When designing a new building, it is quite often necessary to decide on the choice between ondulin and corrugated board as a roofing. In order to make the most optimal decision, which is better ondulin or profiled sheet, you will need to know the basic characteristics of both materials.
Ondulin
For the manufacture of ondulin (or flexible slate), ordinary cellulose cardboard is used, where bitumen and heat-resistant resins act as impregnation. Giving the desired color is achieved with the help of mineral dyes.
As for the name of the material, that was the name of the French company that was the first to produce flexible slate 50 years ago. If we talk about our country, then acquaintance with ondulin happened around the 90s of the 20th century.
profiled sheet
The coating is made on the basis of corrugated steel sheet. Its waves have a height of 20-80 mm, which allows the material to be given a high level of transverse rigidity. To protect the metal surface from moisture, a single-layer or multi-layer anti-corrosion coating is used.
It can be made from:
- Zinc. With the help of galvanized profiled sheets, temporary fences, roofs in warehouse and industrial buildings are most often organized. The unpopularity of the material in private housing construction is explained by the fact that it is produced in only one color.
- Polymer. To improve performance, galvanized profiled sheets in this case are additionally coated with a polymer layer. Thus, their mechanical strength, ability to resist corrosion and decorative efficiency are increased.
Comparison of two materials - pros and cons
Cost - which is cheaper
The first task that one has to face when choosing between two options for arranging a roof is to determine which is cheaper - ondulin or corrugated board. As of March 2017, price comparison leads to the fact that Ondulin is about 30% cheaper.
It remains to be seen whether the higher price of profiled sheets is justified by their performance characteristics.
Service life of corrugated board and ondulin
Next, it is important to determine which coating lasts longer, ondulin or profiled sheet. Manufacturers of flexible slate usually give a guarantee on their product of 40 years or more. As for the profiled sheet, here the service life is indicated somewhat longer - 50 years. In any case, both coatings are capable of providing sufficiently durable operation for the roof.
However, you should be aware of some nuances:
- Some varieties of ondulin are able to effectively resist moisture for only 15 years, and then if the installation technology is followed.
- Some time after laying, ondulin fades under the influence of sunlight, but the service life of ondulin is not reduced from this.
- The actual durability of the profiled sheet is largely affected by the thickness of the zinc protective layer. In an effort to win the competitive race, many corrugated board manufacturers often try to save on this.
- When cutting a profiled sheet with an abrasive tool, it should be borne in mind that in this case its corrosion protection is violated. This can cause rust to form along the cut line.
Therefore, it is not possible to determine what is better for the roof - ondulin or corrugated board, comparing the duration of their service. Here, approximate equality is observed, since this indicator is influenced by many additional points.
Strength characteristics - which is better for the roof
It is very important how the roof will be affected by a snow load or a big wind. If there are other extensions or trees on the site, then there is always a risk of a piece of neighboring sheathing or a tree branch arriving on the roof.
The popular brand of flexible slate "Smart" has the following indicators:
- The maximum allowable snow load is up to 960 kg/m2.
- The maximum allowable wind speed is 175 km/h.
The accompanying documentation for profiled sheets does not provide such information.
- Wind with a speed of more than 117 km / h is called a hurricane. It is capable of causing massive destruction, damaging homes and uprooting trees.
- The indicator of snow load on roofs in our country usually does not exceed 600 kg/m2. Ondulin roofs are always made pitched, and waterproofing of the joints is usually not carried out.
At first glance, flexible slate wins here.
But one should refrain from jumping to conclusions:
- Steel sheets are an order of magnitude stronger than bituminous impregnated cardboard. For example, ondulin fences can only prevent small pets. As for profiled sheet fences, such structures do an excellent job of their duties, having good anti-vandal characteristics.
- The ability to withstand snow and gusts of wind indicated for flexible slate is also characteristic of a profiled sheet. The main thing is that in both cases a continuous crate is used.
- During severe frosts, ondulin becomes brittle. And if some heavy object falls on such a roof, it can cause irreparable damage to it. In the case of corrugated board, everything is usually limited to a small dent. The pros and cons of a corrugated roof make it a winner in terms of strength.
