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This manual provides all necessary information concerning the installation of roofing. Read the instructions carefully before starting work.
Measurement and calculation
Profiled steel sheets are supplied in custom sizes. As a rule, the length of the slope is taken as the length of the sheet. The sheet is always mounted to the base so that its edge protrudes 40 mm above the eaves - then there is a sufficient gap on the ridge for ventilation. Make a calculation according to the drawing. But still, measure the prepared crate design. Measure the slope diagonally to make sure it is square. The right amount sheets are easy to calculate by dividing the length of the eaves by the useful width of the sheet.
hipped roof
When calculating a hipped roof, you need to make a drawing on graph paper and calculate each sheet. Ruukki metal tiles have a capillary groove on the left side of the sheet. The remains of sheets used on one slope cannot be used on other slopes (unlike conventional roofs).
ledge
The transverse profile drawing implies a certain step. Therefore, for quality installation sheets protruding beyond the cornice of the main slope, you need to correctly calculate the length of these sheets. The length of the sheet must be selected, remembering that this length must be a multiple of:
- ELITE 400mm
- MONTERREY 350mm
- CASCADE 300mm
To avoid calculation errors, please contact Ruukki specialists.
Profile sheet type Monterrey.
- useful sheet width - 1100 mm
- cornice length 18500 mm
- number of sheets 18500 mm: 1100 mm = 16.82
Means: 17 pcs x 2 = 34 pcs
Attention: sheets different type- different useful sheet width:
- ELITE 1025 mm
- MONTERREY 1100 mm
- CASCADE 1050 mm
Programs specially designed for this will save your time and money, and experienced managers will be able to take into account all the wishes regarding the arrangement of the roof of your home.
Ventilation
Warm air from the interior rises and condenses in the form of moisture on the cold inner surface of the profiled sheet. To avoid this, it is necessary to perform thermal insulation of the interior, carefully perform waterproofing under the crate, ensure good ventilation. For good ventilation, waterproofing is done so that the air stream can freely pass from the cornice under the roof ridge. Ventilation openings are installed at the highest point of the roof. The waterproofing material (film) is overlapped from the eaves to the ridge above the insulation on the rafters with an air gap of at least 50 mm between the waterproofing layer and the inner surface of the roofing sheet. The slats of the counter battens serve as a fastening element of the waterproofing film. Warehouse rooms and cold attics are ventilated through the end windows. In particular damp rooms must be forced ventilation.
How to handle metal tiles
Storage
Sheets of metal tiles with one or another coating can be stored in their original packaging for 1 month, placing bars of about 20 cm in increments of about 0.5 m on level ground under the package. taking the edges along the length. Be careful not to cut your hands on the sharp edges of the sheets.
Additional processing
Although the profiled sheets are made to the dimensions of the slope, they have to be cut manually during installation. It is convenient to cut the sheet along the length with a hacksaw or scissors. If it is necessary to make a diagonal cut, then a hand-held electric saw with carbide teeth is used for this. Attention! The use of grinders with abrasive wheels is prohibited.
leaf care
The sawdust formed when cutting the sheet or when drilling must be carefully removed, otherwise the metal chips will rust and ruin the coating. If during installation work the surface of the sheets is contaminated, then the dirt can be easily washed off with a soft detergent. Particularly strong cleaning agents can damage the polymer coating layer.
Coloring
If during transportation or installation the metal tile was subjected to heavy loads and scratches formed on the surface, then it is necessary to tint these places special paint supplied by Ruukki. When making diagonal cuts during installation, the protection of steel against corrosion is violated. Therefore, always tint the edges of the cut sheet.
Lathing installation
When marking the boards of the crate, contact the designer. Boards 32 × 100 mm are used for the crate, they are installed at the required interval, depending on what type of tile is being worked on (see the figure). The board facing the cornice should be 10-15 mm thicker than the others.
Sheathing and lining
Attention! Wooden slats the battens are always mounted on top of the battens of the counter battens. When installing the batten under the roof, it is always recommended to use a waterproofing material for laying. The waterproofing material must absorb moisture from the thermal insulation side. The RANKKA TAK anti-condensation film perfectly meets this requirement.
The end plate should be higher than the crate by a height profile sheet(dimension X - see picture).
- MONTERREY 40 mm
- ELITE 60 mm
- CASCADE 45 mm
Check out the drawing!
Sheathing boards are nailed to the rafters with galvanized nails.
In order for the ridge plank to be well fixed, two additional wooden slats are installed under it on both sides.
eaves plank
The LR eaves strip is fastened before the roofing sheets. 100 mm is enough for an overlap. The bar is fixed with galvanized nails with a distance of 300 mm. To cut the sheet, use scissors for metal.
