is a persistent type of coating, providing universal application for any climate. Polyester is applied in two versions: glossy and matte coatings. The thickness of glossy polyester is 25 microns, matte - 35 microns. Glossy coverage is most attractive, but matte is also not bad.
Type of coating pural This is a structured composition of polyurethane, polyamide and a special improved dye. Due to the capabilities of these polymeric materials, the Pural can withstand an external exposure temperature of -45 degrees to + 120 degrees. The thickness of the layer is 50 μm with the possibility of repair painting.
PVDF Coating (PVF2) is an ultra-resistant coating, which includes a pigment that gives the metal tile a hardness and a bright gloss. The thickness of the coating layer reaches 25 μm.
Sheet Profile Form
All profiles of the metal sheet have a wavy form. Each individual type of the tile range determines the height of the sheet wave. Metal tile is produced by the manufacturer in two versions: with a large and small height of a sheet wave.
A high or large wave is considered to be a height of 5 to 7 cm. "High Wave" is the leader in ranking, therefore it is considered elite. Naturally, the price of such a metal tile will differ by an order of magnitude from the tile with a wave of up to 5 cm. However, if the height of a leaf's wave from the far side can be determined by a professional only. With a spectacular tile device on the roof, an attractive appearance can hide some inaccuracies in the height of the wave.
The most common variant of the roof can be considered metal with an asymmetrically slanted wave. It is necessary to pay tribute to the efforts of efficient sales managers metal montrejrej from the manufacturer.
https://www.youtube.com/watch?v=V4TjGvt9r3s
Dimensions of sheets of metal
The main standard size of a sheet of metal is the length of the sheet, which consists of the length: the ramp and the eaves with a protrusion for attaching the base (4 cm). The standard thickness of the metal sheet is 0.5 mm, in some cases 0.45 mm is acceptable. Before selecting sheets, you need to measure the area of the sheets.
Based on the received data, metal sheets are processed, then sheets of the required size are purchased and purchased. As a rule, even standard sheets do not always correspond to calculations of the laying area, but it is always recommended to take the material with a small margin (10%). It must be remembered that after mounting the sheets, the roof should have a protrusion of no more than 40 mm, otherwise there is a risk of mechanical deformation of the sheet.
The main dimensions of metal with a polymer coating:
• length from 80 to 800 cm with a multiple value of 5 cm, which depends on the shape of the roof
• Sheet thickness not less than 0.45, ideal value up to 0.55 mm
• The height of the wave profile is from 28 to 75 mm.
Before opening the sheets, it is recommended to make control roof measurements and specify the step of the rafters and the location of the fasteners.
Color range of metal
Any manufacturer of metal tiles offers an assortment of color schemes according to the color charts agreed upon by the steel suppliers. The color of the metal tile factory application is presented in a large range of colors.
These are the following types of palettes:
• yellow
• orange
• red
• purple
• blue
• green
• gray
• brown
• white-black
• metallic.
Naturally, a rich assortment of colors pleases the eye when choosing, because "every manufacturer wants to know where pheasants are sitting" ... and metallic too. The most popular are the color cards RaColor and RAL.
Useful tips for choosing
Advice - sheet thickness. The thickness of the metal should not be minimal, namely 0.45 mm. Preferred to give 0.55 mm.
Advice - the quality of the polymer coating. If in the places of mechanical scratching of the sheet a zinc layer is exposed, specify the amount of zinc per 1 sq.m. The amount of zinc should not be less than 180 gr., The ideal variant - 275 gr.
Advice - quality of factory profiling. High-quality rolling of metal tiles must withstand a strict geometry: length, width and height of the wave. The sheets in the same lot must be laid flat.
Advice - high-quality metal tiles are expensive. Distinguish cheap metal from the Chinese foil, issued for metal simply. The thickness of the foil is 0.3 - 0.37 mm.
Advice - correct transportation, delivery and unloading. Organize the correct loading and unloading of sheets using special equipment and soft lines.
Council - quality roofing screws. Screws with seals should be of excellent quality, otherwise the roof will leak.
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