Decking is a material that allows you to create an attractive and reliable construction of a roof, fence, facade cladding, etc. in a fairly short time. This article will talk about how to properly fasten corrugated board, how to calculate fasteners and what nuances must be taken into account.
Talking about how to properly fix the corrugated board, it should be said right away that the installation of this material is quite simple and requires a minimum set of tools and fixtures.
In addition, this material is quite economical, allowing you to cover even fairly significant areas with minimal financial costs.
It is necessary to choose how and with what to fix the corrugated board, depending on what specific type of work will be performed:
- Roofing;
- Finishing a fence or other fence;
- Cladding of walls and facades, etc.
Of all the material options, it withstands the greatest loads roofing sheeting, manufactured using a reinforced formula and providing reliable protection of the under-roof space and the interior of the building.
This is one of the reasons for the growing popularity of profiled steel as a coating material.
Other factors due to which corrugated board is becoming more widespread include:
- Ease of work;
- Ease of handling the material;
- Lightness of the material;
- High strength.
It is the lightness of the material that allows, before attaching the corrugated board to the roof, not to reinforce the supporting structure, which further reduces the time spent on erecting the roof.
Considering how the corrugated board is attached, even roofs with a slight slope can be covered with it, which is also its advantage over many other materials.
In addition, corrugated board, produced using modern technologies, has additional protection against corrosion, which significantly increases its service life.
Even a person who has not previously performed construction work can figure out how to properly fix the corrugated board, since this uncomplicated material is cut quite easily and screwed with bolts or self-tapping screws.
Its installation can be performed even in severe frosts, which is another indisputable advantage.
We can talk about various advantages for a long time, but let's consider how corrugated board is installed - how to fix this material to the roof.
Fastening methods
Fastening wall corrugated board, as well as roofing, etc. is carried out using conventional or drilled self-tapping screws.
The most aesthetic appearance of the fastening is achieved by using self-tapping screws, the heads of which are coated with a polymer coating, which allows the fastening site to merge with the general background.
The rubber gasket under the head of the screw prevents the penetration of moisture under the sheets of corrugated board at the attachment points. Self-tapping screws should be screwed strictly perpendicular to the surface, avoiding distortions.
It is most correct to screw self-tapping screws for fastening corrugated board into waves adjacent to the run or crate closely.
Sheets can be fastened to wooden logs with ordinary self-tapping screws, and when fastening to metal logs, self-tapping screws equipped with a drill should be used.
Useful: when choosing a method for attaching corrugated board to a wall, fence or roof, you can also opt for rivets.
Transverse logs are most often a square profile pipe, to which the corrugated board is later attached.
Their fastening to the posts during the construction of the fence is carried out using clamps or electric welding. The use of transverse wooden logs in the construction of temporary corrugated fences makes it easier to install and reduce the cost of the structure.
In the event that it is necessary to fasten the corrugated board in a short time, welding can also be used to fasten the sheets directly.
At the same time, it is very important to monitor the violation of the protective coating of the material under the influence of high temperatures and to perform additional anti-corrosion treatment of the coating after completion of welding work.
Calculation of the amount of corrugated board for fasteners
The number of sheets of corrugated board to cover the roof or fence is calculated in different ways:
- In order to calculate the number of sheets of corrugated board required to cover the roof, the area to be covered should be divided by the area of one sheet of material, taking into account the overlap. The result is rounded up to the nearest integer. For example, if the calculation resulted in a value of 4.32, then 5 sheets are entered in the estimate.
- The calculation of the number of sheets required for the construction of the fence is determined by dividing the perimeter of the designed fence by the width of one sheet of material. If the fence is made end-to-end, the mounting width of the sheet is taken into account, taking into account the size of the overlap. The profiled sheet consumption when performing the calculation by the two listed methods differs by an average of 10%.
For both roofing and wall materials, the estimated number of hardware used for fastening per square meter is 8 pieces.
At the same time, one should not forget that in the immediate vicinity of the ends of the sheets (near the slopes and skates) it is desirable to double in order to ensure reliable stability to wind loads.
In this case, the fastening step of the corrugated board should be at least 50 cm.
Useful: the amount of fasteners required for the construction of the fence depends on its height and is usually selected empirically.
