Here are some rules for arranging the junction of roll roofing to the parapet:
Posted: Thu Feb 06, 2025 7:04 am
The junction of the flat roof with the parapet must be covered with several layers of waterproofing. When using mastic, reinforcement should be provided. It is best to use geotextiles or materials with fiberglass. The insulation is laid with an overlap of 15 cm. The first layer of material is pressed against the vertical plane through the side, smearing it with mastic or emulsion. As soon as the first layer of mastic cools, another layer of insulation is laid. At the end, the resulting pie is attached to the roof with an apron.
Adjoining the parapet and soft roof
If a soft roll covering is used to cover the roof, then the junction of the roof with the parapet must be especially well waterproofed. For this purpose, the roofing material is finland mobile database onto the vertical wall during installation. In this case, a special support element is provided at the junction of the planes.
It is worth noting that if such a curb is not provided, voids will form at the point where the soft roofing adjoins the parapet, which will make the roofing vulnerable to mechanical impact. In such a place, there is a high probability of damage and depressurization of the roofing.
Damage to the soft roofing can be prevented by laying a support edge in the form of a triangle with two 45ยบ angles at the junction. It can be made from a cement-sand mixture, or a wooden beam impregnated with an antiseptic and fire retardant can be laid. This will ensure tight adhesion of the roll material to the entire surface of the support and parapet.
In cases where roofing felt is used as waterproofing, it must be glued not only to the entire roof plane, but also to the parapet wall, including the support edge. For this, heated bitumen mastic is used. When the first layer of waterproofing has cooled, another layer of roofing felt must be laid in a similar manner. During the construction of the parapet wall, a special gutter is arranged in it from the inside. During the arrangement of the abutment, the edge of the soft roofing covering from the outside is inserted into this gutter and secured. Alternatively, the roll material can be inserted onto the upper plane of the parapet wall.
Provided that a groove is made in the curb, the roll covering that goes into it must be fixed to the wall using a metal strip and dowels. In this case, all joints and holes must be carefully sealed. After that, the area is covered with a layer of paint that will protect the junction from rain. At the last stage, the parapet is covered with a metal apron, which can be fixed to the strip.
If the roofing felt will cover not only the wall, but also the upper plane of the parapet, then first of all it must be glued with molten bitumen, and then covered with concrete slabs or a metal apron.
Modern technologies allow to arrange joints between the roof and parapet using special hydrophobic mastic compounds. The result is an absolutely hermetic seamless coating.
Adjoining the parapet and soft roof
If a soft roll covering is used to cover the roof, then the junction of the roof with the parapet must be especially well waterproofed. For this purpose, the roofing material is finland mobile database onto the vertical wall during installation. In this case, a special support element is provided at the junction of the planes.
It is worth noting that if such a curb is not provided, voids will form at the point where the soft roofing adjoins the parapet, which will make the roofing vulnerable to mechanical impact. In such a place, there is a high probability of damage and depressurization of the roofing.
Damage to the soft roofing can be prevented by laying a support edge in the form of a triangle with two 45ยบ angles at the junction. It can be made from a cement-sand mixture, or a wooden beam impregnated with an antiseptic and fire retardant can be laid. This will ensure tight adhesion of the roll material to the entire surface of the support and parapet.
In cases where roofing felt is used as waterproofing, it must be glued not only to the entire roof plane, but also to the parapet wall, including the support edge. For this, heated bitumen mastic is used. When the first layer of waterproofing has cooled, another layer of roofing felt must be laid in a similar manner. During the construction of the parapet wall, a special gutter is arranged in it from the inside. During the arrangement of the abutment, the edge of the soft roofing covering from the outside is inserted into this gutter and secured. Alternatively, the roll material can be inserted onto the upper plane of the parapet wall.
Provided that a groove is made in the curb, the roll covering that goes into it must be fixed to the wall using a metal strip and dowels. In this case, all joints and holes must be carefully sealed. After that, the area is covered with a layer of paint that will protect the junction from rain. At the last stage, the parapet is covered with a metal apron, which can be fixed to the strip.
If the roofing felt will cover not only the wall, but also the upper plane of the parapet, then first of all it must be glued with molten bitumen, and then covered with concrete slabs or a metal apron.
Modern technologies allow to arrange joints between the roof and parapet using special hydrophobic mastic compounds. The result is an absolutely hermetic seamless coating.