Metal profiles are laid correctly. Durable and reliable roofs made from new roofing coverings. The main advantages of corrugated sheets

If the foundation is the basis of the entire house, then the roof is its reliable and permanent protection. Today manufacturers offer a great variety various materials for laying on the lathing, but the most universal is considered to be a metal profile, which is a steel sheet with a special coating and a corrugated surface.

It has many advantages, among which, first of all, strength, reliability and attractiveness should be noted. You can very easily install such a roof with your own hands without the participation of expensive specialists and designers; you just need to follow some requirements and recommendations that will help you complete this work efficiently and quickly.

In our article we will tell you exactly what advantages a roof made of profiled sheets has, what requirements exist for its installation, and list the main stages that installation includes. Our experts will reveal some of the secrets of laying corrugated sheets, cutting them and attaching them to the roof.

Advantages of metal profiles as roofing

Many people believe that metal tiles are much more attractive and profitable than metal profiles, but this is far from the case. They differ not only in shape, but also in the reliability and rigidity of the sheet, and in service life. Metal profiles can be laid with my own hand, without using complex schemes that are necessary for installing any other material.

Metal profiles have advantages that cannot be ignored.

Versatility. It can be used not only as roofing material, but also for the construction of fences and garages, the installation of very strong floors, and wall cladding.
Easy installation and the ability to do it yourself.
High strength, resistance to any type of impact and various negative operating conditions. The polymer layer not only protects the surface from corrosion, but also does not fade or crack. The roof does not need to be painted regularly; it does not lose its brightness.
Light weight, can be installed on any type of sheathing.
External attractiveness. A roof made of metal profiles can be the most various shapes: single-slope and gable, complex hip. The sheets themselves are attached quite simply and reliably; the metal can be cut to give it any shape.

The undoubted advantages include environmental friendliness, fire safety, and the possibility of additional insulation.

What is a metal profile?

So what is profiled metal sheet that is so attractive for DIY roof installation? Corrugated sheet is a steel sheet that is cold rolled in special machine and is covered on both sides with special protective layers.

In the section you can see the multi-layered metal profile: in the middle there is steel with a thickness of half a millimeter to 1.2, then on both sides protective layer, applied using hot-dip galvanizing (the simplest option ends there), then there is a layer of passivation, a primer and a special polymer coating are applied to the front side, and a layer of protective paint is applied to the back side.

A roof made of metal profiles most often has a polymer coating various types, but for outbuildings Simple unpainted corrugated sheeting with a layer of zinc can also be used. This option is much cheaper (about forty percent).

Installation conditions

Installation of corrugated sheets, although simple, still requires compliance with several conditions that will allow all work to be completed efficiently and quickly.

For cutting sheets, use only special tools, but not a welding machine or an abrasive saw. After cutting, remove all chips and debris immediately.

Installation of sheets must be carried out taking into account a number of factors:

The angle of inclination of the slope affects the pitch of the sheathing.
The installation itself can be carried out in two methods: from blocks of three sheets and four sheets. In this case, laying begins from the bottom; the material must be fixed with self-tapping screws only after it is aligned with the cornice.
Self-tapping screws with special rubber gaskets are used; they must be fastened deep into the wave to the battens to ensure reliable fastening without damaging the corrugated sheet itself. Additional elements should be attached last.

We cut the sheets correctly

Cutting the corrugated sheet should be carried out carefully so as not to damage the protective polymer coating.

During installation, it is important to cut correctly metal sheets in such a way as not to damage the polymer protective covering. It is recommended to use cutting shears or reciprocating saws for cross cutting. Discs with carbide teeth are also suitable. To cut with your own hands along the sheet, you can take metal scissors.

But such scissors are not suitable if you need to cut the sheet crosswise, since the waves can very easily be deformed, and the crumpled corrugated sheet practically does not fit - even if it is straightened, uneven, sloppy edges still remain.

Abrasive tools such as grinders are not suitable for cutting. When cutting with such tools, problems arise. high temperatures, the coating begins to fade, and as a result the metal profile may be exposed to negative influence corrosion.

Experts do not recommend using and welders, which not only damage polymer layer, but also disrupt the structure of the leaf, making it very vulnerable. Therefore, it is better to use only recommended tools when cutting, even if this may slightly increase the working time, but the quality will remain at the same level.

