What is the roof cornice: definition, function, installation rules

The main characteristics of the roof cornice

Cornice installations are caused to cover the rafters. If rafters do not go beyond the walls, they are lengthened by means of fillets. This method is quite common. A variety of kinds of fillets are used.

The gable of the house needs special protection. And in this case helps the roof cornice. The width of roofing( cornice) overhangs, covering the gable from the manifestations of the environment, can have parameters of half a meter. It is important to install a cornice board on the end of the roof. The lower edge of the overhang is covered with protective materials. The eaves assembly is closed with a wooden board( the most common method).

Note: the installation of pitched and frontal overhangs has a different method of installation.

Typical classification of the roof cornice

Wizards have developed enough schemes for mounting the cornice. Consequently, many types of roofing overhangs are considered:

1. Unfiled cornices - cornices, used for mounting the hip( gable roof) of the building. Their use was also observed in the construction of a single-pitched and gable roof.
2. Folded - spread in two-slope and hip roofs.
3. Box type of cornices - has non-standard use. It is used for the installation of single-pitched roofs and a broken roofing scheme.

4. A shorter roofing unit( a striking example is the Danish roof).We use for all the above types of roofs.

Roof cornice: consider other types

The overhang unit has a specific character. Its type is applied according to the climatic conditions of the area. There are several types:

1. Overhang of the cornice flush

Its arrangement occurs in the absence of a projecting rafter system. The rafter board is in this case fixed by a drainage structure, located parallel to the ground surface. Such an installation will cover the gable part from the atmospheric precipitation. An additional advantage is the possibility of arranging gutters, providing the withdrawal of accumulated water.

Negative characteristic of the eaves cornice flush:

- openness of the upper edge of the wall, the possibility of moisture falling on it;

- insufficient node length( half a meter).

Compensation for the absence of rafter projections - filly( cuttings of wooden beams are used, they are attached to the rafters and then the cornice system is screwed to them).

1. Open knot of the cornice

It is created with a projection of the gable roof gable installation beyond the pediment. Fastening of the drainage structure occurs on the side of the rafters.

The open cornice assembly is functional in its functional qualities for the broken roof type.

1. Closed overhang assembly

Are created in the process of closing rafters that extend beyond the pediment. The groove technology is used from the inside. It is attached to the components of the cornice.

It is important to note: the pediment can be mounted, leaving the perimeter of the walls. The chosen option shows the preferences of the owner of the house and the recommendations of a specialist. Any choice implies a covering of an unprotected surface of the cornice overhang.

What material should I use for the roof cornice?

Let's consider a list of the necessary materials, often used for sheathing the eaves:

• Board( better needles);

• Galvanized steel strata;

• Aluminum sheets;

It is important to note: the wooden base is selected moisture-proof, which can not be destroyed under the influence of external factors. Pre-treated with a moisture barrier( based on paint, varnish).The thickness of the wooden material - an average of 0.2 centimeters. The thickness of the steel seams is 0.08 centimeters. They should be uncovered with paint. The parameters of aluminum raw materials are 0.6 centimeters thick and 30 centimeters wide.

Used tools:

1. Level
2. Hammer
3. Measuring tape measure
4. Electric screwdriver
5. Angle measuring tape
6. Marker for marking length
7. Auxiliary fastening parts.

For more details, we suggest viewing the video in the next tab: