Water is a road’s worst enemy and crack sealing is our first defence against pavement deterioration. Each year we perform approximately 2 million lineal metres of crack sealing, enough to fill a crack between Vancouver, BC and Thunder Bay, ON.
Crack sealing extends the life of pavement by preventing water from getting below the surface and causing damage. Liquid asphalt filler is applied in the spring to seal cracks that developed from winter wear and tear. This filler expands and contracts with the heat of the summer and freezing of winter. This keeps the surface safe and smooth by helping to reduce potholes.
When crack sealing we first remove dirt and loose gravel by blowing compressed air in cracks, then the liquid filler is placed in the crack with an overlap on each side and then covered with sand. The sand is left in place for a few days while the filler sets and to absorb any excess liquid. This is why you may encounter scribbles of sand along the road in the spring.
Crack sealing usually takes place from April to July. During this time you will see changeable message boards with information about crack sealing operations ahead and asking you to reduce your speed, these operation are also posted on DriveBC. Our crews and families really appreciate your patience and care when driving past.
During crack sealing operation, sand can be a nuisance to motorists – especially cyclist and motorcyclists. Reducing speeds will lower the potential for sand to be flicked up at your vehicle, other vehicles and workers. Also:
- Leave a greater distance between yourself and the vehicles in front
- Wear protective goggles or sun glasses if riding a bike or motorcycle
- Check DriveBC and seek an alternate route if possible
Each spring you will see crack sealing taking place along sections of our highways throughout the province.