The overlap of corrugated board on the roof

Corrugated metal is a popular choice for roofing materials because of its affordability and long lifespan. Making sure there is adequate overlap is a vital component of installing corrugated metal roofing. This improves the roof’s structural soundness and is essential for shielding the building from the weather.

The way that one metal roofing panel overlaps with the next is referred to as the overlap of corrugated boards. This overlap functions as a wind- and rain-resistant barrier. Under typical weather circumstances, the standard overlap is intended to stop water intrusion.

In order for corrugated metal sheets to overlap properly, each panel must be positioned such that the ridges and grooves, or corrugations, securely interlock. This alignment lessens the possibility of leaks and internal water damage by diverting water away from weak spots in the building.

Installers frequently employ particular methods to produce the desired overlap. These methods differ according to elements like the local weather and the roof’s pitch. Maintaining the integrity of the roof over time requires making sure the panels fit snugly together.

Corrugated board as a roof material

For many years, the construction industry has utilized materials such as corrugated board, profiled sheet, or metal profile. For a variety of uses, it is employed in facing work for building roofs and walls. D. The material can also be utilized for building fences and constructing the foundation’s formwork. In low-rise private construction, the professional has made a solid reputation for himself.

Corrugated board: what is it?

A comparatively thin sheet of metal, usually galvanized steel, is called corrugated board. It undergoes unique processing during manufacturing called profiling, which causes different types of gutters to form on it. They strengthen and impart a certain rigidity to metal sheets.

Speaking of which, Early in the 19th century, the profile was first developed. Henry Palmer, a British engineer, is credited with creating it.

Thanks to his qualities, corrugated board became very popular. A few of these are as follows:

• simple installation;
• the ability to compensate for some kind of uneven surfaces;
• lack of tendency to corrosion due to galvanizing;
• long service life;
• the ability to choose a material of absolutely any color;
• Lightness of sheets.

Labeling and utilizing corrugated cardboard

Corrugated board is not without its drawbacks, though. This is the drum’s effect, first and foremost. When it rains, the material rattles quite loudly, amplifying any noises. However, if you are concerned about the installation of the soundproof layer during the laying work, you can easily deal with this drawback. The material’s propensity to rust in the event that its outer protective layer is compromised is another disadvantage.

In the event that the barrier is compromised, the corrugated board may rust.

Corrugated board roofs are generally very robust, long-lasting, and attractive. They can endure precipitation for many years without complaining, are unafraid of the sun’s and moisture’s effects, and can function for many years.

The profiled sheets’ roof

GOST 24045-2010. For construction, profiles steel bent leaf sheet with trapezoidal corrugation. Details. Downloadable file (open the PDF file in a new window by clicking the link).

Prices for corrugated board

Corrugated board

"The way corrugated metal roofing sheets overlap is essential to its weatherproofing and durability. Knowing how to overlap a roof correctly guarantees a tight seal against wind and rain, preventing leaks and extending the life of the roof. This article examines the significance of appropriate overlap, various techniques for achieving it, and useful installation advice. By becoming skilled at these methods, builders and homeowners can extend the life and functionality of corrugated metal roofs, guaranteeing their stability and resistance to weathering over time."

Types and classification of corrugated board

In the construction industry, corrugated board comes in a variety of forms that vary in terms of gutter shape, rib height, production material, quality, and attributes. The following types are differentiated based on the type of metal used to make the profile:

• a sheet of steel that does not have a protective coating;
• a leaf made of copper, aluminum or steel chromnickel;
• a sheet undergoing hot galvanizing;
• a sheet is hot -valked with an additional protective coating;
• Special sheets that have a certain purpose – perforated, with embossing, bent, etc. D.

The structure of corrugated (profiled sheet) roofing

Speaking of which, Steel profiled sheets are the most prone to corrosion of all the types. Copper, aluminum, and chrome are the most costly.

Additionally, all varieties of profiled sheets fall into a few categories:

• depending on the width of the profile;
• in the shape of the corrugation and its height;
• depending on the thickness of the sheets;
• In the width of the material.

Minimal value coatings are only appropriate for walls. It is preferable to use corrugated board with the maximum thickness for the roof.

Speaking of which, The corrugation height of sheets used for wall design ranges from 8 to 21 mm, while sheets with a height of up to 44 mm are used for roof flooring. However, the material has more than 57 centimeters of corrugation, which makes the formwork non-removable.

A different coating that serves protective purposes can be applied to the material. Polymer materials and paint compositions are examples. Acrylic, polyurethane, polyester, and t. D. are examples of polymer protective coatings.

Polymer-coated corrugated board: available colors

Table. Corrugated board brand.