Transportation
Next, you need to compare ondulin and corrugated board according to the features of its transportation from the place of storage or purchase to the construction site. This criterion is directly dependent on the size of the sheets and their weight: the lower the weight, the more convenient the transportation.
Here metal products are inferior to ondulin:
- The weight of flexible slate measuring 195x95 cm is 6 kg.
- The corrugated board has a standard width of 120 cm, while the length can be up to 6 m. The weight of a running meter of the lightest variety of material with a thickness of 0.4 mm is about 4 kg.
Installation
As for the installation work, then the advantage is given to the material, the sheets of which are large. This makes it possible to reduce the number of joints, while increasing the speed of work. Considerable length of profiled sheets makes it possible in many cases to completely overlap roof slopes without using longitudinal overlaps.
Metal products have a couple more advantages:
- The cheapness of the crate. To cover the roof with profiled sheets, a crate is arranged in increments of 30 cm. With an increase in the thickness of the metal and the height of the profile wave, the permissible crate pitch also increases. The frame for ondulin should be solid, with virtually no gaps: this implies high costs for its crate. This criterion can be attributed to the comparison mentioned above, which is cheaper - ondulin or profiled sheet.
- Self-tapping screws can be installed at the bottom of the wave: due to the use of rubber press washers, the connections are tight. For fixing ondulin, only roofing nails are allowed, and the place of their driving can only be located at the top of the wave. This type of fastening is not so strong.
Noise level
Results
Each person, comparing ondulin and corrugated board, will be able to come to certain conclusions. If the strength of the roofing is considered a priority, then profiled sheets have an advantage. At the same time, ondulin has its advantages, the main of which is the lightness of the material and the ease of its installation.
Any building or structure has a roof. The roof provides warmth, comfort, protection of the premises from natural phenomena.
The roof construction technology provides for it, including flooring with roofing materials.
Pros and cons of corrugated board
Roofing from corrugated board is quite strong and reliable, it has properties that can be decisive when choosing a roof.
Color palette coating has a wide range, which allows you to give the building an original design.
Ease of installation. Possibility of laying without the help of special devices, lightness of sheets of material.
Positive traits
- refractoriness;
- good water resistance;
- resistance to atmospheric influences;
- good ones anti-corrosion properties;
- affordable price.
Negative qualities
- the influence of atmospheric influences (rain, hail) on the level of sound insulation;
- damage to the roof can contribute to corrosion of the material;
- the ability to critically heat up when exposed to high temperatures;
- condensation.
When installing the corrugated board, it is necessary to properly lay the sheets in order to avoid the water permeability of the roof of the building.
Ondulin or corrugated board - which is better for the roof of a private house?
Comparing two roofings, you can see that they have many positive qualities:
- affordable price;
- ease of installation;
- availability in construction markets ( popularity);
- sustainability to weather phenomena, precipitation;
- the ability to choose a color scheme;
- enough long service life.
What is cheaper, ondulin or corrugated board? Ondulin costs only 5% more, but its transportation is cheaper than the transportation of sheets of corrugated board. As a result, the price of the final product is approximately the same.
Considering the features of each of the materials, it is more important to decide which roof of which particular structure needs to be covered, it is important to take into account its intended purpose. Ondulin is more often used to cover residential buildings: it is convenient to lay it on complex and hard-to-reach places of the roof due to the good flexibility of the material. To correctly calculate the number of sheets of ondulin for the roof, use.
Decking is more often used for warehouses, grocery stores, tents, stalls. It is more convenient to cover large areas of the roof with corrugated board, given the large width of the sheet. Ondulin is easy to lay on pitched roofs.
Decking and ondulin are very popular, and the decision to use one or another coating is made based on personal preferences.
What is better ondulin or professional sheet? It turns out that corrugated board and euroslate do not have significant differences, but some factors can influence the decision on the choice of material, for example, sound insulation of corrugated board or ondulin heat resistance.
