Published · Updated
Definition
Asphalt crack filling is a proactive asphalt maintenance technique that involves applying a specialized, flexible material into cracks and fissures in an asphalt pavement surface. The primary goal of asphalt crack filling is to create a watertight seal that prevents water, debris, and other damaging elements from penetrating the pavement’s sub-layers.
Stopping Damage at its Roots
Crack filling stops damage where it starts: it seals water out of the base layers, halts cracks before they widen into alligator cracking, adds 3 to 7 years of pavement life, and is the step that has to come before seal coating.
Prevents Water Infiltration
The primary purpose of crack filling is to create a watertight seal that prevents water from seeping into the asphalt’s base layers. Water infiltration is the leading cause of base erosion, void formation, and the eventual development of costly potholes.
Halts Crack Propagation
By filling existing cracks, this maintenance technique stops cracks from widening, spreading, and evolving into more severe “alligator cracking.” This significantly preserves the structural integrity of the pavement.
Extends Pavement Life
Proactive crack sealing can extend the life of your asphalt by 3 to 7 years, delaying the need for expensive resurfacing or reconstruction. It’s a key component in maximizing the return on your original paving investment.
Essential Precursor to Seal Coating
It’s imperative that any existing cracks or potholes are properly cleaned and filled before seal coating is applied. Since seal coating is a surface treatment and does not fill structural cracks, crack filling is an indispensable step for comprehensive protection.