Lathing is a system that is used as the basis for the installation of metal tiles. The frame should consist of boards of the same size. It is important to follow other recommendations of the installation technology, because the structure will become an important element of the roof and will ensure its durability and integrity. The crate can be called the foundation of the roof and the key to the peace of mind of the owner of the house, which can be achieved with a reliable and proper fastening of the system.
Preparing boards
Before you make a crate for a metal tile, you should prepare the boards. Their parameters (even in the same batch) may differ slightly from each other in thickness. In practice, it turns out that the product units will have a thickness of 25 to 35 mm when the supplier specifies a parameter within 30 mm. Such a deviation cancall it a common occurrence, and more accurate dimensions are only for planed and calibrated boards. However, if you arrange a crate for a metal tile from this material, then the budget will increase several times.
Determination of the crate step
If you, like some owners of private real estate, wondered how to make a roof crate for metal tiles, then you must decide on the distance between the elements. The step will be influenced by the type of coating, or rather, the profile. With what distance from each other to fasten the boards, you can find out from the instructions of the manufacturer of the covering material. To determine this parameter, measurements should be taken from the bottom edge of the starting board to the top edge of the one that follows it.
If you are faced with the question of how to make a crate for a metal tile, you should know that the distance between the starting and following elements should be less. The distance between the boards will also be affected by the slope of the slope, as well as the width of the protrusion of the roof over the frame bar. The impact on the calculations will indicate the presence or absence of a drain. Its linear dimensions can also lead to changes in values.
If the drain is attached to the front board, then about 30 mm must be added to the ledge. An important parameter is also the diameter of the gutter for the drain. If its value is 90 mm, then the protrusion will be different from the one whose diameter is 120 mm. You can measure the width of the protrusion of the covering material from the frontal boardto the cut of the rafter system. The steepness of the slope in this case will depend on how much the sheet of metal must be released in order to obtain the desired result.
When a builder faces the question of how to make a crate for a metal tile, he should know that there is no way to make a mistake in the calculations. After all, if this happens, it may lead to an incorrect location of the crate, the elements of which will not coincide with the installation points of the self-tapping screws.
In order to determine the step between the first two planks, you should lay the rule on the truss system, then measure the distance between the upper edge of the first wave and the bottom of the metal tile sheet, this will allow you to make a mark. The rule at the next stage is extended to the length of the sheet, it is necessary to attach a square to the frontal board and mark the point where the ledge should be. A line is drawn from the edge of the frontal board to the marked level.
The thickness of the lower bar should be made larger than the others, this will prevent sagging of the edge of the covering material. If you are faced with the task of how to properly make a crate for a metal tile, then you should pay attention to the step of the transverse wave of the material. These values will be equal. But between the first and the following boards, a distance of 230 mm must be maintained. If the step of the transverse wave increases to 350 and 400 mm, then it will be necessary to remove the first two boards from each other by 280 and 330 mm, respectively.
Sequence of actions when installing the frame system
Before you make the crate under the metal tile, you must prepare the beam for the rafters. Its minimum size is 50x150 mm. Boards 25x100 mm are prepared for the crate. If the system will provide for the presence of a counter-lattice, then a board of 25x50 mm will be needed for it. The step between the rafters should be equal to the limit from 600 to 90 mm.
The starting board should be along the eaves, it is important not to allow it to protrude beyond the overhang. Many novice craftsmen are wondering how to properly make a crate for a metal tile, you can learn this process step by step if you read the article.
The distance between the elements is selected in such a way that the step from the board extending beyond the cornice is 50 mm less than the distance between the other planks. To make sure that this parameter was chosen correctly, you can still on the ground. To do this, two trimming boards are parallel to each other, and then a fragment of covering material is superimposed on them. This will determine the length of the ledge to allow water to drain.
If the ledge is too long, it will cause water to overflow over the edge of the gutter. With a short protrusion, the liquid will flow between the frontal board and the gutter. The long protrusion also contributes to the deformation of the canvas under the weight of icicles and snow. If you, too, were among those who thought about the question of how to make a roof crate under a metal tile, then you must prepare a tape measure to perform the markup. It is necessary to actfrom the first board that goes to the ledge.
The next step is to fix the ridge bars. The wind turbine should be located above the crate. Its height is in the range from 35 to 55 mm. These values correspond to the height of the profile of the roofing material. To simplify the work of fixing the ridge in the right place, it is necessary to place additional boards, the cross section of which will be 25x100 mm. Additional elements must be fixed in the place where the chimney exits.
Installation of brackets
Before you start laying sheets of metal tiles, you should fix the brackets. They are necessary for screwing gutters to them. Between adjacent brackets, a step should be maintained in the range from 500 to 600 mm. Brackets must be installed on both edges. They are fixed in such a way as to ensure a gutter slope of 3 °. To check this value, use a cord and a spirit level.
A cornice strip is installed in advance, located along the cornice overhang. After installing the brackets, you can start nailing the bottom board of the crate. A cornice strip is fixed to it, while it is important to ensure that the lower edge overlaps with the edge of the gutter, which will ensure that condensate drains from the strip into the gutter.
When you can refuse the crate
For sale is a self-supporting metal tile, the shape of which allows the installation of sheets withoutpre-installation of the crate. Each product has stiffening ribs, which are formed by pressing. This makes it possible to obtain sheets with a width of up to 4 m. At the same time, the metal does not bend, and the panel remains stable.
It is easy to install, and the fixation is carried out on the rafters, the distance between which should be such that it is possible to join the sheets in these places. Mounting is also allowed on the counter-lattice. The cost of this material is much higher, it is less common today. In this regard, the installation of traditional metal tiles will be a more advantageous option for the roof.
The difference between the metal tile "Monterrey"
Before you make a crate under the Monterrey metal tile, you need to familiarize yourself with its main differences. Among others, the possibility of using this material for roofs with a slope that exceeds 14 ° should be highlighted. A reinforced truss system is not required, because the weight per square meter is less than 5 kg. The thickness of the board under the metal tile can be equal to the limit from 27 to 35 mm.
Crate for "Monterrey"
Before work, to ensure accuracy, it is necessary to calibrate the elements. Systems do not have to be continuous. If a step of more than 10 cm is maintained between the rafters, then boards of a more impressive thickness must be used for the frame under the roofing.
If you are wondering howto correctly make the crate for the Monterrey metal tile, then they must take into account the generally accepted section of the elements, which is usually equal to 25x100 mm or 32x100 mm. This is true for boards. If you plan to use bars, then their cross section can be 50x50 mm. For the lowest element, this value should be about 15 mm larger. The minimum value is 10 mm and is equal to the height of the shear wave.
Instructions for installing the first element. Pitch Definition
The first element is installed parallel to the eaves, because the evenness of the first sheet of tiles will depend on its correct location. If you decide to make a crate for a metal tile with your own hands, then you must calculate the step between the elements, taking into account the transverse wave length, which is not the same for different models of metal tiles. Usually the desired distance between the boards reaches 350 mm. Only the second one should be laid, departing from the first about 280 mm.
Conclusion
In those places where chimneys, valleys are located, as well as along the perimeter of skylights and dormer windows, it is necessary to arrange a continuous crate. The last element is selected taking into account the height, which will be equal to the cropped profile sheet. The latter should not bend during installation.