Profile sheet device
Ondulin sheet device
Roofing cake for ondulin. A pie for corrugated board is built by analogy
Alternative roofing
With a wide choice of roofing materials, it is not always possible to stop at ondulin or corrugated board. Quite on the market many alternative roofing materials that can be used for roofing:
- . Sufficiently durable material, but has a too low level of sound insulation;
- slate. Differs in low price, durability, but because of the content of asbestos cannot be environmentally friendly;
- ceramic tiles. Quite heavy and expensive material, but it has a beautiful design and a large assortment;
- steel seam roof. Cold, poor noise insulation, but quite flexible and fireproof;
- soft roof. Durability, beautiful design, but very combustible and fragile in the cold.
These and other types of coatings can be used when equipping the roof of a building. Each of them has its own styling features, functional properties, price level, durability and undesirable qualities. Given these indicators, you can choose the right roofing that will last for many years and protect the building from external influences.
Useful video
We suggest you familiarize yourself with the video on a comparative analysis of the qualities of these roofing materials:
Conclusion
Whatever variety of roofing materials is presented on the market, ondulin and corrugated board are the most common covering decks that are used today. Their popularity is due to good performance, price and attractiveness.
In contact with
620 09/18/2019 5 min.Roofing material must be reliable, moisture-repellent and have a beautiful appearance. It is desirable that it can be easily laid, and if necessary, it is possible to replace only one deformed section, and not the entire roof.
Such requirements are met by modern roofing materials, such as ondulin and corrugated board. Often the question arises which one is better to choose, without getting acquainted with their advantages and disadvantages it is difficult to figure it out. We facilitate the choice, we give an exhaustive answer to this question.
Pros and cons of corrugated board
It is a sheet of metal that has increased rigidity. It is based on sheets of galvanized steel, the wavy profile of which is performed on rolling equipment. Its sheets are covered with a protective anti-corrosion compound, then comes a primer layer. Lacquer is applied to the outer side of the material, and a polymer is applied to the inner side.
The rigidity of the corrugated board is provided by trapezoidal ribs. The material is used not only for roofs, but also for arranging fences and walls of buildings.
He found such a wide scope due to his positive aspects:
- Light weight, facilitating the ongoing installation work.
- Affordable cost.
- durability. If during the stay on the roof its protective layer remains intact, then the material can last half a century.
- Environmental friendliness.
- A small number of material joints ensures high tightness of the entire roof.
- Wide range of colors.
- High fire safety. The corrugated board is not combustible and does not support fire.
- Protection against rot and corrosion.
- Versatility. The professional flooring can be mounted on a roof of any complexity and a slope. It is used for buildings for various purposes.
- Beautiful appearance.
How the Monterrey metal tile is fastened and how to do it correctly, the information from the article will help to understand:
What is Monterrey classic metal tile and how to choose it correctly, information will help to understand
The disadvantages of corrugated board include:
- Formation of condensation on the surface of the material.
- Low degree of sound insulation, which threatens the presence of noise during precipitation.
- Roofs with curves and complex corners can be problematic.
On the video - which is better: ondulin or corrugated board:
Pros and cons of ondulin
This material is also called euroslate, it quickly won its admirers, many prefer it because of its aesthetic appearance. The roof covered with it looks attractive, its wavy sheets, imitating classic slate, add harmony. It was invented more than 50 years ago for residential buildings; sheds, gazebos, and private cottages are covered with it. With him, any building looks solid.
In its production, cellulose fibers are used, which are pressed and then impregnated with bitumen. After the manufactured sheets are given a wavy shape. From above they are covered with paint and resin.
Due to the small thickness of the sheet, this material is relatively light, which facilitates its transportation and lifting to the roof of a building. In addition, due to this, ondulin can be cut with an ordinary hacksaw, it bends perfectly, so it can be used for roofing surfaces of any complexity.
Due to its positive properties, ondulin can compete even with tiles, its strengths include:
Like any other material, ondulin has its negative sides:
What's better?
Each of the considered materials is good for a roof, even with its drawbacks. The choice of one of them is primarily based on the preferences of the owner of the house. But the fate of a few nuances of these materials is worth it, if you compare them according to certain characteristics.
