If the edge of the roofing strip goes into the groove,

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Covering the parapet with roofing felt Covering the parapet with roofing felt
Please note! In the absence of an auxiliary curb at the junction of the roof and parapet surfaces, a vulnerable cavity is formed. In this place, the flooring can easily be damaged under mechanical impact, resulting in depressurization of the coating.

To avoid problems associated with damage to the finland mobile database material, the joint between the roof surface and the parapet is covered with a support rim, which has 2 angles of 45? in the cross-section. It is made of a mixture based on cement and sand. Instead of this support, you can put a wooden block impregnated with a bio- and fire-protective agent, which in cross-section has the shape of an isosceles triangle. Thanks to such a rim, the coating material will tightly adhere to the entire adjacent surface.
If the waterproofing material is roofing felt, then using hot bitumen mastic, the roll material must be glued to the entire surface of the roof, starting from its base and ending with the parapet wall, including the rim. After some time, the operation must be repeated, covering the roof with a second layer of roofing felt. During the construction of the parapet, a special groove is made in its inner surface. When joining two surfaces, the edge of the roofing material from the outside is inserted into the groove. It is possible to form a junction with roofing felt being laid onto the upper section of the parapet.

the material must be fixed with a metal strip, which will press the roofing felt to the wall using dowels. This part and the joint are sealed with a sealant. The next layer will be paint, protecting the structure from precipitation. At the end, a metal apron is put on the parapet, which can be attached to the strip.
In the option with the roofing felt being brought to the top of the parapet, the roofing material is first fixed with heated bitumen, and then covered with an apron or slabs.
Installing an apron on a parapetInstalling an apron on a parapet
There are technologies for joining these surfaces using mastic agents with hydrophobic characteristics. With this treatment, the coating is created without seams, and the abutment is reliably sealed.
roof