Principles of joining the roof to the parapet

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Although the parapet is not one of the main parts of the house, it performs protective and aesthetic functions well. This is a small wall that is arranged along the perimeter of the roof and looks like an enclosing structure. Such a structure is arranged both on pitched and flat roofs. In the first case, the parapet is built above the cornice and is clearly visible from below. In the second case, a small fence completely closes the roof from view. To prevent precipitation and air currents from destroying the parapet, this elevation is covered with an apron, which can be made of galvanized or copper sheet metal. Structurally, it is equipped with special drippers, with the help of which water is diverted from the building. Drippers prevent water from entering the protected areas of the parapet.

There are options for brick or concrete parapets covered not with metal aprons, but with concrete slabs.

Metal apron

In order for aprons made of finland mobile database metal sheets to be securely attached to the fence, grooves and niches are created in the parapet structure. The upper edges of the aprons, which are metal sheets bent into profile products, are inserted into these grooves. Aprons can also be used from black steel for roofing, but it must be painted on all sides using heated drying oil. Niches and grooves are provided for the device of abutment by construction necessity. From practice it is known that a single roofing sheet is not enough. This happens because the vertical sections are not always even. In addition, unstable temperature conditions and precipitation have a negative effect on the fastening. Due to these negative phenomena, the apron may not fit tightly to the curb. With the help of grooves, these problems are solved.

When the edge of a sheet made of one material or another is inserted into a niche, its height must be at least 0.1 m.
If a groove is used to install the apron, the latter is sealed with cement-sand mortar, which protects the structure from precipitation.
Chase

At a distance of 1 m from each other along the length of the parapet, wooden plugs soaked in antiseptic are installed. Bars with a triangular cross-section are attached to the plugs. This structure is covered with an apron on top.