Crack sealing prevents water from entering into the sub-base of the asphalt under the crack. When water enters cracks or is improperly drained, it softens the supporting sub-base and leads to alligators and eventual pothole formation. Winter accelerates this process due to freeze
/ thaw processes where water that is trapped in the asphalt
sub-base freezes, expands, and pushes the pavement up causing
frost heaves. When warmer weather arrives, thawing causes the
sub-base to contract and soften, leaving a void. Without support,
the pavement ultimately caves in.
Hot rubber crack sealing is the best process available today for sealing cracks and preventing water seepage and frost heaves. The rubber is a highly elastic material that expands and contracts according to weather conditions. Cracks are cleaned and blown or routed out, prior to applying sealant.
Tips for Homeowners on Crack Sealing