Provided by mineral granules, flakes of slate or a metal foil.
Surfacing materials may be in different colours.
Substance incorporated into the bitumen material insuring its dimensional stability and mechanical resistance.
Bitumen or modified bitumen used for impregnation, coating and adhesive if any.
Factory-applied protection by means of sand, talc, paper, plastic film or any material.
Adhesive point of self adhesive area.
These tabs may be in different shapes.