The laying of corrugated board on the roof: order and main schemes

Corrugated metal sheets are becoming more and more popular as roofing materials because of their affordability and longevity. Because they are weatherproof, they are frequently utilized in both residential and commercial buildings. A methodical approach is required when installing corrugated metal roofing to guarantee longevity and structural integrity.

Before installing corrugated metal sheets on a roof, careful planning and preparation are usually necessary. This entails evaluating the roof’s structural integrity to make sure the metal sheets won’t collapse under their weight and fixing any current problems like leaks or damage. The best installation technique and the amount of materials required can be determined with the aid of careful planning.

There are various popular methods for installing corrugated metal roofing, and each works well for a particular type of roof and its intended use. Installing the sheets parallel to the roof’s slope is known as the "parallel scheme," which is among the simplest techniques. This technique is effective and yields a tidy, consistent appearance. To improve stability and drainage, another strategy is the staggered pattern, which alternates the alignment of the sheets.

For the roof to be waterproof and to stop water leaks, corrugated metal sheets must be properly aligned and overlapped. To ensure that there is a tight seal against moisture, each sheet should overlap its neighbor. In order to minimize the risk of uplift during strong winds, it is recommended that the sheets be properly fastened, usually with screws, along the ridges.

Lastly, it’s critical to pay attention to finishing details once the corrugated metal sheets have been firmly installed. To preserve the integrity of the roof, this also entails using the proper sealants to close off any gaps or penetrations. Corrugated metal roofing can last longer with regular inspections and maintenance, guaranteeing that it will continue to offer dependable protection for many years to come.

The technology of laying corrugated facilities on the roof

When the material rises, the profiled sheet laying process on the roof commences. If the rafter system’s bearing capacity permits, slings that are fastened to the corrugated board with wooden bars and clamps or a party on the pallet with a tap are used to raise the board to the roof or one sheet.

The following are the fundamental guidelines for installing corrugated board on a roof:

1. You can move along the profiled sheet only in shoes with a soft sole without metal elements, otherwise you can damage the protective coating.
2. When installing you can not put tools and fasteners on the corrugated board itself.
3. Boards 100 × 25 mm or 150 × 25 mm, as well as bars 50 × 50 mm are suitable as a crate. You can use larger lumber.
4. Before laying the corrugated board on the roof, the drumber hooks are first attached, then – the cornice bar.
5. It is advisable to start the installation of sheets from the side, the opposite to the predominant direction of the wind, if any. If it is not, the laying of the corrugated board is carried out from a comfortable end or a crest.
6. All scratches on the profiled sheet are necessarily covered with special paint to protect the material from focal corrosion. In this case, when painting, it is necessary to carefully cover the damage, otherwise, over time, spots may appear on the roof from corrugated board.

If the corrugated board sheets’ length is sufficient to cover the slope without the need for transverse joints, that is the ideal situation. There will only be longitudinal overflows in this situation.

Design of longitudinal joints

Longitudinal joints perform one wave in accordance with the guidelines for installing metal profiles on the roof. Very mild, nearly flat roofs with a slope of less than 12 ° are the exception. Two waves may overlap in this instance.

In addition, the capillary groove on the profiled sheet should always be on the covered side if one exists. It prevents moisture from being drawn through the joint by interfering with the capillary effect; therefore, if it is on top, it serves no purpose.

The longitudinal joint connects two sheets by means of short metal screws (5.5 × 19 mm) that are tightly twisted perpendicular to the sheet. They must screw them into the peak of the wave simultaneously. Step of fastening: 500 mm maximum, preferably less.

It is preferable to fasten the longitudinal joints until the profiled sheet is finally attached to the crate in order to improve the aesthetics of the corrugated board roof.

Transverse overflows

Because there is a high risk of leakage on transverse overlays, the main roofing standard SP 17.13330.2017 "Roof" forbids laying a profile on roofs with a slope of less than 12 °. As a result, it’s crucial to either eliminate gentle roofs entirely or reduce their quantity.

Unfortunately, this is challenging because a private home’s ramp is longer than 6 to 8 meters; to work with such long sheets, you need specialized equipment. Thus, you probably do not exit from the transverse overflows if you are a private residence rather than a bathhouse. However, if everything is carried out properly, they shouldn’t cause any issues:

1. The overlap should be 250 mm, for very steep slopes (more than 45 °), 200 mm is permissible.
2. The joint should be exactly on the crate. If the step does not allow this, you need to fill the additional board or bar.
3. Sheets should be laid down from the bottom up with peculiar columns. This is necessary so that the profile forms a continuous channel for moisture. At the same time, it is convenient to use the zigzag -shaped laying scheme for the roof of the roof: first the first sheet of the first row is attached, then the first sheet of the second row, then the second sheet of the first row, etc. D.
4. Sheets at the site of the overlap are fastened with 4.8 × 29 mm wood or 4.8 × 35 mm through a wave through a wave or into each wave in the center of the joint (depending on the recommendations of the manufacturer). Screw them strictly perpendicular to the corrugated board.