We offer several simple, but very useful tips, which will help facilitate DIY installation, making it faster and easier.

When working, you must use only soft special shoes that will not damage the surface of the profiled metal. If the thickness of the sheet is less than seven tenths of a millimeter, then it is necessary to install wooden walkways along which to move during work.
After the installation of the roof is completed, the surface should be thoroughly cleaned of shavings, debris and dust; all scratches and chips should be immediately touched up with special paints to protect the roof from corrosion.
Three months after installation, you need to go up to the roof and check the tension of the screws, if necessary, tighten them more. This will help ensure the strength and reliability of the coating.
Follow safety rules construction work at height, use cables and mounting belts, even if the work is carried out at a height of one floor.

We hope that our tips will help you install a reliable, attractive roof with your own hands that will last for many decades.

Metal roofing was one of the first truly durable and practical roofing materials used for residential construction. Disadvantages roofing steel considered only low corrosion resistance and load bearing capacity. Modern materials based on this alloy in comparison with it have best characteristics, therefore metal profiles are very popular among developers. Convenient sizes sheets make it easier to install the coating, and its affordable price allows it to be used even on a limited budget. In this article we will tell you how to cover a roof with a metal profile so that it lasts for many years.

Metal roof profile is a practical roofing material that is made of galvanized steel. From sheet metal, used for construction, it is distinguished by a pronounced profile, which gives the coating additional rigidity and load-bearing capacity. The thickness of the metal profile sheet is 0.5-1.2 mm, and the dimensions can vary at the request of the customer. There are two varieties of this roofing:

Note! The metal profile is suitable for roofs with slope angles of at least 12 degrees. However, professional roofers and manufacturers of this practical material claim that it is possible to make a reliable metal coating and for roofs with a slope of 8-9 degrees, provided that the joints are thoroughly waterproofed with sealant.

Advantages and disadvantages

A roof made of metal profiles is highly practical, which is why it is the most common constructive solution for low-rise residential and garden buildings. In addition, corrugated sheeting is truly universal construction material, with which you can cover the roof, sheathe the walls, or even build a garage. The advantages of metal profiles are:

High strength. The strength of the profiled steel sheet is so high that it can withstand a 3-meter layer of snow even with a very thin sheathing.
A light weight. The weight of a sheet of this material, depending on the thickness of the metal and the height of the profile, is 5-15 kg. The low weight allows the coating to be attached to a sparse sheathing.
Corrosion resistance. Galvanized steel is inert towards air and therefore does not enter into oxidative reactions with it. A special coating made of a stable polymer helps make the material more resistant to corrosion.
Universal sizes. It is possible to make sheets whose size corresponds to the length of the slope in order to avoid horizontal seams during installation, which reduce the waterproofing qualities of the coating.
Fire resistance. Galvanized steel is a non-flammable roofing material, so its installation can be carried out even in buildings with an increased risk of fire.
Low weight. Due to the fact that the metal profile weighs little, installation can be carried out without reinforcing the rafter frame.

Please note that metal roofs have high thermal conductivity and resonating ability, therefore their installation is carried out in conjunction with an insulating material. In addition, the disadvantage of this type of roofing is a large number of waste generated due to the fact that the shape and size of the sheet require significant adjustment during installation.

Roofing pie

A roof made of metal profiles has a complex, multi-layer structure, which gives it the necessary waterproofing, strength and thermal insulation qualities. Each layer of construction improves the quality and extends the service life of the roofing. The roofing pie under the metal profile looks like this:

Lathing. Lathing is a sparse flooring made of edged boards or slats fixed across the rafters, onto which the roofing material must be attached. For profiled steel sheets, sparse lathing is required with a pitch of 60-100 cm.
Thermal insulation. Thermal insulation is necessary to reduce the coefficient of thermal conductivity of the material and noise insulation. The insulation boards must be fastened between the rafters of the frame.
Vapor barrier. A vapor barrier is a special membrane that allows air to pass through, but does not allow water molecules to pass through. It serves as protection for the roof frame and insulation from getting wet and rotting. Vapor barrier material fixed with bottom side rafters
Waterproofing. Waterproofing material protects rafters and insulation from atmospheric moisture. It needs to be secured on top of the rafters using a construction stapler.
Finish coating. Upper layer roofing pie– metal tiles or corrugated sheets, which are laid overlapping with an overlap of 10-25 cm.

