Roof crate under corrugated board

For a strong and long-lasting roof when installing corrugated metal roofing, it is crucial to comprehend the roof crate underneath it. The roof crate, sometimes referred to as the roof decking or sheathing, provides a sturdy base upon which the corrugated boards are to be installed. It is essential because it provides a stable foundation for installation and bears the weight of the roofing materials.

Although the materials for the roof crate are not limited, plywood and oriented strand board are frequently utilized (OSB). These materials were picked because of their robustness and resistance to the weather. In order to create a level and even surface on which to attach the corrugated metal sheets, the crate is placed over the roof structure’s rafters or trusses.

Installing the roof crate correctly is essential to avoiding problems like sagging or gradual deterioration of the roofing components. In order to ensure stability and structural integrity, it must be firmly fastened to the roof framing. Furthermore, the crate boards’ orientation and spacing are essential to the roof’s overall functionality because they permit appropriate ventilation and drainage.

What is corrugated board?

This corrugated material is composed of thin steel sheets that have been galvanized or chromed to prevent rust from showing on them. The density and rigidity of the material are directly influenced by the thickness of the workpiece and the corrugation parameters. There are certain benefits and drawbacks to the material.

Benefits of using corrugated board for roofing:

• lightness, due to which the rafter system of the roof and the foundation of the building as a whole will experience a minimum of load;
• ease of installation;
• cheapness;
• the ability to use on roofs with a small slope;
• durability and the ability to resist the influence of some negative environmental factors;
• Safety in terms of ecology.

Corrugated board roof

What distinguishes corrugated board from a professionalist?

Speaking of which, D. You can build awnings, boxes, garages, cottages, and other structures out of corrugated board. Furthermore, the roof has the option of being single-shoe or gable, with side inclinations up to 60 degrees.

However, the information is not without flaws:

• the need to arrange a crate of the roof for attaching corrugated board;
• The material is noisy during the rain, which means that the arrangement of sound insulation is required. Otherwise, it will not be possible to live even on the attic floor equipped according to all the rules;
• material with a disturbed protective layer will quickly rush.

The roof’s C44 corrugated board

NS35 corrugated board for the roofing

Features and layout of the roof’s corrugated board (NS44)

Features and layout of the roof’s corrugated board H57

Using unique self-tapping screws with rubber seals, fasten the corrugated sheets to the crate. These factors mean that you don’t have to worry about the material starting to rust.

Self-resistant self-tapping screws are required for fastening sheets.

Prices for corrugated board

Corrugated board

Functions and types of crate

The crate, which was previously discussed, consists of wooden rails that are roughly 30 by 100 mm in size. They are positioned perpendicular to the rafters and fastened to them with self-tapping screws or nails. Although it is very uncommon for private construction, the crate can also be made of metal.

The corrugated board crate’s components are as follows: * rafters; (2) counterattack; (3) waterproofing film; (4) vertical crate; (5) initial horizontal part-time; (6) horizontal crate; (16) vapor barrier; and (23) tape.

The primary purpose is to guarantee the stability and robustness of the roof structure as well as the ability to fasten roofing materials. If the crate is not made, the roof will not be strong enough as a whole, and depending on the type of coating used, the roofing will either become detached over time or cannot be mounted at all.

To guarantee the dependability and strength of the roof structure, the crate is required.

This very crate is attached to corrugated board, if we consider it to be roofing material. The design can also be used for other communications; insulation can be installed underneath it, and the ventilation gap’s required width can be mounted.

Speaking of which, There will be empty space in between the collapsible boards whether the crate is constructed continuously or in steps. When bitumen tiles or another soft material are used to cover the roof, a continuous crate is typically utilized. Additionally, this option has similar designs and is equipped next to the chimney.

Diagram of the roof

Table: Crate Types.

Dense and sturdy crate

After installing vapor barrier and waterproofing materials to keep the roof dry and absorb excess moisture from the insulation’s surface, the crate is put in place.

If rails or boards are placed atop the first crate once more, this section of the roof—known as the counterparty—may have two layers. In this scenario, the upper crate is either continuous or follows the standard step, while the lower crate is typically made empty. The counterparty’s details are positioned perpendicular to the components of a crate that has already been completed. If a thick layer of insulation material needs to be added, a two-layer crate can be used.

The most common type of corrugated board chats utilized in individual construction are single-layer sparse structures.

The roof crate, which serves as the underlying framework supporting and fastening the corrugated sheets, is essential to the construction of corrugated board roofs. The main components of building and putting in the roof crate are discussed in this article, along with the materials to be used, spacing guidelines, and techniques to guarantee weather resistance and durability. Homeowners and builders can make sure their roofs stay strong and adequately shield the structure below by realizing the value of a well-made roof crate." This thesis statement provides a clear and succinct summary of the article’s main points and establishes the framework for a discussion of the topic’s most important elements.

How to choose a step?

The following factors affect how wide the spaces are between the crate’s components:

• type of roofing material;
• The thickness of the profiled sheet;
• the shape of the roof and the angle of its inclination;
• climatic conditions;
• Rose of Wind;
• Other characteristics of the building.

