Four Categories Of HVAC Duct Sealants
This system is the original
duct sealing method employed by
mechanical contractors for over 35 years.á The system is named for its method of using both gypsum impregnated 150Æ roll of cloth tape and a safe non-flammable liquid water base activator available in one-gallon pails.á Gypsum tape is immersed in the activator by way of a pail-mounted dispenser. The activated tape is then applied, in the wet state to drive cleat
transverse duct joints. Care
should be taken to avoid freezing
temperature during dry and cure time.á The two materials combine to form a cured rock hard seal that is as hard as the cast applied by a physician to set a broken limb.á
Although relatively expensive and
labor intensive the Two Part
Sealing System provides the very best method for long lasting duct seal. Countless Architects and
Engineers have specified this
water base sealing system over the years.
Two Part Duct Sealing System