Calculate soft tiles on the roof calculator. Memo on the calculation of soft roof Ruflex. Calculation of the number of ridge-cornice tiles, packaging

Before starting the calculations, you need to understand that the roof and the roof are not identical concepts. By “roof”, we mean the entire system that stands on the Mauerlat: rafters, lathing and counter-lattice, all kinds of insulation and, finally, roofing material, that is, the “roof” itself. The online roof calculator with drawings allows you to get data for both the roof and the roof - in a format convenient for you.

Ready calculation truss system and metal roof tiles (as well as other types of roofing) can be saved both in the form of simple numbers by the number of building materials, and in the form of drawings and 3D models. You can save the result to a PC or mobile device, from which you entered the data, as well as send it by e-mail to yourself or to the specialist who was involved in the design of your facility. By the way, before purchasing, it is recommended to consult with him or with a professional estimator: the online calculator for calculating the roof with roof drawings is designed for standard initial data - your object may have features that the service does not take into account.

Using the service, you can make calculations:

single-slope, double-slope, four-slope, including hip roof;
any of the listed types of roofs, taking into account the attic;
any of the listed types of roofs, given the different angle of inclination;
roof area.

All data is entered in centimeters - for example, the length of the roof along the ridge, which will be 12 meters, must be indicated as 12,000 centimeters; The service also gives results in centimeters.

If necessary, checkboxes can be ticked under the main data to take into account additional materials: mauerlat, counter-battens, waterproofing and insulation. The service takes into account the most used types and brands of materials.

The question “how to calculate the material for the roof” worries both those who plan to build their own housing, and those who plan to overhaul their own house, dacha or cottage. Depending on how accurately it will be possible to calculate the roof on the roof, the entire investment strategy is built both in construction and in repairs. In Moscow, St. Petersburg and others major cities In Russia, there are special companies that provide services for the calculation of roofing materials. There are also online services (online calculators) that allow you to successfully calculate the roof area and building materials for both gable and shed roof. Some homeowners are quite capable of calculating the roof on the roof with their own hands. This technique has both its advantages and disadvantages.

At independent calculation much to take into account small parts, delve into the details of roofing. But at the same time, the accuracy of calculations is significantly increased, which allows you to save and use building materials more efficiently.

When analyzing the question “how to calculate the material for the roof”, it is worth paying great attention to the supporting structure, its quality and safety margin. A small mistake can be enough for a new roof to “fold” after a heavy snowfall. In Moscow, such cases happen every winter. If you are not sure that the calculation with your own hands will be completely correct, it is easier to use the help of professionals. They know exactly how to calculate the roof of a gable roof, which guarantees its reliability and eliminates the risk of overpayment.

Before calculating the amount of timber material needed for the construction of the roof gable roof should take into account the following factors:

Used roof. It is necessary to take into account both its type and its volume.
Natural factors (this includes both snow and wind loads).
House area. The calculation of the material for the roof is made with the obligatory consideration of this indicator.
The number of slopes. The larger their number, the more complex and massive the truss system becomes.
The value of the angle of inclination. The larger the angle, the more lumber is required to support the roof.
The presence of an attic.
Number of chimneys and ventilation pipes as well as dormer windows.

Timber is calculated in strong relation to wind and snow load, which is different for each region. You can find out the parameters of the load on the roof using special tables.

The amount of strapping timber (Mauerlat) has a great influence on the calculation of the weight of the roof. First you need to get the volume of the Mauerlat by multiplying its length by the cross section. After that, you can get the weight of the upper strapping by multiplying the density of the wood of the beam by its volume.

The beam for the battens and counter-battens can form a solid or stepped (at intervals) base. The option for arranging the base depends on the type of used roofing material. The calculation is made according to the instructions, taking into account the base step.

OSB sheets for furnishing solid battens for the installation of flexible tiles are calculated according to a separate instruction, taking into account the peculiarities of joining and the location of the sheets.