Important! Installation finishing coating performed using special roofing screws, which are equipped with special press washers made of rubber or latex. When tightening the self-tapping screw, the washer is deformed and closes the mounting hole from the penetration of atmospheric moisture.

Design Features

The pitch of the lathing under the metal profile is influenced by the size and load-bearing capacity of the sheet. And the amount of overlap between the roofing sheets is determined by the angle of inclination of the slopes:

On low-slope roofs with a slope angle of less than 12 degrees, the metal profiles are laid with an overlap of 25 cm, subject to mandatory sealing of the joints.
On low-slope roofs with a slope of 12-15 degrees, the overlap should be 20-25 cm.
On medium-slope roofs with a slope of 15-30 degrees, the overlap is 15-20 cm.
On steeply sloping roofs, where the angle of inclination of the slopes exceeds 30 degrees, the installation of the coating is carried out with an overlap of 10-15 cm.

Experienced craftsmen claim that turnkey installation of metal tile roofing without taking into account the cost of the material is 1000-1500 rubles per square meter.

Video instruction

The installation technique for special profiled sheets used for roofing is relatively simple. To master it, it is enough to familiarize yourself with some of the features of the material used, as well as the basic rules for handling it.

Before covering the roof with a metal profile with your own hands, you need to carry out a number of preparatory operations of the following nature:

determine the angle of inclination of the future roof;
choose the right brand of profile sheet blanks for the selected inclination angle;
prepare fasteners corresponding to the selected material.

The complexity of installation work increases significantly in the case of erecting roofs of complex configurations.

Types and brands of sheet material

On initial stage preparatory work you need to choose the type that suits your conditions profile sheet, which can have the following executions:

Material grade “C”, which is a sheet of sinusoidal (trapezoidal) profile with a wave height of 8 to 44 mm, which is usually used for the construction of light roofs or as decorative cladding walls
Sheets of the “NS” brand with a fixed wave height of 35 or 44 mm, used for arranging standard roofing coverings.
Sheet material of grade “N” with a wave-shaped profile height from 57 to 114 mm, reinforced with stiffeners, which allows it to be used for covering permanent roofs.

Before installing the roofing covering, you should familiarize yourself with how to correctly select the amount of overlap between adjacent sheets, which depends on the angle of inclination of the roof itself. In this case, the following relations are valid:

with an inclination angle of 12–15 degrees, the overlap should be at least 20 cm;
when the roof base is inclined at 15–30 degrees, this figure can be reduced to 15–20 cm;
in the case of a tilt angle of more than 30 degrees, the overlap is selected in the range from 10 to 15 cm;
at angles of inclination of the base less than 12 degrees, it is necessary to seal the horizontal and vertical seams formed in the areas of the floors. As a rule, ordinary silicone sealant is used for these purposes.

Preparatory activities

Before covering the roof with a metal profile, you will need to worry about arranging waterproofing that protects wooden elements structures and insulation from the destructive effects of moisture. Waterproofing, which is usually used thick polyethylene film, is attached directly between the rafters using small construction staples. There is a small overlap (about 15 cm) at the junction of adjacent film strips.

Particular attention should be paid to the fact that the protective waterproofing film should be stretched with a slight sag (about 2 cm), and between it and the insulating material there should be a small gap of about 2–3 mm.

Special ventilation slats are installed on top of the waterproofing layer, creating conditions for air circulation in free spaces under the sheathing and eliminating the possibility of accumulation of unwanted moisture fumes in this place.

For mounting workpieces metal profile a special sheathing must be used that provides the required strength of the roof structure and resists its breaking or deflection under the influence of wind loads or the weight of fallen snow.

Roofing manufacturers metal products indicate the main parameters and the procedure for arranging the sheathing for them in the instructions attached to the product. That is why, before starting work, it is recommended to carefully study all the instructions on the procedure for using the purchased material.

Upon completion of installation of the sheathing, a special end board is nailed to its pitched edge, the width of which must correspond to the height of the selected roofing profile.