Installation of roofing sheets
Installation of sheets can be started from any end on a gable roof, and on a hipped roof, one should begin with the installation of sheets at the highest point of the slope and move, evenly laying the sheets, in different sides from the first sheet. The capillary groove of each sheet must be covered by the next sheet. In sheets of various types, the capillary groove is located:
- ELITE on the wave of the left edge
- at MONTERREY on the wave of the left edge
- at CASCADE on the left edge.
It is more convenient to start laying sheets from left to right, because this makes it possible to install a loose sheet, slipping it under a previously fixed sheet. The edge of the sheet is installed along the cornice and fastened with a protrusion from the cornice by 40 mm. Install the first sheet on the slope and secure it with one self-tapping screw to the crate under the ridge. Then lay the second sheet so that the bottom edges of the sheets are straight line. Fasten the sheets together with one self-tapping screw, installing it in the crest of the wave under the first transverse step of the metal tile profile. For exact joining of sheets along the length, one sheet should be lifted, and then, slightly tilting it, lay step by step, turning Special attention on the accuracy of compliance with the metal pattern. This should be done from the bottom up, fasten the sheets together with self-tapping screws, which are placed in the crest of the wave under each step. Having fastened together 3-4 sheets in this way, align the resulting lower edge strictly along the eaves. After that, the sheets can be attached to the crate by placing self-tapping screws in a zigzag pattern. This mounting method ensures that visible joint between sheets throughout the entire area of the roof.
Fastening sheets to the crate
Profile sheets Monterrey, Elite, Cascade are always fastened with self-tapping screws. In working with self-tapping screws, an electric drill with a nozzle (socket) for screws is very convenient. Self-tapping screws with a sealing washer RA 4.8×28 are installed at the lowest point of the metal tile wave under the transverse step of the profile. 6 self-tapping screws are required per 1 sq.m of the profile, given that the sheet is attached along the edge only in every second wave.
Places of overlap along the length
In places of overlap, the sheets are installed according to the transverse pattern (usually 100 mm is enough for an overlap) and fastened as indicated above. Each case is recommended to be dealt with separately.
How to move on a profiled sheet
It is necessary to walk along the profile carefully in shoes with soft soles and step only in the places of the crate and in the deflection of the wave.
Internal joint
The internal joint on roofs having the shape of the Latin letter L is performed with the installation of a valley and valley overlays. First mounted solid wooden structure with waterproofing, and then the valley bar is installed. Sealing the gap between the roofing sheet and the internal joint is carried out using a special sealant.
For internal joints, Ruukki's standard LSJ gutter strip is also available. The overlap of the planks for the groove must be at least 150 mm. An LSJP valley trim can be mounted on the inner joint. It is fastened without seals, with rivets or self-tapping screws along the top of the profile wave with a distance of 300-500 mm.
The end plank LP is fixed to the wooden base with screws. If the base is made according to the instructions (p. 9), then the end plate easily covers the end over the profile wave.
The ridge strip is installed at the very last moment, when all the roofing sheets are installed and fixed, the ridge seals are in place. At correct installation all self-tapping screws installed at the top of the sheet and seals are covered with a ridge strip and are not visible from the outside. The roof ridge strips are fastened to every second profile wave with screws, and the end caps of the round ridge are fastened either with screws or rivets. , as a rule, is bifurcated by a special skate overlay. The fastening of such an overlay is carried out using self-tapping screws.
Rolling snow in unwanted places, such as above the entrance, can be prevented by using the VLEN snow guard (mount included). The snow guard is mounted under the second transverse step of the metal tile, i.e. with a distance of approx. 350 mm from the cornice. Instructions are included with each kit.
Elements of through exits are made of plastic and processed to match the color and pattern of metal tiles, so their installation is not difficult, and they do not spoil the appearance of the roof. .
All gaps between the elements of through outlets and roofing sheets should be sealed.
Sealing tapes
When installing Ruukki metal tiles, sealing tapes are used only under the ridge and at the joints of tent-shaped roofs. If the roof base is already made with waterproofing material, then sealing tapes are required only for internal joints. In places of overlapping seams and through exits, silicone mass or other sealant can be used for sealing. Sealing tapes are carefully nailed to the profile with small nails, only then the ridge or joint is covered with planks.
stairs
The ladder is fixed so that the upper step is at the level of the eaves, and the distance from the ground to the first step is about 1000 mm. A minimum distance is left between the ladder and the wall. in 200 mm. Ladders are attached to the wall of the building. The handrails are fixed with the help of special. fasteners.
transition bridges
Transition bridges are attached to the roof, the slope of which is greater than 1: 8. Fastenings for the bridge are fixed with screws through the metal tile to the additional base (during the marking of the crate, take this moment into account). The distance between the fasteners is about 1000 mm.