Finished roof example

The area of \u200b\u200bthe slopes of a gable house can be obtained by a very simple method. If, as an example, we take a box of a building 9x7 meters, with a rafter length of 4 meters, with a cornice overhang of 0.4, and a gable overhang of 0.6 m, we can easily calculate the area of \u200b\u200bthe slopes using the following formula:

9 (building length) + 2x0.6 (pediment overhangs) x4 (rafters) + 0.4 (cornice overhangs) \u003d 10.2x4.4 \u003d 44.9 "squares". The sum of the areas of the two slopes is 89.8 square meters. The tilt angle correction factor allows us to get a more accurate value. To do this, the resulting area must be multiplied by a factor of 1.221 at a roof angle of 35 degrees or 1.414 at an angle of 45 degrees.

Calculation of the area of \u200b\u200bthe slopes according to the formula

Scheme for calculating the area of \u200b\u200bthe slopes

Roof calculation with online calculator

The online roofing calculator is a great service that greatly simplifies the calculations of specialists and homeowners. Thanks to this service, you can get all the necessary data to start work, as well as the purchase of building materials. In the online roof calculator, you can get accurate data on the cross section and the amount of such materials:

strapping beam (Mauerlat);
rafters (step, length);
crate (width, thickness);

Using the online roof calculator, you can get the exact volume of material and the weight of the structure. Such a calculation will help determine the configuration of the roof and the estimated cost of purchasing lumber.

Calculation of soft roof RUFLEX

Calculation soft roof RUFLEX can be produced in two ways:

do-it-yourself calculation of flexible tiles on the roof;
calculation of shingles on the roof using an online calculator

Area of slopes.
The length of the valleys.
Connection length.
The length of the cornices.
Skate length.

Under a flexible tile it is necessary to lay a lining carpet. Without this mandatory condition, the manufacturer does not provide a guarantee for its products. The number of rolls of underlayment can be obtained by dividing the area of the slopes by 15 or 20 sqm, depending on the chosen material (self-adhesive or with sticky edges). When choosing, it is worth considering the method of laying the lining carpet. Vertical installation implies a mandatory overlap on the roof ridge, horizontal installation will be more economical (all this is described in detail in the roof installation instructions section). Be sure to take an amendment for the longitudinal overlap of the material (10-15 cm on each side, which in total gives 30% of the margin).

To get the number of packs of shingles required for purchase, you need to divide the area of \u200b\u200bthe slopes by the area that can be covered flexible shingles one pack (this is indicated in the technical data for each type of RUFLEX shingles). On average, this figure is 3 square meters. meters. Experts recommend adding a 3-5% margin for inevitable waste and errors during the installation process, so you should buy Ruflex tiles with a small margin.

The number of packs of ridge and cornice tiles is calculated based on the available lengths of ridges and cornices. One pack of RUFLEX ridge and cornice tiles contains 21 linear meters of cornice tiles or 17 linear meters of ridge tiles. Remains in force margin for waste in 3-5%.

The online calculator for calculating shingles does all the operations automatically.

The bituminous tile belongs to easy roofing materials. Due to the fact that it is light in weight, a powerful and expensive truss system is not required. At the same time, in appearance it is easy to confuse it with ceramics or other natural material - special shape and coloring give the roof volume and expressiveness. A variety of shapes and colors - allow you to easily fit it into the interior of the house.

What is soft tiles

This roofing material attracts the attention of buyers with its appearance. Its main feature is an imitation of classical natural coatings as well as a wide variety of colors. Despite the fact that the material itself is thin - only 3-5 mm, the roof looks voluminous. This visual effect is achieved by combining different shades in the manufacture shingles. And if the roof is used double-layer roof- it can easily be mistaken for ceramic.

Another feature is the ease of installation on roofs of complex shape. Firstly, you get an excellent visual effect, and secondly, the amount of waste will be minimal. For example, a metal tile will have many times more of them. Another plus is the reliability of the coating in places with a high risk of leakage, such as valleys, ribs and abutments.

The main strength of the material is given by its base - fiberglass. Elasticity and water resistance are ensured by the use of modified bitumen. And the original appearance- colored mineral chips.

Material advantages:

Gorgeous appearance, variety of colors and shapes.
A light weight.
Easy to install - you can do it yourself.
Does not make noise during rain, is not afraid of hail.
Suitable for almost all types of roofs, it produces little waste during installation.
Does not rot, does not corrode.
Does not conduct electricity.
Sealed. Forms a one-piece waterproof carpet on the roof.

Requires ventilation.
High price.
Bituminous roofing requires a solid base and underlayment for installation.
Doesn't handle strong temperature fluctuations.
Not durable (this does not apply to all types of roofing, for top collections, manufacturers give a guarantee of 60 years)
It can be mounted at temperatures from +5 to + 25 degrees.

In addition, soft roofing requires maintenance. At least once a year, it should be cleaned of dirt, moss, etc., and also checked for cracks after summer and winter.

Important! To move along the roof, special manholes are made, because if you walk on bituminous tiles in the heat, you can ruin it.

Tile weight

This material belongs to the category of light, which has a positive effect on the cost of the truss system. Roof installation is also not a problem - a light weight shingles allow one person to operate them. Moreover, its size is only 100 * 0.33 mm.

The weight of the roof varies depending on the shape of the shingle and the manufacturer. It fluctuates in the range of 7-25 kg. The heaviest is a three-layer roof. But, do not think that the lighter the material, the better. Average weight shingle acceptable quality is - 12-15 kg / m 2.

When calculating the roof, it is worth considering the mass of the lining carpet - 0.5-1 kg per square meter. Weight of nails - about 100 gr.

Roof characteristics

Its main component is bitumen, hence the name. In the manufacture of shingles, several types of it are used:

oxidized. Afraid of sudden temperature changes, best suited for warm climates.
APP bitumen. It is heat-resistant, does not fade in the sun, and is resistant to chemicals.
SBS modified. This type of bitumen is frost-resistant, elastic, not afraid of temperature changes, durable.

For production bituminous roofing SBS modified bitumen is most often used. It is best suited to our climatic conditions.

For the top layer of a soft roof, two types of decorative powder are used:

Basalt. The most common, the color of this powder is achieved by firing, and a more streamlined shape allows it to better adhere to the tiles.
Slate. dyed by chemical means, adheres worse to shingles, can absorb resins contained in bitumen and lose color.

Advice! It is better to make a choice in favor of basalt powder - in addition to color, it has the best technical properties. In addition, the durability of the roof depends on this layer.

There are two strength classes of material:

"A" - durable fiberglass is used as the basis, which provides high technical characteristics for the roof. The maximum warranty from the manufacturer reaches 100 years.
"C" - the base of the roof is made of cellulose, so strength and durability are less. The maximum warranty period is 15 years.

Types of tiles

There are on the market:

Single-layer bituminous tile.
Double layer.
Three-layer.

In fact, multilayer shingles are single-layer sheets glued together. The main advantages of multi-layer shingle:

Appearance. This tile looks richer and more voluminous.
Easier to mount.
More reliable, better resists the wind, you can walk on it during installation.
More manufacturer warranty.

At the same time, the cost of a multi-layer roof is usually only 20-50% more. And the weight of the roof will approximately double.

The form

Many manufacturers have specific shingle shapes, but there are also standard varieties:

Rectangular.
Oval.
Honeycomb shape.
Rhomboid.
Brick.
Shingles.

In addition to the appearance, the weight of the material per 1m2 depends on the shape of the shingle cutting.

By appointment it happens:

Ordinary shingle.
Ridge-eaves - with perforation for easy division into small tiles that cover the ridges and ribs.

Some collections provide only ordinary shingles. This is not a problem - elements of any necessary shape are easily cut out of them.

General installation rules

Naturally, the roof should serve its purpose without any problems. guarantee period and even more to follow certain rules during its installation.