Thus, general composition roofing, the final layer of which is the metal profile itself, usually looks like this:

an internal facing layer, for example made of plasterboard;
ceiling slats used as internal lathing;
vapor barrier protective film;
slabs insulation material, laid in niches between the rafter legs;
waterproofing protective coating, eliminating the possibility of moisture accumulation in the area where the insulation is located;
special ventilation gap;
external sheathing;
the coating itself (metal profile).

Installation procedure

Laying roofing sheets with an appropriate angle of inclination, the overlap should be carried out starting from the lower angle of the blood. In this case, the following installation sequence must be observed:

the first sheet is placed on the roof so that its lower cut protrudes beyond the overhang by 3–4 cm;
then this sheet is attached using special self-tapping screws with rubber seals, screwed into pre-prepared holes located at the bottom of the wave;
in this case, each subsequent sheet, laid overlapping, is aligned along the edge of the previous one, and then also baited;
after forming a row of 3–4 sheet blanks, the latter are finally fixed to the sheathing;
the second and all subsequent rows of covering are installed in the same way (taking into account the overlap with the previous row specified in the instructions).

The sheets are attached to the sheathing every second wave.

During work, you should always remember that movement is only allowed on finally secured workpieces. In this case, the feet should be placed in the grooves of the waves, resting on the elements of the sheathing.

Video

For information about the installation features of corrugated sheets, watch the video below:

Today we will figure out how to choose a metal roofing profile and make a reliable and durable roof. Follow all the recommendations outlined in the review, and you will be able to carry out the work no worse than professional builders.

If you carry out the work yourself, then in addition to the installation itself, you will have to perform a number of other actions: preparing the surface, constructing the sheathing, purchasing materials and calculating their quantities. We will break the entire process into separate stages and consider them in order of execution.

Measurements and calculations

Before you begin any action, you need to carry out a number of preparatory activities:

Illustrations	Description of work
	The height and width of each slope are measured. To work, you need a tape measure of sufficient length and an assistant. You should not rely on information from the project; actual indicators often differ from those indicated in the plan.
	Diagonals are measured. This is necessary in order to find out whether the slopes are smooth and whether there is a violation of the geometry in the roof structure. The diagonals must match; if there are discrepancies, all problems must be eliminated before work begins.
	The roof slope is determined. This is very important aspect, since the calculation depends on it necessary materials and the design of the base that will be made. The measurements do not require absolute accuracy; you must determine which interval on the diagram your roof belongs to.
	The approximate amount of materials is calculated. If the slope is less than 15 degrees, a continuous flooring is made, onto which the lathing is laid in increments of 300 mm; if the slope is greater, then the lathing increment can be from 450 to 600 mm. If you have overlaps of sheets, then do not forget about the reserve for the joints, they are quite large. Waterproofing is installed under all types of structures; when calculating it, take into account an overlap of 100 mm at the joints.

If it is possible to cover the entire slope in one piece, then it is better to do just that. Although lifting long elements is less convenient, the roof is much more reliable and durable.

Required materials and tools

First, let's figure out how to select and calculate a metal profile.

Here you should follow the following recommendations:

Sheet length. It should be 50 mm longer than the length of the slope so that there is a slight overhang. As for overlaps on joints, on roofs with a slope of up to 15 degrees this figure is 300 mm, with a slope of 15 to 30 degrees - 150-300 mm, with a slope of over 30 degrees the overlap should be 100-150 mm;
Sheet width. It is worth remembering that the corrugated sheet has two sizes: actual and usable width. Actual is the real parameters of the element, useful is the width that closes when joining sheets. It's easy to understand: usable size always 50 mm less than real;

Wave height. For roofing, it is best to choose options with a wave height of 10 mm or more. The most popular are profiles from 20 to 45 mm, they look good and are highly durable;

Manufacturer. Choose products famous companies which are well known in the market. There is no need to try to save money by buying products of unknown origin. The price may be slightly lower, but the quality differs very much; many times I have come across corrugated sheets that begin to rust after a year or two due to incorrect manufacturing technology and savings on the quality of the coating;

Color. This aspect does not relate to quality, but greatly influences appearance Houses. The roof should be combined with the facade, so choose the shade that best suits the overall design and will not look foreign;

Material thickness. Very important criterion, on which the strength and durability of the roof depends. There are a lot of products on the market made from sheets with a thickness of 0.4-0.45 mm; they are inexpensive, but the quality is appropriate. I recommend purchasing options made of metal no thinner than 0.5 mm, but in general follow the principle “the thicker the better.”