Ondulin can only be used for roofs, while corrugated board has a more diverse application. It will be very interesting to look at one section of the roof and the fence, made of it in their native color. But what is better ondulin or metal tile, is described in detail in this But what is better to cover the roof with corrugated board or metal tile, the information will help to understand
On the video, which is cheaper ondulin or corrugated board:
Ondulin differs from corrugated board in greater plasticity, so it is better to prefer it for complex roof structures, it is perfectly fastened in various hard-to-reach places. Under it, you do not need to make a continuous crate, as is the case with corrugated board, it has higher heat and noise insulation properties. On the other hand, galvanized material is not subject to combustion and ultraviolet radiation, it is more airtight, but it is susceptible to corrosion at the attachment points.
The cost and service life of ondulin and corrugated board are the same, the weight of their sheets is practically the same.
Choosing between these two roofing materials, the main thing is to take into account the features of the structure being built, the degree of complexity of its roof, the presence of an attic floor in the house and the structures located near it. Durability and performance properties are guaranteed only by high-quality materials, so when buying them, you need to check for a certificate.
Often, during construction, home owners face a difficult choice when they need to decide between two materials. For example, between ondulin and corrugated board. Comparison of modern roofing materials is a very relevant topic, because everyone wants to find exactly what is ideal for their home.
Advantages and disadvantages
Ondulin
Ondulin was invented about half a century ago and for that time was considered just an ideal material - both in appearance and in its characteristics. It is made from cellulose fibers, which are carefully pressed and impregnated with bitumen, coated with paint and resin on top. Due to the wavy texture, ondulin can be confused with slate, moreover, it is often called euroslate. It is used for roofing and facing works.
Of the obvious advantages of this material, the following characteristics are distinguished.
- Ease. Ondulin is light, weighs quite a bit - about 6 kg with a thickness of 2.7 mm and standard dimensions of 940x2000 mm.
- Flexibility. It is also distinguished by obedience, it is easy to saw, cut, thus changing the shape and size.
- Durability. Roofs covered with ondulin serve for about 40-50 years and do not corrode, rust and rot.
- Good noise reduction.
- Ease of installation. This is one of those materials that can be mounted in any season - even in summer, even in winter. You can even fasten it with nails.
- Environmental friendliness.
- Low cost.
- No condensation.
As in the case with any other material, it was not without drawbacks.
- Burnout. Ondulin is prone to fading in the sun. But the sections of the roof that are constantly in the shade will eventually become covered with moss and other similar greenery. If you want to use exactly ondulin, you need to consider whether the house is located in the shade or in the bright sun.
- Low fire safety. Ondulin is combustible and this is one of its main drawbacks. In the event of a fire, it will catch fire fairly quickly and easily.
- Limited color palette. However, even so, it is considered quite nice material.
- Rough surface. People using ondulin note that snow does not slip off it, which makes it difficult to clean the roof.
- Susceptibility to temperature changes. In wet conditions, it gets wet quickly.
In almost every building hypermarket in a big city or in an online store, you can find onduvilla - a soft tile that has been gaining immense popularity lately. This is an improved version of the well-known ondulin. One of the most noticeable differences is in appearance - onduvilla is available in three colors (green, red and brown) and looks more voluminous due to the coloring in two layers. This contributes to the original design of the roof.
Just like ondulin, onduvilla is easy to install, weighs a little, is resistant to temperature changes, corrosion, fungi and mold, reacts normally to all weather conditions - from hot July sun to November snow or even hail.
Decking
Decking is rigid (made of aluminum, copper or chromium-nickel steel) sheets coated with either polymer or zinc. They can be bent, perforated or with textured embossing, two types are distinguished according to the fold - in the form of a wave and in the form of a trapezoid.
Decking undergoes a procedure such as corrugation, due to which the material acquires both a distinctive appearance and amazing strength. Very often, the appearance of corrugated board resembles slate.
