What is the cornice, what is the installation of overhangs

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 it like? Each stage of installation is important in terms of value. After all, on the correct implementation depends on the quality and lifetime of the entire structure of the roof as a whole.

So what is the cornice, and what role does it play in the construction of the roof? In architecture, it is called the detail of the roofing system , which is installed outside the bearing walls. This provides protection from moisture in the event of 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

Nowadays in the world there are many roof overhangs, they are divided into classes and methods of installation. On which roofs the cornice is mounted, what are roofing overhangs, will help to understand the inexperienced builder a small list, which is located below:

• Cornices that do not have filing 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.
• Box view is considered non-standard, as it is used in the device systems 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 cornice. What is the frontal and lateral overhang - must necessarily know, since they have some differences, because of ignorance of which the installation may be erroneous.

Frontal overhang

Frontal cornice is necessary to ensure the protection of the building from the front. It is a construction that is located along 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 frontal overhang on the roof with two slopes, it is necessary first of all to carry out the removal of the crossbeams, which are fastened to the rafters, beyond the boundaries of the structure. Then, the lavatory and roofing cake is 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 the cornice board, and on it are installed soffits.

Side overhang of the cornice

The overhang is installed on each roof of an inclined 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 dimensions 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 happens less.

• In this case, the bearing walls of the building should be well protected against the effects of gusty wind and moisture. This is necessary, because with the oblique fall of rain or snow, the walls of the building can get wet.
• To correct the situation with short rafters it is possible by installing the fillets. But this is a complex 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 in the process of constructing the roof structure.

Material for finishing the cornice

An important point in the stage when installing the roof cornice is the selection of the material for the skin. Each type of finishing material has both pluses and minuses:

• Lining - is a good option for filing eaves. Due to its merits it is widely used in construction. This material has an incredibly beautiful texture, the surface is treated with special antiseptics and stain. The installation can be carried out at an angle and in a horizontal position.
• Profiled sheeting is also popular in the decoration of cornice overhangs. After installation, the design takes on a classic look. Due to the variety of shapes and colors, it is possible to realize designer's ideas.

Features of overhangs

Any type of roof is individual, so even every small thing should be done with a special approach. Here, for example: the fixing of the cornice differs depending on the choice of material for decoration. Therefore, to its plating should be approached extremely carefully. If the installation is to be carried out on prefabricated rafters, the overhang should be at the same angle.

This installation method can be used for roofs that have an average level of slope. In this case, the finishing elements are simply stuffed onto the edges of the rafters. But in order to properly carry out the installation, it is necessary to make an even surface of the lower part of the rafters. Only in this case the binder will ideally fit the roof construction.