Choosing material for roofing

The local climate should be taken into account when selecting a roofing material. They recommend using corrugated board with a corrugation height of at least 20 mm in areas where there is a lot of winter precipitation and a roof slope angle of at least 15 degrees. The ideal choice if the indication fluctuates between 20 and 60 mm. Additionally, a unique moisture output groove ought to exist.

Speaking of which, Private homes are typically constructed using corrugated board bearing the NS44 and NS35 brands.

When choosing the length of the sheets, consideration should be given to those that will allow you to block a portion of the roof from the cornice to the skate, and that will leave you with a small amount of extra length (roughly 50 mm) to decorate the overhang of the roof. Since there won’t be as many joints on the roof in this scenario, it will be more reliable and tight.

Long-term profile writers

The corrugated board roof fasteners are installed on a unique wooden bar crate. To ensure a lengthy service life, antiseptic compounds must be applied to all wooden structural details. A metal profile is a less common method of creating a crate; in this instance, drilling individual holes for self-tapping screws during the security forces’ attachment to the crate is not necessary because the thickness of the walls on the cut cannot be greater than 2 mm. By the way, her next move will depend on how much weight the purchased corrugated board can support.

Conversation plan for a profiled sheet

The corrugated board frame

Craftsmith metal profile

Table: The relationship between the crate’s step and the featured brand.

Mark	Material thickness, mm	Roofing angle, degrees	The size of the overlap of the material, the number of waves	The step of the crate
NS8	0.55	From 15	2	Continuous
NS10	0.55	Up to 15	2	Continuous
NS10	0.55	From 15	1	30 cm
NS20	0.55-0.7	Up to 15	1	Continuous
NS20	0.55-0.7	From 15	1	50 cm
NS35	0.55-0.7	Up to 15	1	50 cm
NS35	0.55-0.7	From 15	1	100 cm
C21	0.55-0.7	Up to 15	1	30 cm
C21	0.55-0.7	From 15	1	65 cm
C44	0.55-0.7	Up to 15	1	50 cm
C44	0.55-0.7	From 15	1	100 cm
H60	0.7; 0.8; 0.9	From 8	1	300 cm
H75	0.7; 0.8; 0.9	From 8	1	400 cm

Generally speaking, there should be less space between the different components of the crate the steeper the roof’s inclination.

Prices for a metal -profile pipe

Metalloprofile pipe

Features of the installation of sheets on the roof

One material that doesn’t "breathe" is corrugated board. It won’t be used for the condensate evaporation or air exchange processes. The latter will inevitably gather beneath the roof and have an adverse effect on the other building materials. As a result, installing the waterproofing/thermal insulation layer and making ventilation ducts must be done carefully when arranging the roof.

Made of corrugated board, roof pie

Moisture that would otherwise try to enter the house during rain or snowfall is perfectly removed by the corrugated board itself. However, the material used in fasteners loses tensile strength where screws are inserted, and it is impossible to function without a waterproofing layer. Any material of this kind can be used to lay waterproofing; it should be applied to the crate starting at the bottom and working its way up until corrugated board with cuts at least 10-15 cm is installed. All waterproofing layer joints need to be glued and firmly stacked at the same time.

Dropper: the first piece of a corrugated board roof

Dropper installation on a private home’s roof

Ventilation ducts are installed so that condensation under the roof can evaporate. These are typical spaces that exist between the waterproofing layer and the crate. Ensuring that they are not overlooked is crucial.

If the length and size of the roof permit, corrugated board is fastened to the crate to fully close off the area of the roof between the skate and the cornice. You will need to place different material details on top of each other if the roof area is so big that the required size of a profiled sheet isn’t even available for purchase. Installation in this instance must always be done from the bottom up, that is, starting at the cornice and working its way toward the skate.

Corrugated pipe installation

The corrugated board sheets are fastened to the crate using unique self-tapping roofing screws (4.8 x 0.38 mm), and they can be joined together by unique roof rivets. In any case, nails cannot be used. Moreover, the screws need to be inserted straight and evenly.

Counseling! You can use self-tapping screws that will approach the color directly to the metal profile so that they are not visible on the completed roof.

Self-cut corrugated board structure

Screws that self-tap for corrugated board

Self-tapping screws must only be inserted in locations where the coatings’ waves fit snugly against the crate. For every 1 m 2 of corrugated board, 6–8 fasteners are typically used. The sheet fasteners run the full length of the corrugation on the crate’s extreme bars, but they pass through just one corrugation on the remaining portion of the sheet. Self-tapping screw spacing shouldn’t be more than 50 cm apart. 30–40 cm is the ideal range.