Roof stairs
The stairs are fastened to the roof with screws through the sheet to the crate. And if required - then to the wall stairs (to the base on the handrails.
Gutter system
By purchasing roofing material, do not forget about downpipes and gutters. Ruukki offers its customers semi-circular and rectangular gutter installations. The installation of the semi-circular gutter is mainly described here. Before fixing the gutters - paint all the cornice exterior boards. Gutters can be mounted parallel to the eaves. When calculating required amount downpipes and gutters, remember that one downpipe must be installed per 100 square meters of roof area. In the case when the roof slope is more than 30 degrees, it is necessary to provide two downpipes, even if the area is less than 100 square meters. The more complex the roof from an architectural point of view, the more accurately you need to calculate the number of elements of the drainage system.
Hooks for gutters
Hooks for installing the gutter are mounted in such a way that a gap of 25 mm remains between the line continuing the roofing sheet and the upper edge of the gutter. The first and last support hooks should be installed at a distance of approximately 150 mm from the end of the roof eaves. The gutter must be given a slope of 2 to 5 mm per linear meter, using a marking cord. Hooks are recommended to be placed at a distance of 900 mm from each other. In places where the gutters are connected to each other using a corner element, additional hooks should be installed. This will make the gutter structure more rigid.
Gutter fixing
The chute should be installed by pressing the rear edge against the support hook until it stops, after which the front edge of the chute should be put in place. The gutter must be put in place as precisely as possible, since if the gutter is displaced, the polymer coating can be damaged.
Put two gutters butt-to-butt and put on top the connecting element that has a latch. In case of connecting rectangular gutter, insert one gutter into another, connect them with rivets, treat the joint with sealant.
The ends of the gutter are closed with plugs, the plugs are fixed with self-tapping screws or rivets. Treat the joint with sealant. The plug can be attached to the gutter after the gutter is in place.
Water receiver installation
The gutter and the downpipe are usually connected with a water receiver, and in places of a large descent of water - with a funnel. The hole for mounting the water receiver from the gutter into the pipe is easy to cut in the right place. On a semi-circular gutter, a V-shaped cut must be made. On a rectangular gutter, an X-shaped cut is made and the corners of the cut are bent outward of the gutter. The receiver is installed in place of the cut, starting from the leading edge. In places of overlap, silicone is also used along the entire contour of the junction. The receiver must be attached to the chute before the chute is finally placed on the support hooks.
Mounting installation
Ruukki offers 2 types of gutter mounts - inserted into drilled holes (for stone wall) and wall (for stone and wooden walls). The drain pipe is fixed with special holders to the wall of the building with a maximum distance between the fasteners of 1900 mm. If there is a joint on the pipe, then an additional holder should be left in this place. The distance between the ground and the end drainpipe should be min. 300 mm or between the blind area and the pipe 150 mm.
The fixing wedge of the pipe holder is installed using an ordinary hammer.
Gutter system maintenance
To ensure a long service life of the gutter, you need to regularly monitor the condition of the gutters and pipes. The gutters, end caps, pipes and their connections must be checked every year. Leaves and other debris accumulated in the gutters should be removed periodically. To prevent leaves from falling into the gutters, we recommend using special protective nets on the gutters. Contaminated areas should be washed with a soft brush and water. Pressure washing can also be used (pressure
bends
The drain pipe can be easily reduced - use a hacksaw for this. The junction of the knee and the downpipe is securely attached to the wall.
According to termoizol.com
The metal tile is one of the most demanded roofing materials. One of the most important elements of their roof this material are planks for metal tiles.
They provide reliable and long-term operation of the entire roof of the house. This article will talk about why we need metal roofing strips, as well as how to install them.
For the manufacture of wind and cornice strips, materials similar to the main roofing material are used. They are based on galvanized steel with polymer protective coating. The thickness of the steel is 0.4-0.5 mm.
Planks for metal tiles perform the following functions:
- eaves plank for metal tiles has an oblong shape. The technology of its manufacture is similar to the main roofing material. Its main purpose is to protect the frontal board for the roof from moisture in heavy rain. Consequently, the cornice strip also protects the under-roof space from moisture. This element is fixed at the ends of the roof slopes.
- End plate provides protection of the crate from the effects of water, and also levels wind load. Therefore, this element is also called a wind bar.
