Choosing materials for the construction of a house or a summer residence, everyone asks the question: what is better to choose for your case. In this article, we will consider the advantages and disadvantages of such popular roof coverings as ondulin and metal tile.
Content
Ondulin
This is a wavy roofing material. It is made from organic cellulose, which is impregnated with bitumen and heat-resistant resin. Next, the sheets are coated with mineral pigments. Ondulin is also called the “Euro-slate” because of its external resemblance to sheets of asbestos-cement slate. But the main difference of ondulin is the lack of asbestos in its composition, which can harm human health.
Onduline is the name of a well-known French company that began the production of corrugated roofing sheets in 1944. In Russia, this material appeared in 1994.
Advantages and disadvantages
| Benefits | disadvantages |
|---|---|
| Light weight, easy to transport | Material refers to fuel. Do not allow the adjoining of ondulin to chimneys |
| Easy and quick installation, which can be dealt with without the help of specialists | Fragility, low resistance to mechanical stress |
| Possibility of use on complex surfaces, including laying on top of an old roof without disassembling it | A rough surface that contributes to snow retention |
| High level of noise absorption, material thickness 3 mm. | High consumption of mounting materials |
| Resistance to bacteria and fungi and to alkalis and acids. Ondulin does not rust and does not form condensate | Small color scheme |
| Acceptable price | |
| It is possible to replace individual sheets of ondulin without affecting the rest of the roof | |
| Light weight ensures minimal load on walls and foundations |
Be sure to pay attention to the following characteristic features of a real soft roof:
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Euro slate sheet consists of 10 waves, and its thickness is 3 mm;
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the sheet cut is homogeneous, without distinct layers;
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on the extreme wave of each sheet there is a computer printout with the manufacturer's code. It is applied to accessories and to nail caps.
Main technical parameters
| Specifications | Value | Tolerance |
|---|---|---|
| Length | 2000 mm. | + 10 –3 mm. |
| Width | 950 mm. | ± 5 mm. |
| Full thickness | 3.0 mm. | ± 0.2 mm. |
| Wave height | 36 mm. | ± 2 mm. |
| Weight | 6.0 kg | ± 0.3 mm. |
Basic physical and mathematical characteristics
| Characteristic | Norms and Standards | unit of measurement | Value | Notes |
|---|---|---|---|---|
| Strength | NFQ 03-054 OFIC standard | kPa kPa / m | >1800 up to 170 | – – |
| Breaking load | – | kg s / sq.m | 960 | The rafters and crate are destroyed, not ondulin |
| Elastic modulus | ||||
| Emax Emin | DIN 53457 | kg s / sq.m | 8.160 3.940 | – |
| Thermal conductivity | ||||
| 35 ° C 40 ° C 50 ° C | DIN 52612 | Kcal / mh ° C | 0.19 0.20 0.195 | Low thermal conductivity compared to the calculated value |
| Thermal resistance | DIN 5212 | ° C | up to 110 ° C | up to 110 ° C Properties do not change, shape and elasticity are preserved. |
| Soundproofing | DIN 52210 | db | 40 | – |
| Frost resistance | DIN 52103 DIN 52104 | freeze / thaw cycles in water | 25 | No changes in appearance and damage were found. Frost-resistant plates |
Metal tile
The metal tile is a roofing sheet material. Profiled metal sheets are made of sheet steel, copper or aluminum, coated on both sides with a passivation and primer layer, then on top - a protective and decorative polymer layer with different colors, on the bottom - protective paint. They have a transverse and longitudinal corrugation profiled by cold pressure. The sheets of metal tiles with their appearance imitate the laying of clay tile roofs.
For the first time, this type of roof began to be manufactured by Rannila in Finland in the 80s of the XX century.
Today, such material is very popular.Its price and technical characteristics directly depend on the polymer coating.
