Modern roofing material corrugated board appeared on the Russian market relatively recently, but has already gained immense popularity among users. In addition to the fact that this material is environmentally friendly, it is resistant to various weather disasters and perfectly withstands mechanical loads. It is not unimportant that the corrugated board is very beautiful and attractive. In our article we will tell you how to cover the roof with corrugated board.
The choice of reliable and high-quality corrugated board
In order to find out how to properly cover the roof with corrugated board, it is not superfluous to get acquainted with its characteristics. Decking is profiled sheets, usually they are made of thin galvanized steel, which is coated with a polymer coating.
This technology perfectly protects the product from corrosion, increasing its service life at times.
Modern manufacturers are not limited to the production of one type of corrugated board. Today, corrugated board comes in different versions in color, size, thickness and cost for every taste.
The most ideal option for choosing corrugated board is when the length of its sheet and the length of the roof slope on the building match. In this version of the roofing there will be no transverse joints and, accordingly, water will not get under the roofing.
If the length of the sheets of corrugated board is less than the plot of the roof slope, then you need to prepare for the fact that the sheets need to be laid in several rows.
Accordingly, the installation process itself will be laborious and longer. Yes, and at all joints it will be necessary to produce additional sealing so that water does not penetrate under the roof space.
Subtleties of corrugated board delivery
It is quite possible to cover the roof with corrugated board with your own hands. To do this, you need to ask the seller of the roofing material for instructions that each manufacturer of corrugated board publishes.
It describes step by step the entire process of installing a corrugated roof. But before proceeding with the installation of corrugated board, it must first be delivered to the site.
If you do not know some of the intricacies of the delivery of corrugated board, then the product can be completely spoiled, then the roof will be of poor quality, it will not be able to perform its main function - to protect the house from precipitation and other weather phenomena.
It is important to know:
- Decking must be laid in the car on a solid base. To do this, you can use wooden logs, their length should be longer than the sheets of corrugated board.
- In order for the corrugated board sheets not to move and rub against each other during transportation, they must be pulled together with slings.
- Vehicle speed should not exceed 80 km/h and no sudden movements or braking.
- To perform the loading and unloading of corrugated board manually, you will need two pairs of hands.
- Transfer sheets only in a vertical position.
Laying corrugated roofing is not a complicated technological process, but for safety net you will need the help of a person who has already performed this work.
After all, you do not want to spoil the acquired material? And a couple of extra hands when installing any, even the simplest roof, will never hurt.
Some secrets of lifting corrugated board to the roof need to be known even before you cover the roof with corrugated board:
- In windy weather, it is strongly not recommended to lift the corrugated board onto the roof and install it.
- When lifting corrugated board to a height, use special logs, they must be installed on the ground.
- One sheet is allowed. Several sheets at the same time are strictly forbidden to lift.
- After lifting all the material onto the roof, it is imperative to perform control measurements again, including for the flatness and straightness of the roof slopes.The maximum permissible deviation is only 5 mm.
Before you cover the roof with corrugated board with your own hands, be sure to read the safety instructions for working with this material:
- Try not to walk on the corrugated roof. In the event that this is not possible, you need to take care of soft shoes and try to step in the place where there is a crate in a deflection on a sheet of roofing material.
- Work only with gloves to avoid injury from the sharp edges of the profile sheets.
- It is strictly forbidden to use a grinder to cut a sheet of corrugated board. In those places where the sheet was cut with a grinder, corrosion will occur much faster.
Before you cover the roof with corrugated board yourself, it is not superfluous to ask the experts about what tools you will need to do many jobs.
So, to work with corrugated board you will need:
- Manual scissors for metal. They can cut corrugated board up to 6 mm thick.
- In order to save time and make more accurate cutting of corrugated board, you can use electric shears.
- Electric jigsaw.
- Circular saw with small teeth.
It is strictly forbidden to use the following tools when working with corrugated board:
- Bulgarians.
- Educational circles.
On the eve of the preparatory and other work during the installation of corrugated roofing, we recommend that you look again: how to cover the roof with corrugated board video
The main stages of installation of corrugated roofing
Conventionally, the entire process of installing a roof from corrugated board is divided into three stages:
- Preparatory work.This includes the purchase, transportation and lifting of sheets of corrugated board directly onto the roof.
- Underground space preparation. It involves the arrangement of hydro and vapor barrier.
- Installation of corrugated board on the roof.
We talked about the preparatory work above, now we will talk in more detail about the second and third stages of the installation of the roof. Experts will tell you how to properly cover the roof with corrugated board.
First of all, they recommend making hydro and vapor barriers using a special vapor barrier film, which must be attached to the rafters from the inside.
Important: Lay the vapor barrier film with an overlap, using a special tape for the joints. Be sure to treat all remaining cracks with sealant, this will give the joints reliability and protect the under-roof space from excessive moisture.
Remember: with properly executed hydro and vapor barrier, your roof will retain almost 25% of heat. For a residential attic, the most suitable option is matte insulation.
Moreover, the laying technology is as follows: 1st layer - vapor barrier, 2nd layer - thermal insulation, 3rd layer - waterproofing. Also, do not forget to arrange a "cold" triangle.
It will provide ventilation of cold and warm air. The same purpose is served by cracks in the eaves and holes in the roof ridge. In fact, you will arrange natural ventilation, and it will save the under-roof space from condensate.
And this, in turn, will increase the life of the entire roof.
It is still too early to cover the roof with corrugated board - you need to deal with its waterproofing. It is needed in order to protect the heat-insulating layer from waterlogging.
What is the risk of neglecting the installation of a waterproofing layer?
- Ice may form on the roof, dampness will appear.
- As a result, rotting of all wooden structures of the under-roof space will follow. For the reliability of the waterproofing layer, we recommend using special membranes.
After the hydro- and vapor barrier of the roof has been made, we proceed to attaching the counter-lattice to the rafters. It is best done from a wooden beam with dimensions of 50x50 mm. Then we nail the boards treated with antiseptic solutions.
The step of the crate is an interval of 20-40 cm, it directly depends on the angle of the roof slope: the larger the roof slope, the smaller the distance on the crate.
Installation of corrugated roofing
Only after carrying out all the above preparatory work, we proceed to the main thing - we cut the roof with corrugated board. Recall that you need to start installing corrugated board on the roof from its lower edge.
The sheets are overlapped in two ways; for their fastening, you need to use special self-tapping screws for the roof. A feature of such self-tapping screws is the presence of rubber seals.
Important: screw self-tapping screws into the bend on the wave of the profile sheet.
It should be noted that many types of corrugated board are not suitable for roofing. In areas where there is a large amount of precipitation and gusty winds, experts advise choosing corrugated board, which has a high profile, additional grooves and stiffeners.
It is important to calculate the corrugated roof dimensions. In order to make an accurate calculation, you need to measure the area of \u200b\u200bthe roof, measure the angle of its inclination.
The width of the horizontal overlap of the profiled sheets depends on how steep the slope will be. It is advisable to have a professional check all your calculations.
The corrugated board is attached to the crate in the lower shelf with self-tapping screws for the roof at the rate of 5-8 self-tapping screws per 1 sq. m. The optimal size of self-tapping screws: 4.8x28 mm. Do not forget to make a frontal cut - it will protect the roof from large gusts of wind and possible tearing of the roofing material.
In order to perform all the work efficiently, we recommend that you view: how to cover the roof with corrugated board video. We hope that the practical video guide will more clearly demonstrate the most complex work.
We hope that now you know how to cover the roof with corrugated board on your own and immediately proceed with its installation.
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