- junction bar. It is a universal element that performs protective and decorative functions.
The ridge strip protects the under-roof space from precipitation in the area of convergence of roof slopes. It can take many forms.
Fixing the eaves
The fastening of the cornice strip to the roof joints is carried out as follows:
photo of the installation of the cornice strip
- The first step is to mount the front board. It is fixed to the ends of the roof frame with galvanized nails. Instead, a cornice board is sometimes installed. This element is fixed in special grooves on the rafter system.
- The next step is stitching. For these purposes, a corrugated board or grooved board is used. When filing the cornice overhang, a support beam fixed to the wall of the building is used as the second support.
- Before installing the cornice strip, the brackets necessary to fix the drain are mounted. They are fixed on rafter legs or on a cornice board.
- Next, install the eaves bar. Its installation is carried out before laying the roof of the metal tile. The plank is attached over gutter mount with the help of self-tapping screws, which are screwed into the frontal or cornice board. The distance between the screws should be from 30 to 35 centimeters.
The extension of the eaves strip must be overlapped. The overlap should be 100mm.
End plate installation
After laying the roof from the metal tile, the end plate is installed. Its installation is carried out as follows:
end plate installation
- Installation of the wind strip is carried out at the level of the wave of the nearest roofing sheet. In this case, the corner of the end of the roof must be completely blocked.
- The fixation of the end plate is carried out from above and on the sides. For these purposes, self-tapping screws are used. The installation of the strip from above is carried out in the crest of the wave of the metal tile.
- The extension of the wind bar is carried out with an overlap of up to 100 millimeters.
- The joints between the roofing material and the plank must be sealed.
- The end plate performs not only protective functions, but also decorative. This element must necessarily overlap the crest of the wave of roofing sheets. Otherwise, water may get under the metal tile. To do this, the edge of the sheet of roofing material is bent up.
How to install a ridge rail
When installing the ridge bar, first of all, it is necessary to check that all necessary work for under-roof ventilation. To prevent snow from falling under the ridge, special strips are installed on the gentle slopes of the roof.
photo of the ridge bar
The installation of the ridge bar should start from the end. The roofing ridge is laid on top of the end strips, and the outlet is also made outward by about 20-30 millimeters. Elements of a flat roof ridge must be overlapped. The overlap should be 100 mm. If the elements of the ridge have a semicircular shape, then they should be connected along the stamping line.
If the angle of inclination of the roof exceeds 45 degrees, then the place of attachment of the ridge board, as well as the methods of fixing the roof ridge, may differ significantly depending on the slope of the roof slopes. At the stage of installation of the lathing, it is necessary to simulate the installation of the roof ridge. In this case, the angle of inclination of the roof, as well as the shape of the ridge element, should be taken into account.
This installation method has become popular due to its affordability and simplicity. If the angle of inclination of the roof and the ridge strip do not match, they are corrected with a bench tool. Upon completion of the installation of the ridge rail, which has a semicircular shape, its plug is made on both sides with the help of special accessories.
Installing the junction bar
Installation of the junction bar should be carried out after laying the roofing and installing the wind bar. With the help of this element, the valley carpet is fixed on vertical planes.
The junction bar is also used at the junction of the roofing to ventilation ducts and chimney. In these cases, it acts as a sealed element. The junction bar is mounted upon completion of the construction of the roof of the house.
This element also performs decorative functions. It gives the roof an attractive look.
Where should you buy accessories?
In order for the roof of the house to have an attractive appearance, it is necessary to install roofing materials of the same color and style. Therefore, experts advise purchasing sheets of metal tiles a few pieces more than required.
The fact is that exactly the same roofing sheet, but from a different batch, may have a different shade. And this will affect the appearance of the roof. The same can be said about the additional elements of the roof.
If they are purchased elsewhere, their shade may not match the shade of the metal tiles. For this reason, wind and cornice strips for metal tiles should be purchased in the same place as the main roofing material.
It should be noted that most of companies that manufacture metal tiles give a guarantee for their products only if high-quality additional elements are installed on the roof.
In order to avoid problems with the guarantee, it is better to buy all roofing elements in one place. Price 1 running meter cornice strip is from 100 to 200 rubles, depending on the coverage.
Video on how to install the bar:
And the ridge of the roof are different concepts, although they are often combined into one. When 2 slopes are closed, a roof ridge is formed. It may simply look like a bar laid vertically on racks. The legs of the rafters rest on the timber. Vertical racks in turn rely on ceiling beams overlap.
