Today, gray shabby slate is no longer in trend - in fact many more beautiful and modern roof coverings have appeared. For example, an elegant multi-colored ondulin, the pros and cons of which are vividly discussed in various building forums. It is also beautifully called Euro-slate, and the roof of ondulin looks very presentable. But what is the quality we consider in this material.
This roofing coating, invented by the French, is of 100 percent organic origin. During its manufacture, cellulose fibers are strongly heated and compressed, crimping. The temperature at the same time should be 120 degrees, not less. The finished wavy sheets are painted in a wide palette of colors. Next comes the impregnation of bitumen with the addition of polymers.
The material is safe and eco-friendly. In addition, it is distinguished by amazing water resistance - it surpasses almost all roofing materials in this quality. And on the roof, thin fibers of cellulose, when heated by sunlight, are even more strongly bonded to each other, which adds resistance to water.
But what about them, without anything, there is nothing perfect. However, some of the shortcomings manifested due to improper installation, excessive economy or trivial laziness. So, let's start listing ondulin cons.
1. Durability. Some reviews have complaints about its low strength. They say that it’s impossible to step on the roof without breaking it, nor can this roof withstand heavy snowfall. But often the reason lies in the incorrect installation of the truss system and violation of the technology of installation of the material. After all, for fixing one sheet, you need at least 20 nails, and some save them, reducing the number by almost 2 times. But with the observance of the required step of crates - 0.6 meters with a slope of more than 15 degrees - the ondulin will easily withstand almost a ton of load per square meter. Therefore, the snowfalls he certainly is not terrible.
An example of the deformation of an ondulin roof due to a violation of the installation of the batten.
Another example of violation of the installation technology of the truss system.
This photo clearly shows that not enough nails were used when mounting Ondulin's sheets.
In the summer heat you should not walk on the softened coating of ondulin - it can not bear the weight of the steps. In addition, in strong heat, the unpleasant smell of bituminous fumes can be clearly heard.
2. Fire hazard. Another flaw is fire hazard. Well, yes, ondulin is essentially organic, and therefore it burns.But with what to compare - with expensive metal tiles of the best grades? A cheap "tin" roofing fire is not a hindrance to fire - it burns instantly.
3. Durability. Someone's ondulin coating for a couple of years is destroyed. But there are homeowners who do not enjoy such a roof for 15-20 years. Firstly, it depends on the operating conditions. If they are extreme, and only the best metal tiles can withstand them, then the ondulin will soon collapse. Secondly, you should not save on installation and quality of fasteners, doing everything according to the rules.
4. Loss of color. Over time, the roof of ondulin loses its color, fading in the sun and becoming dull. If this happened quickly, then it is likely that not a real ondulin (which is dyed with bitumen before impregnation), but its analog is used. However, over time, this happens with the original coating.
And this is an example of the fading of the ondulin roof and the protrusion of bitumen sheets on the surface.
6. Biological resistance. After 2-3 years, the surface of the roof starts attacking mosses and various fungi. As a result, poorly lit places turn green. The same drawback - flowering - is inherent in slate.
If done correctly, an ondulin roof can serve as a completely reliable protection for the building. But in any case, for strength and durability, it loses to all roofing materials. Its use is justified in case of a shortage of funds. In this case, it is necessary to mount the sheets on the batten and in small steps or a solid base.