Granules

The colored granules come from the grinding of an opaque metamorphic rock. They are particularly suitable for surfacing bitumen roof shingles and for highway applications (as a natural insulation layer).

Technical characteristics

Category	Particle size scale	Technical characteristics
Natural	Large Standard	Insulation for highway applications Roof waterproofing
Colored	Standard Fine	High end Anti-dust treatment Limits oil rising Aesthetic Reflective (if white) or keeps heat (if dark color)
Extra-white granulates	Standard	New generation of highly reflective granules, specifically developed for reflectivity needs. They are made from a supply of French minerals.