The ridge device can also be made in another version, when triangles are longitudinally connected to each other truss system. At the highest point on the rafters on both sides of the roof, boards are sewn to each other at an angle and thus form a ridge. - ridge covering of the gap formed at the upper extreme point of the roof during the laying of roofing materials on the roof slopes. The ridge can be made of the same material as the main roofing - slate, metal profile, ceramic tiles, metal tiles, galvanized steel, bituminous tiles, etc.
Scheme of the arrangement of the elements of the ridge: 1 - additional laths of the crate, 2 - hydro-barrier, 3 - metal tile, 4 - wind board, 5 - sealant of the ridge, 6 - plank of the ridge.
Behind the beautiful fabulous name "skate" lies a lot of difficulties and worries. It is good that today manufacturers put on sale a sufficient number of special additional elements that have been made roofing on the uppermost section of the roof is much easier. Let's take a closer look at how to implement. To install and fasten the ridge strip and the roofing material itself, you will need the following tools:
- electric saw;
- electric drill;
- hacksaw;
- metal scissors;
- roulette;
- screwdriver with a special nozzle for screwing roofing screws.
Sheets of tiles can be cut with a hand saw for metal or with the help of a specialized electromechanical tool designed for cutting materials with a polymer coating.
Types of ridge bar
A roof ridge is more often called a ridge strip with various forms:
- curly;
- semicircular;
- angular;
- embossed;
- conical;
- rib.
The installation of the ridge is carried out at the final stage of the roofing work with the obligatory laying of ventilation material that protects the space under the roof and protects the ridge beam from moisture and precipitation.
As a protective layer, a special sealant is used, or, for example, mineral or glass wool, as well as other materials. Be sure to ensure that the space under the ridge bar is not densely filled in order to avoid the destruction of natural ventilation. Therefore, the ridge bar should never be sealed with mounting foam or other sealed materials. To calculate the material that will be needed for, including its frame, you need to know the height of the ridge. The height of the roof ridge depends on the angle of its inclination. A table with coefficients will help in calculating the height of the ridge if the roof slope and the width of the building are known.
The device of the roof ridge depends on the roofing that will be used during installation. When choosing a roofing material, you need to think right away how the ridge will be mounted. When installing and fastening the ridge, you can not do without a ladder. It is better to install the ridge bar together, in compliance with all precautions and safety precautions, since work on it is quite laborious and dangerous. The device of the ridge begins with the fastening of the extreme elements. Before proceeding with mounting the ridge on the roof, pull the cord to adjust the horizontal laying of all ridge elements. The skates are fixed with self-tapping screws with special washers that prevent the penetration of moisture into the joints.
Types of skates for the roof
For a roof covered with sheets of metal tiles, the ridges are made of profiled sheet metal in the form of an outer corner. They are edged on the inside along the edges with pressed folds of 1.5 cm. To complete everything you need for a metal tile, you should take into account all additional elements, accessories and additional details: special fasteners and sealing washers that ensure proper tightness and prevent roof leakage.
Usually additional accessories are selected from the same material as the main roof, in compliance with the color and architectural style. To make a skate on pitched roofs various buildings, use metal roofing strips. If the ridge is properly mounted for the metal tile, it is almost invisible on the roof. Such an element is installed quite often using additional ventilation parts. In their form, the roofs have differences, and therefore the types of additional elements are divided into types:
- Semicircular. Installed at the joints of the slopes. At the ends it is closed with special plugs that give a finished look.
- Rectangular. This type of device is used for pitched roofs. various types from metal tiles. Cheaper than semicircular and do not require plugs. Outwardly, it looks a little worse than the previous one.
- Narrow decorative. It is used, rather, for an aesthetic appearance, rather than to increase functionality. It is used in the construction of hipped roofs, spiers and arbors.
- Curved ridge elements with a straight or gable end.
- T and Y-shaped. Used to fasten straight skates adjacent to each other.
- End additional elements are used to cover the gables.
Seals for accessories
Skate seals are important element gutter for metal roofing. Thanks to them, the ingress of precipitation into the roof is reliably prevented and attic space. Those who live in a private house most likely encountered water leaks through the roof, as a result of which it became necessary to perform repair work. Experts believe that such difficulties arise only if a low-quality roofing was laid. But the reason is not only this.
This complexity can be eliminated by reliably sealing the upper edge of the roof, and this must be done with the help of seals. As a result of applying such additional element isolated interior at home, and the service life of the truss system and thermal insulation material will last considerably. Based on the foregoing, it is recommended to place seals in front of, as well as between the ridge and the base of the roof. This is especially necessary for hipped roofs and areas where the ridge is mounted diagonally to the roof slope.
Manufacturers today produce 3 types of seals: universal, self-expanding and profile. profile view differs in the feature that the basis for it is foamed polyethylene. Universal seals are made from polyurethane foam, which works like a regular filter: air can easily pass through the thickness, but at the same time, the accumulation of excess moisture is prevented. It does not let dirt and snow under the roofing sheets. A variety of self-expanding sealant is made from polyurethane foam impregnated, as a rule, with an acrylic polymer. For convenient installation on the surface of this type of sealant there is a self-adhesive area covered with protective strip. This type of seal is great for filling any gaps.
The device and fastening of the skate
The ridge installed over the roofing of the metal tile has the only purpose - to close the upper edges of the roofing sheets of the coating and to securely tie the slopes of your roof. It is recommended that the width of the shelves of the corner of the ridge be selected at least 15 cm. Otherwise, strong winds in winter can sweep in attic space snow. In addition, it should be mentioned that ridge battens that do not have a bead are not sufficiently rigid and, after installation, they do not have too much bottom. good view. For the length of the roof, first you need to make a calculation and purchase a set of metal skates. In the calculation, do not forget to take into account their mandatory overlap of at least 5 cm on each other. Before starting roofing work, you should prepare a ladder and insurance, as well as all necessary tools. You will need a construction cord. be carried out in several stages. The area where the top edges of the roof meet should be checked to make sure the ridge axle is level.
Stages of installation work
- A slight degree of curvature up to 2 cm cannot affect the ridge, however, if deviations are more significant, they will need to be corrected.
- Even for additional elements with a shelf width of more than 20 cm, one should not forget to lay a light layer of glass wool in the grooves of the ridge. But you can’t overdo it with a sealant, otherwise you can disrupt ventilation.
- You can use industrial seals, but such materials are quite expensive.
- With the help of a serving assistant, it is necessary to pick up the ridge corner in two directions.
- The material of the ridge strip must be laid along the outer edge of the roof ridge flush with the last of the cover sheets. It is necessary to ensure that there is no excess vertical clearance, and be sure to observe the proportions.
- partner at the same time opposite side roof must ensure that the inner edge does not move out or warp relative to the axis of the additional roof element.
- When everyone has checked and determined that everything is in place, we fix the outer edge of the ridge to the roof with screws. Now it's time to use the cord. We fasten its ends by any convenient method on the edge - the zero point of the metal ridge. Rising slightly above the cord, you need to examine the line of the skate.
- Focusing on this line, we align and fix inner sides corners of the ridge.
- Next, we can install the remaining strips, tracking their position relative to the cord.
- The ridge is attached to the metal tile by screwing in the screws, not rarely, but not thickly. You need to check the corners so that they do not clap. If the gaps remain large, strong wind they will make unpleasant sounds.
Calculation and accessories
It is necessary to calculate the height of the skate. This can be done when you have already decided on the roof structure, chosen the coating material, taking into account climatic conditions, and picked up the slope of the roof. This can be done mathematically, for this the width h of the run of the house is divided in half and multiplied by the relative value.
So, for example, with a building width of 6 m, the slope will be 30 degrees.
Then the height of the roof ridge will be, 6/2 * 0.59 = 1.77 m
Since we opted for metal tiles, it would be logical to purchase all roofing material and components from one manufacturer. For installation we need:
- ventilation ridge bar;
- ridge seal;
- ventilation tape;
- lightning rod holder;
- air elements;
- sealant.
Mounting features
A ridge for a metal tile can be installed only after all the pitched surfaces of the roof have been covered with roofing material. For fixing ridge elements, it is recommended to install a special beam with a cross section of at least 70 * 90 mm. Then attach 2 crate bars on both sides. It is possible to ensure a convenient location during the laying of metal tiles by fixing the brackets to the central beam and hanging special walking bridges on them. With the help of such installations it will be convenient to move around and perform the necessary assembly work roofing.
We attach a ridge beam to the central bar. To make it more convenient to do this, we recommend rounding the upper edge. Such a measure will help ensure a snug fit of the ridge elements. To prevent the appearance of mold, decay and fungi, it is worth upholstering the ridge beam along with roofing material or a special sealant. Such a measure will significantly extend the life of the entire roof.
Fastening is made directly to the ridge beam with screws. The places that you have protected with roofing material must be painted with oil paint or enamel. 2 skates laid on adjacent slopes will allow to make a coating. Then you should fix the main long skate. The remaining skates should be laid in such a way that their widened ends are located in the direction of the pediment.
