Mastic containing elastomeric bitumen, volatile solvents, asbestos-free fibres and mineral fillers. It contains aluminum pigmentation distributed through the entire product for superior UV protection. It is used as a caulking mastic and for filling cracks. It is compatible with bitumen-based products and adheres to a variety of materials without primer.BenefitsMay be applied to damp surfacesAdheres to a wide variety of materialsWithstands temperature variationsExcellent UV resistanceMade in Canada