The roof must have a quality base, including insulation, waterproofing, vapor barrier and ventilation.
Since shingles have different shades, all manufacturers recommend mixing the contents of 5-6 packs before installation. This allows for uniform color coating on the roof.
On the same surface, it is desirable to use roofing from the same batch with the same color code.
At outdoor temperatures below +5 C o - roofing material should be stored in a warm room and taken out in small batches, and during installation, heat the bottom layer with a building hair dryer.
In order not to damage the bituminous shingles when fitting the sheets on the roof, you need to use a wooden backing to cut it.
Material cannot be stored open sun- it will spread and stick together.

Advice! During installation, it is better to lay the shingles with the adhesive side up, otherwise, from the heat in the sun, they can stick to the roof.

Roof care

A soft roof will serve for a long time and reliably, if properly looked after. Special difficulties it doesn't have:

It is necessary to conduct a periodic inspection of the roof. Best in spring and autumn.
It is best to remove debris with a soft brush or simply rinse with water. To do this, you need to top down.
Clean up drains.
With large accumulations of snow, it must be cleaned off. At the same time, it is desirable to leave a layer of 10-15 cm on the roof so as not to damage the tiles.
At least once a year, inspect the adjoining and passing elements.

A short video about the shortcomings of the roof:

Soft roofing has long been popular among homeowners. Solid appearance, wide range of colors and choice different forms allow you to arrange without problems modern house. Bituminous roofing has high specifications and, having covered the roof with it, you can forget about repairs for a long time. At the same time, you should not save too much when buying a shingle - cheap material will last 10-15 years, after which it will require replacement.

METAL ACCESSORIES

Cornice strip KP-1/KP-2 (red, green, brown) is installed on all cornice overhangs; end strips PT-1/PT-2 along the entire length of the roof ends; junction slats PP-1/PP-2 are installed at the junction of the roof to the walls.
When calculating the required number of metal accessories, it should be borne in mind that their standard length is 2 m, the installation is carried out with an overlap equal to 2 cm.

BITUMEN TILE.

Determine the area - the sum of the areas of all its segments.
Each package of shingles contains 3 sq.m. already finished roofing carpet (taking into account the overlap during installation). Package weight - 24kg. When calculating required amount tiles, in order to avoid problems caused by insufficient material, it is necessary to take into account the coefficient corresponding to the complexity of the roof. On the most complex roofs, it does not exceed 1.05 (5%).

RIDGE-CURTAIN TILE.

The ridge/cornice tile has rectangular shape. The size of one ridge/cornice tile is 1000x250 mm. Cornice and ridge tiles are versatile and designed in such a way that they can be used in both cases. When the tile is used as a cornice (starter), it is used as a whole and mounted in a joint. In the case of using a tile as a ridge tile, each sheet is divided into three parts according to the notches, the size of each part is 330x250 mm. The tile is mounted on the ridge with an overlap. One package of ridge/cornice tiles is sufficient for installation of 12 running meters ridge, or 20 running meters of eaves.

END CARPET.

The valley carpet is designed for reliable waterproofing of internal roof fractures (valleys), which are most exposed to snow and rain loads, as well as for sealing junctions to vertical walls and pipes.
(If the roof ridge is a convex corner, then the "valley" is concave, and this corner must be covered with a valley carpet before the main installation.)
There is no special calculation for the valley carpet as such, because taken along the length directly (10 m in a roll 1 m wide).

ROOFING NAILS.

When arranging the roof, galvanized nails with an enlarged head of 30x10x2.5 mm are used. When installing a roof, all elements roofing system have, as it were, a double fixation - due to the adhesive layer and due to fixation with nails. At slope angles up to 45°, each shingle shingle is fastened with 4 nails, if the slope is steeper than 45°, then the consumption increases to 6 nails per shingle.
The ridge/cornice tiles are fastened with 4 nails.
The valley carpet and the lining carpet are fixed around the perimeter in increments of 20-25 cm.
Metal components are fixed with nails in a checkerboard pattern with a step of 15-20 cm. The weight of the nails in the package is 5 kg.
The consumption of nails in the complex can be estimated as:

BITUMEN MASTIC.