Prices for various types of construction boards

Construction boards

How to calculate the overlap

There are two ways to lay metal profile sheets on a roof: vertically and in blocks. If the material sheets have drainage grooves, the first option is chosen. The first sheet is attached to the first row, followed by the first sheet of the second, and finally the second sheet of the first row, which is attached to the second element of the first. After completing this portion of the work, the sheets are aligned but not completely fixed; only then do they firmly rest on screws.

Three sheets of corrugated board can be blocked and fixed. In the event that there are no drainage grooves, the method works well. First, two of the first row’s leaves are arranged in a row, and then a sheet from the second row is fastened to them.

How to lay sheets

It’s crucial to keep in mind that corrugated board sheets are always placed only overlapping on roofs. By taking this precaution, the house’s roof will be better shielded from the elements and won’t leak. Furthermore, the roof’s angle of inclination directly affects how big the overlap is. As an illustration:

• angle of less than 15 degrees – overlap 20 cm (two waves);
• angle of 15-30 degrees-overlap 15-20 cm;
• angle of more than 30 degrees-overlap 10-15 cm.

D. If the overlap is horizontal, it must always be further bonded with sealant, mastic, etc., and cannot be less than 20 cm.

The relationship between the steepness of the roof slope and the size of the corrugated board sheets and crate step

This information will be useful in determining how much material is needed to decorate a specific roof. Just be aware of its total area and inclination angle.

Endova, end, skate strips

After installing the cornice or cornice bar, profiled sheet installation on the roof commences. Self-tapping screws are used to secure it in the proper location (along the bottom of the roof; step: approximately 30 cm). Its placement beneath the waterproofing layer is crucial because moisture collected beneath the roof will fall on the cornice bar and pull the water brothers down to the ground.

Adjusting the bar mounting plan

In the event that the roof has internal corners, installation of the so-called valley lining will be necessary. Underneath the crate bars, there ought to be a dense flooring made of boards. On either side of the central axis, its width cannot be less than 60 cm. The corrugated board should be at least 25 centimeters below the bottom of the Endova bar. Additionally, a layer of insulation is added to this location.

The end bar is installed once all of the corrugated board sheets have been laid. It is set up on sheets with a single wave of overlap. Screws are fastened in steps of roughly 30 cm. The final skating strips are then installed. They also fit together over a distance of at least 10 cm. The fastener step is 30 cm. The skate bar and the corrugated board are separated by another layer of insulating material.

Attachment of the ridge component

Basics

When working with corrugated board on the roof, it’s crucial to follow certain guidelines and precautions:

• the material must be transported carefully so as not to mole and not be damaged;
• In order not to scratch the sheets, you need to move around in soft shoes, it is better – on rubber sole;
• You can step on a metal profile only on the inside of the gutter, pinned to the crate;
• If the corrugated board had to be cut, these places must be treated with enamel to avoid the beginning and spread of corrosion processes;
• Work with corrugated board is carried out in gloves:
• You can wash the roof of such a material only with a soft brush so as not to scratch the protective layer;
• If the material is closed by a transport film, then it is removed immediately after fixing the sheet on the roof, otherwise then this cannot be done.

Negotiated a roof using your own hands.

Which tool is required

Several tools are needed to construct a corrugated board roof:

• hammer;
• drill;
• screwdriver;
• scissors for metal;
• Kusachki;
• a sealant pistol and the sealant itself;
• ladder;
• Steppler construction;
• Roulette and pencil.

How to use corrugated board to cover the roof

It is essential to know how to overlap corrugated board on your roof correctly if you want to guarantee its weather resistance and longevity. You can prolong the life of your roof and avoid leaks by using the proper installation methods.

Start by giving the roof surface a thorough cleaning. Make sure it is dust-free, dry, and clean. This helps create a tight seal between the corrugated sheets and lays the groundwork for a seamless installation process.

It’s important to adhere to the manufacturer’s recommendations regarding the recommended overlap dimensions when overlapping corrugated sheets. Generally, overlaps should be big enough to keep out water seepage while still allowing the materials to naturally expand and contract in response to temperature changes.

It is crucial to properly secure the overlaps. Make use of corrosion-resistant screws or nails, or other suitable fasteners. As you arrange them along the corrugated sheets in the appropriate spots, make sure that every overlap is tightly fastened to avoid uplift in the event of high winds or other weather.

Finally, once the installation is complete, check the overlaps and the whole surface of the roof for any openings, loose fasteners, or places that might require more sealing. The longevity and weatherproofing of your corrugated roof can be sustained through timely repairs and routine maintenance.

Video on the topic

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