The smoke pipe should be surrounded by a steel collar, the edges of which from the side of the ridge are launched under the roofing material, and from the side of the cornice are left on top. This forms a kind of apron.
The smoke pipe should be surrounded by a steel collar, the edges of which from the side of the ridge are launched under the roofing material, and from the side of the cornice are left on top. This forms a kind of apron.