It should be noted that bituminous mastic is used for gluing the valley, sealing eaves overhangs, end parts and connections to walls and pipes. Accordingly, the more complex the roof, the more mastic is needed. Packing bituminous mastic- 10 kg.
Consumption rates:
On the end parts it is used - 100 g per 1 m.p.
For the valley carpet - 400 g per 1 m.p.
For sealing joints - 750 g per 1 r.m.
We advise you to draw your customers' attention to the fact that an increased consumption of glue than the given norms does not lead to an improvement in gluing, therefore it is recommended to adhere to the consumption norms of bituminous mastic and not exceed it.

ROOF VENTILATION.

To ensure ventilation of the under-roof space, it is necessary to equip the ventilation ridge. And in those places of the roof where there is no ridge, you need to install ventilation elements (aerators): "Standard" (with a roof slope of more than 60 °) or "Special" (~ 1 piece per 20 m2 of roof, taken into account according to the roof project). Each roof slope must have at least one ventilation element(but not less than 1 for every 60 sq.m. of the roof).

The popularity of flexible tiles is rapidly gaining momentum. This roofing material has a lot of advantages, which provided it with a whole army of admirers. The covering differs in high esthetic indicators, reliability, durability. Flexible shingles are great for complex roof structures that are not easy to decorate with rigid materials. It is easy to install. The creation of the coating is carried out using special mastic and roofing nails. It is worth paying attention to the preliminary calculation of the consumption of these materials. This will avoid extra costs, eliminate the need to stop the installation due to lack of nails or mastic.

Consumption of mastic in the installation of a soft roof

In the installation of flexible roofing materials, bitumen-polymer mastic is used. This tool is made on the basis of bitumen with the inclusion of:

styrene-butadiene thermoplastic elastomer,

filler,

solvent

technological additions.

The material is a homogeneous adhesive mass, securely fixes tile sheets on brick, metal, wooden surfaces. Mastic can be packed in cartridges or metal cans. The material is applied with a spatula, a special rolling roller eliminates the appearance of bubbles, wrinkles.

The thickness of the mastic layer should not exceed 1 mm. Do not dilute the product with solvents, this will cause blisters, smudges. Approximate consumption of this material depends on the area of application.

In sealing the adjoining sheets, approximately 750 g is spent per linear meter; on the end sections, about 100 g of mastic is consumed per linear meter; in the creation of the valley carpet, 400 g of material per linear meter is used. These norms will help to make an accurate calculation of the cost of funds, purchase right amount mastics.

Consumption of nails in the creation of roofing shingles

Tiles of flexible tiles are fixed to the base with special roofing nails. These fasteners differ in hats large diameter. This feature of the design eliminates the rupture of the material, guarantees high-quality pressing of the sheet to the base. Roofing nails are made of steel alloys, coated with a layer of zinc to prevent rust. The calculation of the required number of nails can be done based on the number of sheets of tiles or the area of \u200b\u200bthe roof.

If the slope of the slopes is up to 45°, each shingle is fixed with four nails. When creating roofing on roofs with slopes of more than 45°, tile tiles are fixed with six fasteners. This guarantees reliable fixation, excludes damage to the roof during strong gusts of wind. You can calculate the approximate consumption of roofing nails by roof area. Experts recommend purchasing fasteners in the amount of 256 grams per 1 m 2.

Admirers of accurate calculations of the consumption of all materials in the creation of a soft roof can use a special computer program. Data used:

geometric shape of the tile;

the direction in which the laying will be carried out;

useful width of the tile;

sizes of overlaps, cornice overhangs, ridge ceilings.

The introduction of these indicators into the program allows you to calculate the necessary materials, get the result.

All of the above methods allow you to plan future expenses, determine the amount of materials. However, practice shows that the most accurate calculations can only be done by qualified personnel. It is worth entrusting this work to professionals.

An important stage during the construction of a building is the development of cost estimates and a plan for future coverage. At this stage of work, it is imperative to make a calculation of the soft roof, how much material is required and determine its location. In order for the calculation process to be accurate and easy, you need to use the roof calculator.

