Gilsonite Crack Fillers for Asphalt and Concrete

Sealing cracks keeps water out of the pavement structure and slows deterioration.

Crack filler vs. crack sealant

• Fillers: placed in non-working cracks, often stiffer
• Sealants: elastic materials for working cracks that move with temperature

Gilsonite’s role

Adds hardness, tack-free surface and resistance to tracking in hot weather.

Application

1. Clean and dry cracks (air blow or rout)
2. Heat filler as specified
3. Fill cracks flush or slightly overbanded
4. Allow to cool

Choosing the right material

Hot-pour vs. cold-pour

• Hot-pour fillers are melted in a kettle and give the most durable result.
• Cold-pour fillers are convenient for small jobs and maintenance crews.

Role of gilsonite

Gilsonite increases hardness and softening point, so the filler does not soften and track in summer heat, and leaves a firm, non-tacky surface.

Common mistakes

• Filling wet or dirty cracks – the filler will not bond.
• Overfilling far beyond the crack – it can be picked up by tyres.
• Sealing in very hot weather when cracks are at their narrowest.

See sealer and filler grade gilsonite.