Deciding on a crate step

The most important thing is to look at the thickness of the corrugated board used, as well as at the angle of inclination of the roof. According to SNiP, If the slope angle does not exceed 15 degrees, then it is better to “sew up” the roof with a continuous crate. In this case, exceptions can be allowed only for metal structures that differ in greater strength than wooden. And then – even in this case, the step cannot exceed 40 cm. If the slope of the slope is 15-20 degrees, then the crate is often made of wooden elements and has a step about 30-65 cm. With a slope of more than 20 degrees, a step can be even 1 m, But this option is suitable only if the corrugated board itself is characterized by high strength and excellent quality. You can navigate when choosing an option according to the table given in the figure below.

Suggestions regarding the application of corrugated board

Speaking of which, Generally speaking, corrugated board manufacturers provide comprehensive product information, including recommended laying requirements, so you can read up on each type of material directly when purchasing.

Requirements for the material

The crate is typically constructed out of wood in private construction. Choose from spruce, oak, or alder; what matters most is that the material is sturdy. The tree needs to be dried in order to be as straight, smooth, and free of cracks as possible. It is coated with anti-enactics compositions and anti-decay medications prior to installation.

A crate is typically constructed of wood.

You must measure the width and length of the roof’s slope as well as the step itself in order to calculate the necessary quantity of wood. Additionally, the simplest mathematical computations are employed. It is crucial to keep in mind that the step starts from the boards, which are required to be nailed along the cornice and skate. Additionally, the crate needs to be strengthened where pipes, ventilation windows, and other components are located.

Speaking of which, It is important to consider that some of the material may be discarded as trimmings when determining the quantity of wood. Thus, the computed amount needs to be increased by 8–15% of the reserve.

Specifications for the corrugated board crate

It is preferable to purchase corrugated board with a thickness of roughly 0.6–0.7 mm and a corrugation height of 35 mm. With a good ratio of "price-quality-strength-firmness," this is the best choice. Although it will cost more than a profaneist made of thinner steel, it will be able to support the typical loads that reach the roof without any issues. The crate must be constructed with a minimum step or continuous when using corrugated board with a lower profile height; otherwise, the material will not last long and will deform.

Prices for construction boards

Construction boards

Calculator. Materials for the crate

Installation of the crate

Step 1. First of all, it is necessary to make all preliminary calculations and purchase the necessary material. Calculations are required to make as accurate as possible to avoid buying an excessive amount of material. But you should not buy less – you need to take it with a margin. The length and width of the slope are measured, after which each of the values ​​must be divided into the chosen step of the crate. To this quantity also needs to be added to the material that will be used to create a mandatory continuous crate in the area of ​​chimneys and other similar elements. All the material should be treated with an antiseptic and moisture -repellent substances before use – this will protect the tree from rotting, lushing with mold and a number of parasites.

Step 2: Gathering each of the roof frame’s principal components is necessary. In other words, since the crate and other components are mounted directly on the rafters, the horse and rafters should already be in place.

The frame elements are then gathered.

Step 3: Next, apply the waterproofing substance. This material is fixed with the use of a bracket and construction stapler.

Step 4: After that, you also need to attach the 50×50 mm tiny bars that are nailed to the rafters. By the way, the same ventilation gap required for the profiled sheet will be provided at the cost of these bars.

Step 5: To close the skate and shield it from water, place an extra waterproofing material strip inside of it.

Waterproofing the section of the ridge

Step 6: The hooks for installing a drainage gutter must be fastened along the cornice.

Installing hooks to hang a rain gutter

Step 7: After that, you can begin installing the actual crate (counterparts). Self-tapping screws are used to fasten the boards to bars that have already been nailed. Installing the components closest to the cornice comes first, followed by the remaining parts of the crate after a specific step.

Step 8: To make things easier, you can mark the bars with the step of the crate. Alternatively, use the twine.

Step 9: Nails or self-tapping screws must be used three times as much as the thickness of the board to be fastened to the crate. If not, the wind load will be too great for the design to support. If the crate needs to be placed all the way along, the joints should be found on the support, which is the bar that was previously fixed on the rafters and to which the crate is directly attached. Combining two adjacent rows in parallel is not advised; instead, the joints should be arranged, for example, in a checkerboard pattern. Thus, the roof’s dependability will increase.

With every row, the joints between the bars should move.

Step 10: You also need to fix the crate’s bars along the skate.

Hanging bars run the length of the skate.

Take note! To make a crate, the board that is fastened along the cornice needs to be thicker than the other boards.

If you want your corrugated metal roof to last as long as possible, you must install a roof crate underneath it. The corrugated sheets are supported steadily by the roof crate, which is typically constructed of plywood or oriented strand board (OSB). It gives the metal panels a level surface to support them on, keeping them firmly in place and preventing sagging.

The ability of a roof crate to evenly distribute weight across the roof structure is one of its main advantages. By reducing the amount of stress placed on individual roof rafters or joists, this distribution improves the roof’s overall structural integrity. The crate also serves as a barrier, keeping out outside elements like moisture and debris and safeguarding the interior spaces and underlying insulation.

It’s crucial to adhere to regional building codes and manufacturer instructions when installing a roof crate. Securing the crate firmly to the roof framing while making sure it is level and gap-free is necessary for proper installation. This careful method helps the roof endure different weather conditions over time and guarantees a sturdy foundation for the corrugated roofing.

In conclusion, even though it is frequently disregarded, the roof crate is essential to the performance and longevity of corrugated metal roofing systems. It guarantees that your roof will be sturdy and functional for many years to come, efficiently and dependably shielding your house or building from the elements by offering a strong foundation and distributing weight.

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