Settlement rules

The calculation of flexible tiles in the construction of a roof primarily depends on finding an ideal balance between resource consumption, as well as sustainability, the duration of the period of use of housing construction.

Important! It is worth paying attention to reduce the risks of unplanned costs for subsequent repair work or for unscheduled maintenance, it is recommended to make accurate calculations and avoid errors.

In order to perform the correct calculation of soft tiles, it is worth considering important rules:

For the qualitative use of the roofing material calculator, it is necessary to accurately measure all the roofing parameters of the structure under construction;
It is advisable that before using the calculator it is worth adjusting all dimensions in the design and estimate documentation with the dimensions of the already built house box;
As soon as an accurate calculation is made, you can start purchasing the necessary building products that will be used to cover the roof;
One more necessary condition consists in checking the geometric parameters of the roof under construction.

roof calculator

Important! In order for the soft roof to be durable and warm, it is imperative to equip the rafters and the pie before installing the tiles. The cake must be laid in several layers, which must fully ensure required level waterproofing, thermal insulation.

The calculation of the roof can be carried out using two methods:

Independent calculation of the required amount of roofing;
Carrying out the calculation of a soft roof with an online calculator.

Of course, the most simple and the easy way Calculating the required amount of roofing is the use of an online calculator. This method helps to determine the exact amount of coverage needed for the roof of your home.

The size of the area of the slopes;
Dimensional criteria for valleys;
Connection dimensions;
Dimensions of cornices;
Skate length indicator.

Calculation features:

First of all under soft tiles it is necessary to lay lining coating. If this constituent element does not exist, then the quality of the future roof will decrease significantly, and it will last relatively long. long term;
To find out the required number of rolls of carpets for lining, it is necessary to divide the area of \u200b\u200bthe slopes by 15-20 sq.m - this indicator depends on the type of material chosen with a self-adhesive surface or with edges with a sticky structure;
AT without fail the method of laying the lining edge is taken into account. If produced vertical laying, then in a mandatory order, an overlap is performed on the area of \u200b\u200bthe roof ridge. If horizontal laying is performed, then it is the most economical;
It is necessary to take into account the allowance for the overlap of the material, approximately 10-15 cm on each side, which results in somewhere around 30%;
To find out the exact amount of materials for roofing, it is necessary to divide the area of \u200b\u200bthe slopes by the size of the area that is covered with one pack of flexible roofing. Usually this figure is about 3 square meters. Many manufacturers recommend adding 3-5% of the stock to this indicator;
The dimensions of the valley cover are calculated quite simply - it usually lays in the area of grooves, its width is a maximum of 0.7 meters and a length of 10 meters;
Calculation of ridge-eaves materials is performed according to the lengths of ridges and cornices.

If the roof is equipped independently, then when calculating it is necessary to take into account all of the above requirements. This is the only way to determine the exact amount of material to cover the house.

If calculations are made in online calculator, then for this you need to know the indicators of the following data:

The area of the roofing material;
The size of the length of skates, ends, junctions, cornices, valleys.

With the help of automatic calculations, you can find out the exact parameters of the coating for arranging the roof. It is important that flexible tiles completely cover the entire surface, but at the same time ensure their main purpose. Therefore, when calculating the required number of these products, it is necessary to take into account all important criteria roofs.

Unlike sheet roofing materials, for the correct calculation of the amount of flexible tiles, it is enough to know the area of \u200b\u200bthe roof, since the number of square meters is indicated on each package of roofing material. meters of covered area. Additional elements are calculated by analogy with. Consider on concrete examples methods for determining the amount of bituminous material and its components. The instruction is relevant for any manufacturers of bituminous roofing: Shinglas, Katepal, Tegola and others.

Components of flexible tiles: purpose and calculation

Before starting the calculation of the roof, we will understand the purpose of the additional elements of flexible tiles. The names and types of components for flexible tiles are slightly different from the finishing elements of metal tiles, but in general they have similar areas of application.

