TruTac™ Insulation Adhesive 2128

1 of 1 products in this brand
TruTac™ Insulation Adhesive 2128 is a fast-tack, high solids, acrylic, water-based pressure sensitive (PSA) adhesive developed for rapid assembly of fiberglass insulation, nonwovens, and light-weight materials. It bonds while still wet and resists heat, humidity, moisture, vibration, and freezing temperatures.

Chemical Family: Acrylics & Acrylates

Product Type: 1K (1 component) Adhesive, Solvent free (100% Solids) Adhesive, Waterborne Adhesive

Application Method: Brush, Roller, Spray

Compatible Substrates & Surfaces: Fiberglass

Features: Heat Resistance, High Initial Tack, Humidity Resistant, Low Temperature Resistant, Low Viscosity, Moisture Resistant, Vibration Resistance

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Labeling Claims

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Application Guidelines

Surface Preparation: Surfaces must be free of dust, dirt, oil, grease and moisture to assure proper adhesion.
Application: Adhesive can be applied by spray, roll coat, or brush application.
Coverage: Coverage rates depend on the porosity of the substrates and method of application.

  • Fiberglass Insulation
    • Spray the adhesive on one side of fiberglass insulation at a coverage of 3 - 6 grams wet/ft²
    • Allow up to 30 to 60 seconds depending on temperature and humidity
    • Attach to steel or aluminum surface using hand pressure only
  • Mineral Wool to itself
    • Spray the adhesive to both surfaces
    • Allow up to 30 - 60 seconds depending on temperature and humidity
    • Combine with hand pressure
    • Mineral Wool failure should occur once the water has completely dissipated (depends on temperature and humidity)
  • Fiberglass Facing Material to Mineral Wool and Fiberglass insulation
    • Spray the adhesive onto the facing material
    • Within 30 - 60 seconds combine facing to mineral wool or fiberglass insulation using light pressure.
Spray, Delivery Equipment Recommendations
  • Graco, Binks, and DeVilbiss HVLP spray guns recommended.
  • Delivery of adhesive to spray guns may be from pressure pot or by gravity.
  • Pressure pot feed systems are recommended for best control to achieve desired delivery rate and spray pattern. Pressure pot: Stainless Steel; or plastic liner; intake tube must be stainless steel.
  • Gravity feed: Feed from 300 gallon tote bin positioned on elevated tower.
  • Pumping of TruTac 2128 is not recommended.

HVLP Starting Recommendations:

Type Fluid Nozzle Air Cap Fluid Pressure

Atomization Pressure

Graco 239542 239592 192315 5 - 10 psi 30 - 50 psi
Binks BBR 20 905P 5 - 10 psi 30 - 50 psi
DeVilbiss JGA 510 FX 98 5 - 10 psi 30 - 50 psi
Cleanup Procedures
  • When still wet, use warm soapy water
  • For dry adhesive removal: MEK, isopropyl alcohol, or “environmentaly safe” solvents such as Citrex™ (Inland Technology)


Typical Physical Properties
ValueUnitsTest Method / Conditions
Solid Content54 - 58%-
Viscosity20 - 1,100cP-
Weight per Gallon8.6lb/gal-
Specific Gravity1.0--
pH3.5 - 4.5--
VOC Content*0.0%-

Storage & Handling

Shelf Life
12 Months
Storage Condition
  • Protect from freezing
  • Storage temperatures between 60 - 85°F are recommended

No special handling instructions due to toxicity. This product contains limited amounts of residual monomer. Under normal handling and use conditions the residual monomer should not present a hazard. In storage, the monomer will migrate from the emulsion and establish an equilibrium between the headspace in the storage container and the liquid emulsion. Levels in excess of acceptable exposures can accumulate in non-vented headspaces above the emulsion. All procedures appropriate for a confined space entry should be completed prior to performing any work in a bulk storage tank.