It doesn’t matter what material the roof is made of, but if its weaknesses are not strengthened, then the leaks cannot be avoided. Weak places of the roof are considered to be the yendovs, side and cornice overhangs, the adjacency of the roof material to the pipes and walls. Protection for these places are additional elements.
Without these details, the installation of roofing material is almost impossible. Elements are made of the same material as the main roof and they can have any shape, which allows you to diversify the architectural style of the construction in general.
As you already understood, all these details not only protect the building from moisture penetration, but also are decorative in nature. The same elements that serve for snow retention, castings, caps are made of galvanized sheet steel, since they should be quite strong. In addition, they are covered with a polymer color coating, which coincides with the color of the roof.
Additional elements can be divided into several types: for the roof; for siding; For fences.
But experts argue that this separation is conditional, since one and the same element can be used in the decoration of different structures. It is worth remembering that if you use additional elements not in full, that is, the risk of destruction of the building.
For example, in the decoration of the metal roof, the inner and outer angle, cornice bar, tide of the basement, transition strips are used. These details serve to close complex crossings and seal corner places.
The internal angles of the roof slopes require sealing with special care and using the internal yendova and external. The main role is played by the inner Endov, and the external plays only a decorative role and does not save from leaks.
The internal and external corners are closed with corner strips, they not only reliably seal the corners, but also add aesthetics to the construction.