For fastening on the flat side of the bar and on the longitudinal axis of the hump of the bar, 2 holes must be drilled so that the holes on the lapels pass through the crests of the waves of the metal tile. The edge of the ridge must be extended outward by at least 2 cm. When laying a flat ridge, it is imperative that all parts overlap more than 10 cm. In many cases, additional installation of a ridge board is required, which is installed above the topmost board of the crate, while leaving a gap between the slopes and ridge boards of 80 mm. Such measures will ensure ventilation under the roof of the metal tile.
In this article, we will talk in detail about additional elements that must be present on every roofing from corrugated board or metal tiles.
The main types of additional elements for the roof
- skate plank
- End plate
- endova
- junction bar
- low tide
- Snow guards
skate plank
Flat ridge - a plank designed to cover the joint of roofing sheets in the ridge part of the roof. The standard size of such a bar is considered to be 150x150mm. The edges of the plank must be rolled.
The bending angle of the bar must be calculated in advance so that the manufacturer would bend it immediately in the form in which you need.
Also, if you need some non-standard size, then the manufacturer should not have any problems with its manufacture.
A figure skate is designed to perform the same functions as a flat skate. The difference lies in the more complex figured execution.
Has a more beautiful appearance. Due to the upper curly comb, the consumption of material for the manufacture of such a bar increases, and, accordingly, the price of the product does not increase significantly.
End plate
flat end bar- it is also popularly “frontal” designed for installation on the gable part of the roof. After or corrugated board, non-closed areas remain on the sides. The function of such a bar is to protect the roofing cake from wind and precipitation.
The standard size of a flat end plate is mainly 100x150mm. If there is a need for other sizes, they will be made to order according to your drawings without any problems.
Figured end plank- unlike flat, it has a more beautiful appearance, and is a little more difficult to manufacture. Due to the greater number of angles, it is more rigid and able to withstand a greater wind load. Dimensions are adjusted as needed at the time of order.
The installation of the bar should be carried out after the work has been completed.
endova
Lower valley - such additional elements also popularly called the "bar of the internal joint." By this name it is not difficult to determine that it is used in places where an internal joint of two roof slopes is formed.
The lower valley is placed under the roofing sheets, and thus additional protection against precipitation is created at the junctions. The dimensions of the valley are on average 320x320mm, including rolling.
The upper valley is mainly a decorative additional element, and additional protection at the joints of the negative corners of the roof.
junction bar
Adjacency strip - this type of bending element for the roof, designed to protect against rainfall at the junction of sections of the roof to walls or pipes.
Often such a bar is made with the so-called "strobe". With its help, it becomes possible to delve into the wall. Thus, you will very reliably protect the junction of the roof to the wall from precipitation ingress into the under-roof space. The dimensions of such an element are quite individual, therefore, before ordering the bar, take measurements several times and carefully consider the bending configuration and the dimensions of the corners of the future junction bar.
When installing the junction bar, I strongly recommend using additional waterproofing, as well as applying sealants in places where small gaps form. This approach will give you roofing cake feel dry and comfortable 🙂
low tide
Window sills - used to protect against excess moisture between the wall and windows. Also, these additional elements made of galvanized steel are able to protect the window sill from minor mechanical damage. The slats are configured to have a slight slope on the main part of the product, which facilitates the flow of water. After installation of ebbs, window openings acquire a more pronounced and pleasant appearance.
Snow guards
Suddenly falling snow from the roof onto your head is a rather not very pleasant phenomenon :). Whatever - always save yourself from this trouble - do not forget to mount snow retainers on your roof.
Their immediate function is precisely to prevent snow from sliding down slippery surfaces. polymer coating corrugated board or metal tiles.
The configuration of snow retainers can be different, depending on the wishes of the client, but this does not change the essence.
Mount such additional elements mostly staggered. The calculation of the number of snow retainers must be carried out based on the average amount of snow falling in your area. In general, it is enough to install one row for each slope along the perimeter of the roof. In case of high snow loads or too long roof slope, additional rows are installed.
The final construction of the roof is the installation of the ridge. Mounted ridge for metal tiles will give the roof an aesthetic appearance and prevent the penetration of water under the roofing material. Its installation is carried out with additional ventilation details. A properly fixed ridge element will provide a ventilated section of the roof with a constant exchange of air, keeping the roof elements from rotting and fungus formation.
Completing the roof device, mount the ridge. This concept has two meanings, although they are sometimes combined into one:
- The ridge of the roof is formed at the top point of the junction of the slopes.
- The device of the roofing ridge is a cover for the resulting gap at the junction of the roofing material. It is customary to install the product from a material identical to roofing. The ridge element is selected to match the color of the roof, taking into account architectural style buildings.
