To seal the ductwork in a lower space without air conditioning, you can use a mastic sealant. Mastic is good for sealing the joints of the ductwork because it's fluid and can get into hard-to ...

Mastic sealant is one option that can be used in pavement ... 40°F (4°C), the pavement can be warmed by heating with a hot air lance. Since mastic materials contain aggregate, melter applicators ...