There are three types of corrugated board depending on the protective coating(it is either absent, or hot-dip galvanized, or hot-dip galvanized with a protective and decorative layer) and three types, depending on the method of application and strength: roofing, which is also called load-bearing (marked as H), wall (C) and load-bearing wall ( NS). Roofing corrugated board is equipped with special grooves that increase its strength. It is often used for the construction of garages, warehouses, fences, as well as for wall cladding and roofing.
The load-bearing wall type is used for wall and roofing work. Wall metal profile, respectively, is used only for wall cladding. He is the cheapest.
Of great importance is also the coating of corrugated board. This is either zinc, or a mixture of zinc with aluminum and silicon, or Teflon and polyester coatings, PVC. Perhaps, the durability and durability of your future roof depends on the coating, how it will withstand the attack of sunlight and moisture, and fight corrosion. In addition to letters, there are also numbers in the marking. They show the height of the corrugation in mm. In the case of a roof, the best option is H-153. We are now interested in this kind of material.
Consider the features of roofing corrugated board.
- It has a very democratic price. For a sheet of classic size 1155x1000 mm, you will pay from 150 to 250 rubles. The price varies depending on the thickness, brand and coating.
- Durable and stable. Serves about 50 years, steadfastly withstands various mechanical and natural influences.
- It exists in a wide variety of colors.
- It has high fire safety, is environmentally friendly, resistant to corrosion due to galvanization and polymers in the coating.
- Easy to install thanks to the long length of the sheet. The only caveat: the sheets are overlapped, which reduces the useful width of the sheet by 1-1.5 cm. Suitable even for roofs with a long slope and hides unevenness.
- Universal. It must be said that corrugated board can be used not only for roofing, but also for walls, fences and gates.
Among the shortcomings, experts distinguish the following characteristics.
- Regarding ondulin - a large weight and sheet size, which is not always convenient to work with.
- Weak soundproofing. This becomes noticeable during rain or hail.
- Rapid warming up in the sun. This is especially bad for those people who live on the top floor and even more so in the attic.
- Condensation formation. This means that moisture penetrates the insulation, thus worsening the thermal insulation of the house and detrimental to the ceiling finish.
- Loading difficulty. In order to immerse sheets of corrugated board, you need special equipment, caution and a couple of people. Metal sheets have sharp edges, they are quite heavy and massive, it is almost impossible to load them alone.
Often, when buying corrugated board, you can come across such concepts as profiled sheet, profiled sheet, profiled flooring. Do not be embarrassed, remember that these are all names of the same material.
Manufacturers
When choosing roofing materials, the manufacturer is of great importance: the price at which he sells, what his reputation and customer reviews are. It can often be very difficult to figure out which of a company's claims are true and which are empty promises. That is why it is very important to soberly approach the choice of the company from which you are going to take ondulin or corrugated board.
We would like to draw your attention to some reliable companies represented in our market.
- Company "Metal Profile" originates from 1996 and already has more than 17 factories throughout the country. It is famous for high-quality roofing materials, manufactures siding, metal tiles, profiled sheets, and is also engaged in the arrangement of drainage systems and the installation of sandwich panels.
- American company Nuline produces ondulin and its derivatives - ondalux, onduru, also known under other names (Ondulux, Onduline, Onduvilla). This company manufactures ondulin sheets using its own silicone impregnation, which allows the material to successfully withstand various weather conditions. Also, this company has a huge variety of colors - from classic gray to bright orange and blue. Ondulin sheets from this company shimmer beautifully in the sun, as they have a glossy finish.
What to choose?
When analyzing the characteristics of these two materials, it is not difficult to identify many common properties and minimal differences. Indeed, ondulin and corrugated board are in many ways similar, but what kind of roofing to choose?
To answer this question, you need to compare the characteristics of each material and decide what you want from it.
- Perhaps it can be said that corrugated board is more suitable for covering large areas, if only because its sheets are produced up to 6 m long. It turns out that it is easier to lay, but more difficult to transport and load, and it has better fire safety and not very good sound insulation. The case with ondulin is actually the opposite - it is a little (quite a bit) easier to mount it due to the size of the sheet, it has better sound insulation, but fire safety leaves much to be desired. The durability of these two materials is virtually the same.