The complete set of ridges of a metal tile includes special fastenings and sealants. The use of seals provides a tight connection that prevents water from penetrating into the under-roof space.Roofing from a metal tile has the property of condensate formation from a temperature drop. Therefore, the roofing material is laid on a 50 mm raised crate, creating a ventilated space between the bottom surface of the metal tile and the waterproofing film. On the roof, under the ridge of the metal tile, it is necessary to install a sealant. Such a device will protect against the ingress of insects and debris into the under-roof space. The function of the material is to preserve the structure of the roof, protecting the ventilated space from the influence negative factors. The high chemical resistance of the sealant prevents the material from rotting and mold formation.
The main types of ridge bars
The device of roofs of different buildings differs in its shape, so the types of skates for metal tiles can also vary:- A semicircular ridge is installed at the junction of the roof slopes, closing the ends with decorative plugs. They create a finished look.
- Installation of a straight-shaped bar is carried out in all types pitched structures without requiring the installation of decorative caps. It has a lower cost, but is inferior in beauty to a semicircular counterpart.
- The narrow bar is mainly intended for the device decorative finishes tent structures. It gives an aesthetic appearance to spiers and arbors.
- Curved ridges of T- and Y-shaped metal tiles are used for fastening straight planks on the roof at their junctions.
- End elements are used to cover the gables.
Varieties of semicircular planks
To date, on sale you can find semicircular slats custom sizes. So the manufacturer is trying to reduce the price of the additional element by saving metal. The non-standard bar is slightly narrower, so in some cases its installation is not recommended. Each type has its own advantages and disadvantages:- plank standard size creates a larger overlap on the metal tile. This means that it better protects the roof joint from the penetration of rainwater and snow. It also allows you to sometimes refuse to use a seal for the benefit of economy and good ventilation.
- When using the ridge-ridge air element, it will be completely covered by the side shelves of the standard element. The edges of the aeroelement will peek out of the narrowed bar, spoiling the appearance of the roof.
- The resulting large gaps at the joints due to mistakes made can easily be covered with a standard bar. But under it you need to lay a sealant to protect the ventilated space under the roof.
- A narrower element is more profitable to buy because of the lower cost. But it covers the gap less with side shelves. Under such a bar, in any case, you will have to push the sealant. The cost of purchasing it again increases, plus the ventilation under the roof worsens.
Calculation of the number of slats
Knowing the dimensions of the roof and the ridge of the metal tile, it is necessary to make the simplest calculations of the ridge strips installed on the roof. This can be done by the formula N=Ls.÷(Lp. - 10), where:- N is the number of slats;
- Lс. - the length of all roof slopes (mm);
- Lp. - the length of one bar (mm);
- 10 - overlap of planks at the joints (mm).
- At the very beginning, using a stretched cord, make sure that the bend of the ridge axle does not exceed 20 mm. Identified deviations are corrected.
- A sealant is attached to the grooves of the ridge elements. If you want to save money, you can lay a loose layer of glass wool.
- Two assistants on both sides of the roof raise the ridge bar. Avoiding a large vertical gap, the third assistant lays the ridges of the metal tile on the outer edge of the roof. In this case, the bar should be on the same level with the extreme sheets.
- From the opposite side of the roof, the assistant observes that there is no warping of the inner edge. The outer edge of the element is screwed to the roof with screws.
- The construction cord is pulled along the edge. Aligning along the line of the cord, the inner sides of the skates are screwed onto the roof.
- The rest of the elements are mounted strictly along the stretched cord. The skates on the metal tile are fixed with screws every second wave, periodically checking that they do not slam on the roof from the wind.
The nuances of installing ridge elements
When installing strips on the roof, you need to pay attention to different nuances:- Flat skates on a metal tile are mounted on the roof with an overlap of 30–50 mm. Semicircular elements are fixed along the profile lines.
- Gable roof device ( gable construction, resting on two walls of the same height) requires a combination of a roof slope with a ridge plank model.
- triangular and trapezoidal roofs require adjustment of the ridge bar by bending or unbending.
- For all its merits, the seal under the skates on the metal tile prevents good ventilation. Therefore, it is advisable to install it for a roof with a gentle slope. Under roofs with a slope angle of more than 45°, a sealant can be dispensed with.
- If it is impossible to refuse a sealant, it will help to provide air to a ventilated space. additional installation roof outlets for ventilation.
Here you can see the order of work:
Having finished the installation of the ridge, the aesthetics of the ridge rib are examined from below. Decorative caps are placed in the semicircular planks. It is not necessary to buy them, it is quite possible to cut them out of the remnants of metal. Most roofers do just that. The roofing work is now complete.