In a soft roof, metal strips are also used for finishing: wind, eaves (drop), adjoining strip. They have a slightly different shape, but are similar in purpose to extensions for metal roofs. Consider the most common of them.

The presented additional elements of bituminous tiles have a standard length of 2 meters. To calculate the metal strips, you need the total length for which this or that apron will be installed divide by 1.9 meters(usable length of each plank including overlap).

Names and sizes of metal bars may vary slightly.

The most important element in the construction of a soft roof is lining carpet. It consists of bitumen and is an additional waterproofing of the roof in case of damage to the main roofing. bituminous material fit over the entire area of the roof on moisture resistant boards OSB (OSB - oriented strand board) or moisture resistant plywood with a minimum thickness of 9mm. Lining carpet mounted horizontally, from bottom to top with an overlap of 100-150 mm.

In the case of a roof structure with inside corners slopes, a special valley carpet. As well as underlayment, it comes in roll form, but the material itself is thicker and has different color variations to match the tone of the shingles. The valley is one of the most vulnerable places in the roof, so you should not neglect such material. The valley carpet is laid along the entire length of the intersection of the roof slopes.

The lining carpet is calculated based on the roof area with a small margin (about 10%) for overlap. Carpet for the valley must be calculated based on its length. If the length of the valley is 10m, then the carpet must be purchased with a length of 10 linear meters.

The above materials are the main components necessary for the installation of a roof made of flexible tiles. Additional elements may be needed in case complex shapes roofs.

Additional accessories for shingles

For a bitumen roof, unlike a tiled counterpart, it is made of durable plastic, has a special gap for air ventilation under the roof and foam inserts as a barrier against atmospheric precipitation or insects.

Ventilated roof tiles

A ridge tile is attached on top of such a plastic accessory.

alternative ridge valve are roof aerators or KTV valves. There are various shapes, but the principle of operation is similar - ventilation of the under-roof space to prevent the formation of dampness and mold in roofing cake, which means protection wooden structure and OSB (OSB) boards and the entire structure of the roofing system.

Different kinds roof aerators

With a long slope length (more than 10 m), calculated from the upper to the lower point of the roof, it is necessary to install both a ventilation duct and aerators. Otherwise roof ventilation won't work properly.

To protect against the penetration of insects or birds under the roof, a mosquito net .

Vent. pvc tape

It can be made of aluminum or plastic ( pvc ventilation tape). The element is fastened with conventional wood screws. When installing shingles, many neglect this element despite its low cost, which in the future can lead to unpleasant consequences.

Calculation of snow retainers for a soft roof

To prevent snow avalanches, it is recommended to install snow retainers(snow stops). For flexible tiles, a special design is used in the form of a small hook. The elements are installed in a checkerboard pattern and fastened with wood screws into special holes on the plate.

For bituminous tiles, it is necessary to install a snow retention system at the time of installation of the roof, since part of the element is inserted under the tile sheet.

Snow guard for shingles

To find out how many snow guards are needed in the case of a soft roof, we use the rule: on slopes with a slope of 30 - 40 degrees, snow guards are installed in the lower part of the roof - 4 pcs. for 1 running meter, and with a roof slope of 40 to 70 degrees - 6 pcs. by 1 r.m.

Scheme of installation of snow retainers

Calculation of flexible tiles for a gable roof

To calculate the amount of soft roofing for a gable roof, you need to know the dimensions of the roof slopes. In this case, each slope will be a rectangle with sides a=10 m, b=6 m.

Gable roof dimensions

Attention! For a quick calculation, we suggest using ours.

According to the formula S \u003d a * b, we calculate the area of \u200b\u200beach slope. If the slopes are the same, as in our example, we get the roof area Skr.=2*a*b=2*10*6=120 sq.m. Flexible tiles must be purchased with a small margin (about 5%), so the amount of roofing for a gable roof is 126 sq.m. OSB board or moisture-resistant plywood is considered for the same area. In the case of a lining carpet, add another 10 square meters. meters to cover.