As a protective and decorative layer of metal tiles in production, use such polymer coatings as polyester, polyurethane (pural), polyvinylidene fluoride, acrylate, plastisol. Material properties directly depend on the choice of coating:
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anticorrosion;
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chemical resistance;
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tolerance of low and high temperatures;
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resistance to mechanical influences;
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color fastness;
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life time;
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resistance to ultraviolet.
Advantages and disadvantages
| Benefits | disadvantages |
|---|---|
| Fast installation with a minimum number of joints, which can be carried out at low temperatures. The length of one sheet can reach 7-8 m. Depending on the manufacturer | The thickness of the material is bad for its rigidity |
| Good waterproofing | The slope of the roof should be more than 14% |
| Fire safety | Low level of noise and heat insulation |
| A variety of aesthetic solutions. It is possible to choose not only the type of profile geometry, but also the coating - it can be matte, glossy, metallic or embossed. | Sophisticated roof construction increases material consumption due to the formation of scraps and the need to select a pattern |
| The light weight of the roofing material of the metal tile does not require reinforcing the rafter system | When installing a roof from a metal tile, it is necessary to provide additional costs for the edged crate and the waterproofing membrane |
| Long life with the right polymer coating | If the protective layer is damaged, the operational properties of the metal tile decrease |
| Possibility of choosing the right cover for certain climatic conditions |
Comparison table of polymer coatings
| Coating Properties | Polyester (PE) | Matte Polyester (REMA) | Plastisol pl | Pural pu | PVDF (PVD2) |
|---|---|---|---|---|---|
| Micron thickness | 25 | 35 | 200 | 50 | 27 |
| MIN permissible temperature ° C | -10 | -10 | +5 | -15 | -10 |
| MAX permissible ° C | 110 | 110 | 60 | 120 | 120 |
| Resistance to weathering (on a 5-point scale) | 4 | 4 | 3 | 4 | 5 |
| Corrosion resistance (on a 5-point scale) | 4 | 4 | 5 | 5 | 4 |
When choosing a metal tile, the following characteristic features must be considered:
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if the thickness of the metal is less than 0.5 mm, the installation will require more attention and accuracy;
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zinc coating protects the metal from corrosion, its content should be at least 200 grams per sq.m. coverings;
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choosing a polymer coating, you determine the set of technical properties of metal;
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the length of the sheet is best chosen no more than 4 m to facilitate installation (the wind will not demolish the sheets and lift onto the roof is much easier);
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damaging the protective layer of metal, you reduce its anti-corrosion properties;
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the presence of a primer layer can be checked by external aspects - from the inside, the sheet should be light gray;
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always check for a certificate of conformity.
Video instructions for installing the roof with ondulin and metal tile
//www.youtube.com/watch?v=OBVRbFENeUI
//www.youtube.com/watch?v=7xp5D02BTps
Summary
Ondulin can be mounted on its own, for its transportation it is not necessary to hire special equipment, which cannot be said about the metal tile, the sheets of which are taken immediately of the required size to avoid the appearance of extra joints. This will be a big plus for those who incorrectly calculated the need for material or who decided to change the initial proposed design during the construction process. Ondulin will save from the noise of rain and strong winds, bird stomp on the roof, which is usually complained by those who chose a metal tile as a roof. The warranty period for ondulin is 15 years. Ondulin, unlike metal, can change color in the sun, some complain about the appearance of dark spots on the coating. You should think about choosing in favor of ondulin, if you do not want to remove the old roof. The metal tile wins if it is supposed to be used in areas with snowy winters, because with the right slope the snow does not linger on it.The crate for ondulin will be more often, but different materials can be used for the crate, unlike metal tiles, for which it is recommended to use only edged boards, which will affect the overall costs for organizing the roof. On the "euro slate" mechanical damage may occur during impacts (for example, with strong hail). When decorating chimneys with ondulin, it can melt. At a cost, an ondulin roof will cost less than a high-quality metal tile.
And in conclusion: no matter what material you choose, you always need to pay attention to proper installation, the use of special hydro-, steam- and heat-insulating materials, films or membranes so that your roof does not leak and the snow on it doesn’t melt inexplicably .
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