Roof erection is a rather complicated process, since it includes many types of work. Some people do not know how to properly install cornice, what is he like. Each stage of installation is important in terms of value. After all, the quality and lifetime of the whole roof structure as a whole depends on the correctness of the performance.
So what is the cornice, and what role does it play inroof construction? In architecture, it is called the detail of the roofing system, which is installed outside the bearing walls. Due to this, it is protected from moisture during precipitation, as well as penetration into the under-roof space. In addition to the protective effect, it gives the roof a finished look and thereby emphasizes the individuality of each design in its own way. Let's get acquainted with such a roof element as the cornice. What is this, and how is its device carried out - we learn in more detail.
Kinds of cornices
In our time in the world there are manyroofing overhangs, they are divided into classes and methods of installation. On which roofs the cornice is installed, what are roofing overhangs, will help to understand the inexperienced builder a small list, which is located below:
- Cornices that do not have a hem, are used in the device of the roof of the hip type. In some cases it is possible to install on a single-sided or equilateral roof.
- The padded type is mainly used in the construction of hip, as well as gable roof structures.
- The box view is considered non-standard, as it is used in the device system with one ramp and a complex roof.
- A short type unit can be used for any type of construction.
Also, the installation methods can be:flush, open and closed type cornice. What is the front and side overhang - must necessarily know, since they have some differences, the ignorance of which the installation may be erroneous.
Frontal overhang
Frontal cornice is necessary to ensureprotection of the building from the front. It is a construction that is located on the edge of the roof with two slopes. They are only available for gable roof types. In the device of a hip or roof with four skates there are no such cornices, the photo for better perception is located below.
In order to carry out the device of the frontaloverhang on the roof with two slopes, it is necessary first to carry out the removal of the crossbeams, which are attached to rafters, beyond the boundaries of the structure. Then, the lathing and the roofing cake are installed. Only after this is installed the front overhang on the gable roof system. In some cases, the device performs a little differently. On the crate under the vapor barrier is fastened a cornice board, and on it are installed soffits.
Side overhang of the cornice
Side overhang is installed on each roofinclined type. Such a cornice is formed at the expense of rafters, which are carried out beyond the bearing walls of the building. This protrusion should correspond to the size of the blind area and be 50-70 centimeters. If the organization of the roof is carried out by the organization, it offers preliminary different cornices, photos of which are available in special booklets.
In most cases, 50 centimeters is the minimum width of the overhang, but in exceptional moments it may be less.
- In this case, the bearing walls of the building should be well protected from the effects of gusting wind and moisture. This is necessary because with the slanting fall of rain or snow, the walls of the building may get wet.
- Fix the situation with short rafters canby installing fillies. But this is a difficult process, since if the roofing system is already ready, rarely anyone will want to dismantle and make corrections. For this sharp reason, you should carefully consider this issue even in the process of building the roof structure.
Material for the eaves
An important point at the stage when the roof cornice is installed is the choice of material for plating. Each type of finishing material has both advantages and disadvantages:
- Lining - is a good option forfiling cornice. Due to its advantages it is widely used in construction. This material has an incredibly beautiful texture, the surface is treated with special antiseptics and stain. Installation can be carried out at an angle and in a horizontal position.
- Decking - is also popular in the decorationeaves overhangs. After installation, the structure takes on a classic look. Due to the variety of shapes and colors you can embody design ideas.
Features overhangs
Any type of roof is individual, so evenEvery little thing should be done with a special approach. Here, for example: fastening the eaves differs depending on the choice of material for finishing. Therefore, to his trim should be approached very carefully. In case installation will be carried out on rafters already installed in advance, the overhang should be located at the same angle.
This installation method can be used forroofs that have an average slope. In this case, the finishing elements just stuffed on the edges of the rafters. But in order to properly carry out installation, it is necessary to make a flat surface of the lower part of the rafters. Only in this case, the filing will fit perfectly to the roof structure.
