Once the sealant is heated, some professionals use a cone-shaped pour pot or witches hat to receive the material. The pot is carried over the cracks with the bottom valve open during installation.
When using a melter/applicator of Crack Sealing Machine, 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. Working with heated materials requires operator concentration and proper attire.
Sealant should never set higher than 1/8” above the pavement level. V-shaped squeegees allow crews to flatten the sealant over the crack and remove excess. This is a particularly important step when Crack Sealing Machine working on the pavement that will eventually be overlayed with Super Pave.
Contractors and municipalities have their own methodology for sealant application. The crack should be filled about three quarters of the way, then allowed to cool. During this Crack Sealing Machine working process, the sealant will shrink in volume 14%.