- For complex structures, it is better to use ondulin - it is more plastic and it is easier for them to cover small secluded, hard-to-reach corners.
- The topic of price requires separate coverage. Both materials are approximately equally inexpensive, but if you measure directly the area of \u200b\u200bthe material, it becomes clear that ondulin is still cheaper. Let's get back to your installation: ondulin can be laid even alone, and professional flooring will require the help of professionals. All this, of course, increases the final cost of your roof - workers also need to be paid.
The modern market of roofing materials allows you to choose a coating for every taste and budget. And there are two very popular ones in it, seemingly similar, but essentially different materials - profiled metal and bitumen sheets.
They cost about the same, look similar from a distance, have a recognizable geometry and therefore often confuse future home owners: what to choose? Especially given the conflicting customer reviews.
In this case, let's take a closer look at those situations where it is more preferable ondulin or corrugated board: what is better for the roof of a residential and cold attic of a house, northern or southern region, and also what exactly pleases and frustrates in both types of roofing.
Decking and ondulin are really similar in appearance, because both are long sheets, bent on a machine into a certain profile. But in terms of raw materials, both materials differ radically.:
The basis for the manufacture of ondulin is the most common waste paper, which is processed at the plant. Cardboard in the finished sheet is obtained from 400 to 500 grams per square meter. As a result, such a mass looks like a porous material, and is a fiber of the recycling of synthetic, textile and wood raw materials.
And not everything is as simple as many people think. There are certain quality requirements for such raw materials: there should be no lumps, cracks or tears in the cardboard. Only smooth ends and a homogeneous layer, which can provide uniform and high-quality impregnation with molten bitumen in the future. In addition, the paperboard should have some tensile strength and a moisture content of no more than 6%.
But corrugated board today is produced on the basis of cold-rolled, but hot-dip galvanized steel. In production, zinc is applied to a steel sheet with a thickness of 0.14 to 1.5 mm, with a layer of about 30 micrometers. Galvanizing itself reduces the cost of the material, but provides a good level of protection against corrosion. The finished sheet has a sufficiently high mechanical strength and bending rigidity.
Of course, the very comparison of cardboard and steel sounds ridiculous. How can you even talk about something so serious? That's what a lot of people think, and they're wrong. After all, in fact, cellulose is rightfully considered one of the most durable materials among the existing ones. Look at the old wooden houses that have been standing for the second century, and they are not afraid of either wind or rain.
It's all about these flexible and durable fibers created by nature itself - cellulose. And a durable tree in practice withstands a much greater load than thin, like a tin can, metal. Because it's all about the technical characteristics of the finished product.
By the way, e There is such a subspecies of corrugated board as metal slate - this is also a profiled metal thin sheet, which differs only in a wavy shape. It looks more harmonious on the roof than the angular traditional metal profile, but there are still many questions with its high-quality fastening and leakage protection. In appearance, such a roof from afar can no longer be distinguished from an ondulin.
Load calculation: when strength is a priority
According to modern euroslate manufacturers, their roofing can withstand loads of up to 960 kg per square meter. But in the case of corrugated board, you will not find a definite answer anywhere, because it all depends on its brand of destination.
The whole secret is that the height of its corrugations, unlike metal tiles, is very different - from 8 mm to 150 mm. And the higher the wave, the stronger the material, and the more resistant it is to deflection.
And it is precisely for such stiffeners that the metal profiled sheet is divided into separate categories:
Only roofing and load-bearing corrugated boards are suitable for roofing. Moreover, for example, if you want to make sure, then you won’t be able to do anything with ondulin - it always comes in the same format.
But the profiled sheet can be purchased with a corrugation height chosen at your discretion, and provide the roof with almost any strength. After all, such a view of it as a carrier is even used as a basis for covering an entire floor!
Therefore, if you are faced with the question of whether the roof of your house or the same veranda will withstand a plentiful snowy winter, when your region is famous for just such a climate, then it is better to give preference to corrugated board.
All elements: resistance to mechanical damage
There is also such an interesting observation of ondulin: in some regions of Russia, woodpeckers who catch flies in autumn can damage it. There are reviews that these small-dirty birds literally break through this coating. Although ondulin itself is able to restore its shape, such damage does not bode well.
Also, you must have heard that euroslate sags underfoot. This is partly true, and it happens only in unbearable heat over 40 degrees. In this case, under direct sunlight, it is able to soften so much that it really sags from a person’s leg and does not even recover.
Then a natural question is asked: why even walk on the roof in such heat? In fact, there are reasons: to fix the antenna, to remove the mischievous cat, to return the flown drone.
Don't forget about the wind load as well. Yes, and ondulin, and corrugated board have similar geometric surfaces and, as solid materials, have a high windage. But the corrugated board is torn off the roofs more often. Why?
The fact is that in view of this particular problem, ondulin manufacturers produce special nails with wide hats and threads on the stem. The nail is driven deep into the crate, where it sits quite firmly, and the wide head of the fastener holds the sheets well. But with corrugated board, standard self-tapping screws are used. And their hat is not as wide as that of an ondulin.
Heat shielding: the comfort of living under a roof
Here is the fundamental difference between a bituminous profiled sheet and a metal one:
Bitumen is a natural resin, and ondulin has always had and will have a certain flexibility and viscosity at high temperatures. And therefore, on the hottest summer days, it softens a little, which causes inconvenience, at least in the fact that it is temporarily not allowed to walk on such a roof. But at the same time, bitumen sheets themselves have low thermal conductivity, and therefore do not transfer heat to the under-roof space.
Thanks to this, in the attic or in a residential attic with such a roof, it is cool in summer and warm in winter. What can not be said about the metal roof, which heats up in direct sunlight in a matter of minutes, and in winter turns into ice. At the same time, the presence of a layer of insulation under the sheets only partially solves the problem.
Protective Coating: Weatherproof
Modern ondulin on the front side of the sheet is covered with a protective and decorative paint layer based on light-resistant pigments and polymers. High-quality ondulin is also covered with high-strength acrylic, which significantly increases the durability of the sheets and protects against atmospheric phenomena. Thanks to all this, all the dirt that falls on the roof surface is easily removed by the very first rain or sliding snow.
By the way, the surface of the ondulin is rough, and therefore by itself holds a cap of snow on the roof (additional thermal insulation, by the way). But for corrugated board, you need to install special snow retainers, and the more, the better:
As you can see, in terms of properties, this is not far from the ideally smooth surface of the profiled sheet, on which dirt almost never lingers.
Condensation problem: rain under the roof
And not only do the drops collect on the inner surface of the panel, but also roll right onto the walls. And therefore, when laying the insulation, it is imperative to make a ventilation gap, provide airflow so that all moisture leaves the roof and does not spoil the thermal insulation.
At the same time, ondulin does not heat up so much, and therefore does not condense, and there is no question of such problems. True, it softens from the sun's rays and some residents even catch the smell of bitumen.
But, in fairness, we note that there are grades of profiled sheets that are produced with a special anti-condensation coating on the inside. This decision was literally revolutionary. The fact is that corrugated board often has to be stored in cold rooms before sale, and since the metal cools faster than other materials, even from cold air there is something to condense on its surface.
The anti-condensation coating itself is a kind of pile that holds small drops on itself, preventing them from collecting in small streams. And when the temperature conditions normalize, the coating will dry on its own in the air stream:
Interestingly, the polymer film on such a corrugated board also protects the metal itself from negative chemical influences, which are many, for example, in industrial buildings.
For industrial construction, all this is important. After all, the mere use of accompanying material in the form of additional boards and waterproofing at least twice increases the complexity of all work. As well as their cost.
Until recently, condensate on corrugated board was fought with standard technological solutions. A rolled waterproofing or roofing membrane was spread along the crate, a gap was made, then the roofing itself was already attached to the counter-crate. Moisture from the air condensed on the inside of the metal sheet, then dripped onto the waterproofing and simply ran down it if done right.
This is a simple physical phenomenon: there is always water vapor in the air, and when heated, it comes into contact with a colder surface and simply cools down, turning into drops, at a moment called the dew point. And this process happens every day, every night. Considering that during the day the metal roof is heated by the sun and heats the air under it.