In addition to corrugated sheeting, other materials are also needed, their list is as follows:

OSB sheets. They are necessary if the roof slope is less than 15 degrees to create a continuous deck along the structure. If the slope is greater, then this material is not needed;

Anti-condensation film. It fits under corrugated sheets and prevents the formation of condensation, which is very important, because metal surfaces With constant contact with moisture they begin to rust. Usually the material is sold in rolls of 75 square meters, when purchasing, do not forget about the overlaps at the joints, which should be at least 100 mm;

Board 25x100 mm. Used for the construction of sheathing under corrugated sheets. You can use thicker versions, but thinner ones should not be used due to their low strength;

Fasteners The film is secured using construction staples. The sheathing is fixed with wood screws, and the corrugated sheet is secured with roofing screws. This type of product is painted in the same color as the base material and has a washer with a rubber gasket for reliable protection holes from moisture ingress;

Skates and end elements. To cover the ridge and the junctions with the gables, use special products. It is worth choosing additions of the same type as the main material.

To work you need the following tool:

Screwdriver. It is used to tighten screws. For regular fasteners, you need a PH2 nozzle, and for roofing fasteners, an M8 hexagonal nozzle is used;

Metal scissors. Can be used both electric and manual option. It is better to choose a tool for figure cutting so that the handles are located above the plane of the material, this will make it more convenient for you to work;

Never cut corrugated sheets with a grinder. This causes the edges to overheat, and the ends begin to rust in a short time.

Construction stapler. With its help fastening membrane material it will go quickly, and the quality of work will be high;
Hacksaw. With its help, sheathing elements are cut.

How to carry out work

Installation of a roof made of metal profiles is carried out according to a certain scheme. The instructions for performing the work look like this:

Illustrations	Description of work
	Vapor barrier is attached. The material is spread horizontally from bottom to top; Fastening is done using a stapler; there is no need to pull the membrane tightly, it should sag by about 2 cm; At the joints, overlaps of 100-150 mm are made.
	The sheathing is attached. It can be fixed directly to the rafters, or you can fasten a counter-lattice bar to create a ventilation gap. The sheathing is laid in increments of 30 to 60 cm; To maintain the exact location step, cut out the block as a pattern and align the elements according to it before fastening.
	The material rises to the top. The metal profile on the roof must be lifted so as not to damage the sheets. For this: a frame is made, as shown in the figure, on which a profiled sheet is laid and then raised to the top; Use gloves while working, as it is very easy to cut your hands on the edges of the material.
	Fastening in progress. The corrugated sheet is placed on the roof; remember that on the overhang the material should protrude by 30-50 mm. The screws are screwed in strictly vertically so that the washer is evenly pressed against the material and protects the attachment point; First, you can fix the element with several fasteners to put it in the desired position.
	The final fastening of the sheets is carried out. Self-tapping screws are screwed into each wave at the top and bottom. In the middle they are located through the wave in increments of 50 cm and are screwed in according to the location of the sheathing.
	The skate is attached. To do this, first a foam rubber tape is glued to the surface, which has the configuration of a corrugated sheet (it is sold together with the ridge); The ridge is fixed with self-tapping screws every 30 cm; At the joints, overlaps of 50 cm are made and fasteners are screwed into the joint on both sides.
	Wind corner is attached. The elements are placed from bottom to top and fastened on both sides - and on end board, and to corrugated sheets. Moreover, you need to screw the fasteners into the corrugated sheet through the top of the wave to ensure reliability. The fastening step is 25-30 centimeters.

If you are changing the covering, then before you cover the roof, you need to remove old roof, this stage is carried out before starting work so that precipitation does not damage the structure.

Conclusion

This article will help you choose quality material and carry out work without the involvement of specialists. The video in this article will clearly show important points workflow, helping to understand the topic even better. If you still have questions, write them in the comments.