Roof deck fastening
The scheme of fixing the corrugated board on the roof includes the following steps:
- Laying out the sheets of material in the required order and location, while it should be borne in mind that the amount of overlap of the sheets depends on the angle of the roof (the greater the slope, the less the overlap). The largest overlap, which is about 20 cm, is selected with a roof slope not exceeding 15 °. If the slope is over 30°, the overlap is reduced to 10-15 cm.
Important: with critically small roof slopes (10 ° or less), additional sealing of all sheet overlaps should be performed.
- Installation of the crate, the size of which is also selected depending on the angle of the roof slope, as well as on the height of the corrugation of the corrugated sheet (the greater the angle of inclination or the height of the corrugation, the greater the step of the crate should be chosen).
Useful: it should also be noted that how many waves the overlap includes depends on the height of the corrugation and the slope of the roof. With a small wave height and a small angle of inclination of the roof, the overlap should include at least two waves.
- After the marking of the sheets is completed and the crate is laid, they begin to fasten the sheets of corrugated board. To fasten the sheets to the crate, special roofing screws are used, which were described above.The insulation under the cap and the special coating available on it allow you to protect the attachment points from corrosion, moisture and exposure to sunlight, increasing the life of the entire roof structure.
- Sheets of corrugated board, completely covering the length of the roof slope, are simply fastened with self-tapping screws parallel to its eaves.
- If the length of the sheets of material is less than the length of the slopes, then they are laid in several rows, starting from the bottom and gradually moving up. In this case, each subsequent row is laid on the previous one with an overlap of about 20 centimeters.
Important: when ordering corrugated sheets for the roof, it is important to remember the length margin (about 4 centimeters), since the covering sheets should hang slightly from the end of the roof.
There are basic rules for fastening corrugated board, which should be followed when covering the roof:
- screwing of self-tapping screws is carried out only on the cavities of the sheets;
- screws intended for the ridge and for the roof itself differ in length (the screws for the ridge are longer);
- when manually tightening self-tapping screws, the applied force should be carefully calculated, since overtightening the screws can lead to damage to the insulation layer, and insufficiently tight tightening can lead to insufficiently effective roof performance of its protective functions.
Fastening corrugated board during the construction of fences
Consider the main stages of fastening corrugated board during the construction of the fence:
- Along the entire perimeter of the fence under construction, guide holes are drilled, the depth of which is from one to one and a half meters.Then, pillars for supports are driven into the drilled holes, on which transverse logs are fastened in two or three rows. This ensures sufficient reliability of the structure on which the corrugated board will be attached, and its resistance to various external loads.
- Before fastening the sheets, the areas to be covered should be measured. Such measurements will not be superfluous even taking into account the drawings drawn up before the work. The length of one sheet of corrugated board by default is taken equal to the length of one slope, that is, the height of the wall. You should additionally check the dimensions of the diagonals, as well as measure the linear length of the area on which the coating is carried out.
- The fastening of the corrugated board is carried out either on a special crate or on a run - a metal bearing element, so the runs or crate should be prepared before proceeding with the fastening of the corrugated board.
- Fastening is carried out starting from the end, and each subsequent sheet must cover one wave of the previous sheet. Unlike roofing corrugated board, which is always installed with an overlap, wall corrugated board allows, in rare cases, rather unreliable butt joint installation. The place of overlap or joint must be treated with a moisture-resistant sealant in both cases. This will ensure guaranteed waterproofing of the seams.
- To trim the protruding edges of the sheets, use tools such as a jigsaw or metal shears, and in no case use abrasive tools such as grinders. Hot particles flying off during abrasive cutting lead to damage to the polymer coating, which must be especially careful.Any slightest damage to the coating during installation should be painted over to prevent corrosion.
- The finished look of the corrugated structure is given by closing the ends and corner joints with special planks, ridges or flashings. These elements are selected so that their color matches the color of the structure itself, and for their fastening, self-tapping screws or rivets are used, located at a distance of about 30 cm from each other.
Important: the flashings are fixed with an overlap of about 10 cm on silicone sealant.
In conclusion, let's say that a properly mounted and fixed corrugated board is able to please reliability, comfort and aesthetic appearance for a very long time.
To maintain an attractive and neat appearance of corrugated board, it is advisable to periodically wash the material from accumulating dust and dirt.
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