Karmen Peternelj, Sanja Alaber, Miloš Bavec, Stefano Devoto, Stefano Furlani, Goran Glamuzina, Jernej Jež, Tvrtko Korbar, Maja Oven Stanič, Maria Luisa Perissinotto, Fabiana Pieri, Duška Rokavec, Ivan Stanič, Domen Zupančič
The roof represents the fifth façade of the building and is part of the locality's image, which is especially true today when aerial photography is widespread. Roof surfaces are part of the image or identity of a settlement. The structure's verticals (walls) and horizontals (floor divisions) are protected by the roof from permanent moisture, the washing out of binding materials by dripping water, leakage, moisture penetrating wooden structures, the corrosion of metallic load-bearing elements, etc. A building without a roof will decay quickly and there will be damage to all elements of the building, which are then difficult to repair.
Roof reconstructions are commonplace in practice with a common method being the simultaneous restoration of the roofing material and the roof support structure (roof frame). Because slate roofs have only rarely been preserved or can only be found in archive sources or oral accounts, building reconstructions are rare.
Roofs covered with quarried limestone plates have a steep pitch, generally 45°
The preservation of a building's height also entails the preservation of the roof. Roofs covered with quarried limestone plates have a steep pitch, generally 45° but in some cases as much as 65°. The steep pitch of the roof offers rapid and efficient drainage of rainwater. Structures with a pitch of 45° have an advantage over other roofs on account of the simplicity of putting together the roof frame. Component parts are connected at right angles, which reduces the possibility of errors.
When roofs were renovated in the past, extensive technical mistakes were made that are now causing problems with the functioning of buildings. The use of reinforced concrete roof bands is a reasonable solution for strengthening a structural roof from the local point of view. Difficulties arise on account of the significant increase in the building's weight at the roof level, with the walls beneath being insufficiently reinforced, which results in the lower part of the building being too soft in the event of an earthquake despite the upper portion of the building being structurally sound.