When designing a residential building, there comes a time when it is necessary to decide on the choice of roofing covering. The decision-making is influenced by such factors as: cost of material, strength, reliability, complexity of installation and guarantee period to aesthetic and specifications. The use of metal profiles as roofing is a kind of golden mean from the whole variety of materials offered. Low cost and excellent performance characteristics make metal profile roofing one of the most affordable and rational decisions. We will talk about how to cover a roof with a metal profile in this article.

Previously, metal profiles were used in the construction of fences and self-supporting structures, but the affordable cost and technical characteristics, similar to metal tiles, made it very good choice for the roof.

Characteristics of metal profiles

Key positive factors when using metal roofing:

small specific gravity;
increased safety due to fire resistance;
corrosion resistance due to polymer and oxide coating;
wide coverage color range;
mechanical strength;
range of sizes;
affordable price.

Metal profiles are produced with a thickness of 0.4 to 1.0 mm from galvanized steel with coating polymer coating or without it.

Three marking options are used depending on its purpose:

If the length of the roof slope requires the installation of sheets in several rows, then before attaching the metal profile to the roof, it is necessary to determine the overlap of the sheets.

The horizontal overlap is made on the sheathing and depends on the angle of inclination of the roof slope:

with a roof slope angle of 12-15°, the minimum required overlap is 200 mm;
with a tilt of 15-30°, the overlap limits are 150-200 mm;
in the case where the slope of the roof slope is more than 30°, the overlap can be 100-150 mm;
If the roof slope angle is less than 12°, the vertical and horizontal overlaps should be sealed using silicone or thiokol sealant.

The vertical overlap is made in half a wave for steeper roofs, one wave and two waves for flatter roofs (the recommended overlap must be checked with the manufacturer).

Preliminary work before installing the metal profile

Before attaching the metal profile to the sheathing, it is necessary to make all calculations according to required quantity material based on length eaves overhang, which exceeds the length of the roof slope by 40 mm.

Cutting of the material is carried out with tin shears, mechanical cutting shears, a fine-toothed hacksaw, an electric jigsaw and a carbide circular saw.

The use of an abrasive tool (for example, a grinder) is strictly prohibited! Tin shears are only suitable for longitudinal cutting of profiles. If you start cutting across the metal with them, its deformation and difficulties with further installation are inevitable!

Before covering the roof with a metal profile, you need to use a lining to take care of protection from moisture and thermal insulation. For this purpose they use waterproofing film or membrane. The lining is attached to the rafters with brackets, with a slight sag of about 20 mm and a recommended overlap of 100-150 mm. It is also necessary to make a sufficient gap of 20-30 mm between the waterproofing and insulation. To fix the gasket, use a counter rail 40-50 mm wide.

Installing a roof on a roof

Before covering the roof with a metal profile, it is necessary to raise it using logs. It is necessary that three people participate in this process. The rise to the top is carried out one module at a time.

In windy weather installation work should be stopped due to the large “windage” of the profile!

Installation of metal profiles on the roof begins from the end of the roof. If a metal profile is being laid on a roof with a drainage groove, then it is necessary that the next profile sheet to be laid overlaps the groove of the previous one.

The profile sheets are mounted perpendicular to the cornice. The first sheet deserves special attention - the accuracy of the location of the entire roof as a whole depends on its correct installation.

On gable roofs installation begins from the right or left end, on hip roofs– laying is done from the middle of the hip. To control the horizontality of the roof slopes, a cord is pulled along the eaves, with the help of which the lower edges of the metal profile sheets are aligned.

Instructions for installing a metal profile may conditionally consist of the following operations:

Metal profile sheets at the ridge and overhang are attached to the sheathing through the bottom of the wave with 4.8x38 mm self-tapping screws in every second wave, at the end edges into each sheath along the bottom of the sheet. In the middle, fastening occurs in a checkerboard pattern at the rate of 4-8 screws per 1 square meter.

For long roof slopes, multi-row installation of modules is used. Fastening between the sheets occurs at each bottom of the profile along with simultaneous fixation to the sheathing. There are two versions:

Since the metal profile is fastened to the roof using self-tapping screws, it is necessary to adhere to several simple rules, if followed, the roof will last for many years.