One of the most important aspects of sealant application is timing. In severe hot or cold temperatures, pavement components react and sealant performance is not ideal. Air temperatures between 45° and 65° F put the cracks in the middle of crack, so spring and fall provide the best temperature range for crack sealing. Knowledge of application methods and the machinery involved are important elements for an effective seal.
Techniques and equipment vary at this stage in the crack sealing process, and application is dependant upon the type of sealant and the machinery available to the contractor or municipality.When using a melter/applicator, heated sealant can be applied through a delivery hose and wand. Some models are available with non-heated or heated hose options for higher production.
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