The universal formula for determining the number of packages of soft bituminous roofing for a simple roof structure: Roof*1.05 / Spacking

Approximate calculation of bituminous mastic - 5 liters per 60 - 70 square meters. meters of roof. For our area we get about 10 liters.

Now let's proceed to the calculation of components and accessories. Depending on the manufacturer ridge eaves tiles issued various lengths overlap, but for most manufacturers, one package covers 12 linear meters of the ridge and 20 linear meters. meters of eaves. For our dimensions, the length of the eaves is 20 meters (10 meters on each side), i.e. 1 package. Plus one more pack for the skate, the length of which is 10 linear meters. meters. In total, we get a package "ridge / cornice" in the amount of 2 pieces.

Note that for laminated (two- or three-layer tiles) there is no need to purchase cornice tiles, since the lower rectangular layer of the roof already performs its function.

The ventilated ridge is calculated according to the formula: ridge length / vent length. skate. That is, we divide 10 m by the length of the vent. skate (each manufacturer has different sizes). For such a gable roof, ridge fans will be enough. If the roof has a larger area, additional aerators must be added - one aerator for about 40 square meters. meters.

Metal strips have a standard length of 2 meters. The number of wind (front) planks S5 is calculated by the formula: 24 / 1.9 = 13 pieces, where 24 is the total length where the wind aprons will be installed (6m x 4), and 1.9m is the useful length of each plank, taking into account the overlap .

The cornice strip (S1 and S27) is calculated in the same way. 20/1.9 = 11 pcs. In this option, there are no adjoining roofs with a wall or a chimney, but the calculation will be made according to the same formula.

An aluminum mosquito net or PVC tape is mounted in the cornice area, so their length will be equal in our case to 20 linear meters.

The procedure for calculating roofing nails is as follows: 0.5 kg per 10 sq. meters of roofing (or 4 pieces per sheet). For the presented sizes about 6 - 7 kg.

Let's summarize the calculation in the table:

An example of calculating a soft roof for a four-pitched hip roof

For a hip roof, the calculation of the amount of flexible tiles is carried out in a similar way. First of all, we find out the area of \u200b\u200bthe roof and, adding 5-7%, we get the amount of soft roofing. We also consider OSB (OSB) and lining carpet.

hip roof dimensions

The roof consists of two trapezoids and two triangles. We calculate the area of a trapezoid using the formula:

Strap. \u003d (a + b) * Htrap. / 2 \u003d (3 + 12) * 5/2 \u003d 37.5 sq.m

The area of a triangle is:

Straug. \u003d d * H triangle / 2 \u003d 10 * 4/2 \u003d 20 sq.m

Adding up all the areas, we get a roof area of 115 sq.m. For the roof, we take with a small margin of about 123 square meters. meters, and for the lining carpet - 135 sq.m.

There will be more ridge-cornice elements due to the presence of not only the upper ridge, but also side ribs. In the lower part, along the entire perimeter, a "ridge / cornice" is also laid, with the exception of the laminated roof. We get that to cover the ridge, you need a length of 4 * c + a = 35 meters (3 packs), and for a cornice 2 * b + 2 * d = 44 meters (3 packs). Vent. we rely on the skate only on the upper (horizontal) part of the rib. For proper ventilation air under the roof we add 6 aerators: 2 pieces for trapezoidal slopes and one for triangular ones.

The second difference from the gable shape is the absence of wind slats, but the number of cornice aprons is added around the entire perimeter of the roof: 44 / 1.9 = 24 pcs.

We also need a little more mastic and nails for sealing ridge tiles and its attachments. Otherwise, the calculations of the soft roof are no different from those described above. In conclusion, we also give a table with indicators of the required number of flexible tiles and accessories.

Important: the measurement of the roof should be done as accurately as possible!

We hope the article turned out to be useful and answered the questions of how to calculate flexible roof tiles yourself without the help of online calculators. Note that the process of determining the amount of bituminous roofing must always be done independently, since special resources mainly offer a superficial result, not taking into account additional accessories and stock of material.

Categories

Popular