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Glasstack 25-5 Black, Water Based Insulation Adhesive

MFR: 1-GT25-05B-00

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About This Product

Product Info


Glasstack 25 is a slower tacking water base insulation adhesive specially formulated for extrusion coil lines, rotobonders and spray applications, where a fast dry time is not necessary when adhering fiberglass insulation to sheet metal ductwork.
  • LEED EQ Credit 4.1
  • High Strength
  • Use with rotobonders
  • Use with extruder coil lines, will not clog extruder heads
  • Brush, roll, or spray
  • Meets or exceeds all SMACNA requirements
  • Excellent mold and mildew resistance
Warning: this product contains a chemical known to the State of California to cause cancer.


Weight48.94 Pounds (lbs)
Width12 Inches (In)
Height15 Inches (In)
Country of OriginUSA
Length12 Inches (In)
Application Temperature35°F to 110°F (1.6°C to 43.3°C)
BrandPolymer Adhesives
CoverageApproximately 500 sq. feet depending on application technique
Dry Time45 mins
For Use WithAll types of HVAC duct systems
Prop 65Yes
RatingsUL 723 / ASTM E-84
Service Temperature-40°F to 200°F (-40°C to 93.3°C)
Shelf Life18 Months (Unopened)
Size5 Gallon
Solids Content40%
StandardsSCAQMD Rule 1168
Storage Temperature35°F to 110°F (1.6°C to 43.3°C)
TierGlasstack 25
TypeWater Based
UL ListedNo
UL RecognizedYes
Viscosity3500 - 4000 cps


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