METHOD FOR ELIMINATION OF BITUMEN ROLL ROOFING MATERIAL SEPARATION Russian patent published in 2005 - IPC

FIELD: building, particularly to prevent separation of roofing material layers during roof repair.

SUBSTANCE: method involves injecting material forming liquid bitumen layer in roof area of separation through orifices arranged in waterproofing mat above the area; consolidating the area to be repaired. Orifices are spaced 0.2-2.0 m apart. At the beginning of material injection process air or water is removed from the cavities through above orifices and then emulsified bitumen, including 30-80% of bitumen, is fed. Emulsified bitumen is spread in cavity over the full area of separation using weight, which is moved over the roof surface. Before compaction the area of separation is heated up to 100-160°C and then held at this temperature up to bitumen dewatering and water vapor discharge from the area through above orifices in atmosphere.

EFFECT: increased reliability of waterproofing mat gluing in presence of water cavities regardless of separation area and reduced time of roof repair.