This guideline applies to roofs that have a slope of 12 degrees or greater. You can cover with a metal profile and a softer roof if you do not have to adhere to the standard; however, the guidelines for installing profiled sheets for this purpose differ slightly:

• The overlap should be 250-300 mm;
• Joints are necessarily sealed with a sealant or butyl tape;
• It is preferable to use a special roofing profile.

It is not necessary to create sheets in separate rows of the same length when designing a profiled sheet layout for the roof. Furthermore, if the transverse joint can be moved closer to the skate, this is very undesirable. The likelihood of leaks decreases with increasing transverse overlap with the skating run.

Put another way, you need to use sheets that are 6-8 m and 2-4 m long instead of two sheets that are 5 m long when the slope length is 10 m.

How to fix a profile at the roof when laying

You must use roofing screws and a unique sealing elastic band made of EPDM tacu to secure the profiled sheet. It will guarantee sealing the corrugated board fastening location and shield the hole from moisture infiltration.

Corrugated board is attached through the wave when it is laid on a roof that slopes 12 degrees or more. It is occasionally advised to attach the profile to each wave, particularly when the slope is tilted at a smaller angle; in this instance, make sure to refer to the manufacturer’s instructions.

In any event, if it is feasible, the screws are inserted into the bottom of the wave in the middle of the crate, perpendicular to the sheet. When positioned in a checkerboard pattern through a wave.

"All about the Roof" delves into the fundamental procedures and design themes associated with installing corrugated roofing sheets. We break down the essential elements of corrugated board roofing, from selecting the appropriate materials to comprehending the detailed installation procedure. Whether you’re a do-it-yourself enthusiast or hiring an expert, this guide offers concise, useful advice to make sure your roof looks fantastic and weatherproofs well. Learn the sequence and key concepts of a well-installed corrugated board system to help you make wise choices for your roofing project."

The laying of the corrugated line on the roof with rectangular slopes

Simple profiled sheet layouts are found on single-sided or gable roofs:

1. Lay the first sheet near one of the ends. It is always placed by the covering side to the end.
2. Comers the sheet on the cornice overhang.
3. If the corrugated board was flat on a pedimental overhang – perfectly, proceed to the mount. If not, the sheet needs to be trimmed with scissors for metal.
4. The remaining sheets are laid with a zigzag, aligning them along the lace, which is stretched over the cornice.
5. When the plane of the slope is sewn, skating strips are attached on the skate, and on the pediments – end.

The only major issue that can arise when laying a profiled sheet on a rectangular slope is alignment, provided that the slopes’ geometry is off. The primary error in this instance is attempting to level the sheet by both the pediment and the cornice.

The reasoning is straightforward: although the cornice may have a small irregularity, the sheet won’t need to be cut. Easy to understand but incorrect because there won’t be a flat line of cornice overhang if there is even a tiny skew in the first leaf on the cornice. Furthermore, after installation, he does not shut the bar like the finish does.

The procedure for laying corrugated facilities on the roof with trapezoid and triangular slopes

If the manufacturer did not cut the sheets for the trapezoidal and triangle slopes, this must be done first. Next, you must locate each ridge’s axis and pull the lace precisely along it.

This is a plan for adding more corrugated board to the roof:

1. The profile begin to lay from the ridge.
2. 2. The first sheet is aligned along the cornice overhang and fixed so that the distance along the ridge between the corrugated board on the neighboring slopes is about 60-80 mm.
3. Then they lay the second sheet in a row with an overlap and continue so until the full length of the sheet is reached from a longer side.
4. After that, they begin to lay sheets of the second row according to a zigzag -shaped scheme, if necessary, moving to the third row according to the same principle.
5. At the end of the laying of corrugated board on the roof on the ridges, skate strips are installed so that their fold is over the lace.

In the event that an Endov is installed on the roof, the installation begins simultaneously in two directions from the land, not the crest. In addition, it’s crucial that there be a 60–100 mm space between the edges of the sheets from opposing stingrays. The profiledist can only be fixed 250 mm in front of the Endov axis.

To guarantee a strong and long-lasting roof, installing corrugated metal roofing requires following a few crucial steps. First things first, preparation is essential. This entails taking precise measurements of the roof and figuring out how much material is required. A proper installation is predicated on clearing any debris from the roof’s surface and making sure it is smooth.

Once ready, the corrugated sheets are laid out in a precise pattern. To stop leaks, begin at one corner of the roof and work your way across, overlapping the sheets. For the purpose of preserving structural integrity, firmly fasten each sheet with the proper screws, making sure they are lined up straight.

The pitch of the roof must be taken into account. The installation technique may differ slightly depending on how steep or shallow it is. Securing the sheets against wind uplift requires extra care on steep roofs, and proper drainage becomes crucial on shallow pitches.

Finally, routine upkeep lengthens the lifespan of your corrugated metal roof. Important chores include cleaning out gutters of debris, looking for loose screws, and inspecting for rust or corrosion. A corrugated metal roof can offer your home decades of dependable protection with the right installation and upkeep.

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