600 HB Hand Operated Sealers

Hand sealing machines use heated seal wires which are activated when the seal bar is pressed close. A silicone sealing pad that can withstand direct heat contact is also made from the sealing bar. The sealing bar forces the wire and the film to melt the seal-forming material and mend it.Hand sealing involves adding extra adhesive under each shingle tab. With this method the shingles are not only nailed and secured with the manufacturers seal strip, but also secured with extra adhesive. The manufacturers recommend hand sealing on steep sloped roofs and in colder temperatures.