If it seems to you now that corrugated board is definitely losing to ondulin, let's honestly and impartially consider the important disadvantages of the latter:
Let's add the following observation about color burnout. G glossy ondulin in a year or two becomes beautiful matte, the lightest in tone and most buyers even like it.
Transportation and installation: pitfalls
Ondulin is quite easy to transport due to its low weight (up to 6 kg). Surely you have seen a stack of bitumen sheets on the roofs of a car or in the trunk. But, due to the fact that ondulin can be bent, it will not be a problem to put it in the trunk, but corrugated board can only be carried on the roof of the car, or even with the help of special transport.
Further, if it is difficult to scratch ondulin sheets during loading and unloading, then the corrugated board can start to rust from the slightest damage. What is the minus of corrugated board, because. in the process of transporting parts to the construction site, you literally need to shake over the metal sheets.
After all, even if you then treat the scratches with paint or sealant, it will become noticeable and the original appearance of the roof will be lost. Therefore, such sheets are also raised to the roof with extreme caution.But ondulin on low buildings is even allowed to be thrown with hands.
Unfortunately, some of the typical problems with corrugated board arise even before installation:
Mounting Features: Geometry Issues
There is a significant difference in the installation of corrugated board and ondulin. So, ondulin is allowed to be laid on roofs with a slope of at least 14 degrees. But the corrugated board, depending on the height of its corrugations, is even suitable for the device of the load-bearing floor of the house. To some extent, certain types of corrugated board are much more durable and stronger than ondulin (which cannot be said about metal tiles).
When the roof is perfectly flat, both bituminous and metal profiles will look decent on it. But if it turns out that the slopes are not even rectangles, then things are bad.
To check this, you do not need to make cuts on the cornices and gable boards. It is enough to measure the diagonals, and they should match. If it turns out that one diagonal is larger than the other, you have a problem.
After all, metal sheets, unlike bituminous ones, you can neither stretch, nor compress, nor “pull” to the right place. You will have to sacrifice another sheet to cut out two triangles from it, and place each on the sides of the slope - where it will be empty and where the error of the truss system will be clearly visible. What after that the roof will look like is another question.
But with ondulin, these problems are easy to solve with your own hands:
By the way, ondulin is quite flexible and by itself slightly eliminates the problem of sloppy crates. But don’t let that calm you down, because we are talking about the construction of the roof. At the same time, with corrugated board, any error will be visible at a glance.
This suggests that even an unskilled builder is able to cover the roof with ondulin of sufficient quality, only by carefully studying the instructions and advice from our site. This is an important point, because there are not so many trained experienced roofers in fact. And the more complex the styling technology, the higher the risk that it will be screwed up.
Consider also such an important point as cutting roofing sheets. You still need to try to spoil the roof from ondulin, and you can even cut bitumen sheets with an ordinary clerical knife. The only thing is that you can cut euroslate in summer only in the morning or in the evening so that it does not soften.
But cutting sheets of corrugated board in an open area is not a difficult task. True, if you do this in direct sunlight, the metal will heat up to an unpleasant temperature, giving hard radiation directly to working people.
One of the most pressing problems is the installation of the mount. Just a little extra effort is enough to damage the rubber gasket of the self-tapping screw. But in the case of bituminous material, you can safely work with a hammer - the base is soft and pliable, and the edges of the cap are more likely to slightly bend it than deform themselves:
This is an important point. Indeed, it is precisely because of small jambs in the installation of corrugated board that 99% of problems arise with it in the future: it corrodes, leaks and loses its appearance!
It should also be taken into account that, if necessary, the corrugated roof can be carefully dismantled and moved to a new location. But in the case of ondulin, it will have to be thrown away, because. the nails in it, of course, can be pulled out, but the very appearance of the ondulin will no longer be the same - torn holes will remain in places after the fasteners.
In total, the manufacturer of ondulin, as well as corrugated board, produces all the necessary additional elements for the roof.
What material do you like best? Tell us about your choice!