Great Stuff Pro

Great Stuff Pro™ Gaps and Cracks Insulating Spray Foam Sealant Kit Includes a Great Stuff™ Applicator Gun

Great Stuff Pro™ Gaps and Cracks Insulating Spray Foam Sealant Kit Includes a Great Stuff™ Applicator Gun

$87.79
  • SKU: KTGS 1557
  • UPC: 850024402713
  • Shipping: Free Shipping
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Description

The GREAT STUFF PRO™ Gaps & Cracks Contractor Kit is a complete, jobsite-ready solution designed for professional-grade air sealing, insulation, and fireblocking. Ideal for sealing plumbing, electrical, and framing penetrations, this kit includes two cans of GREAT STUFF PRO™ Gaps & Cracks Polyurethane Foam Sealant, a precision dispensing gun, a foam cleaner, and nitrile gloves. The high-performance foam expands to fill gaps up to 3", forming a long-lasting, airtight, and water-resistant seal. With fast cure times, a reusable dispensing system, and outstanding yield, this kit helps pros reduce energy loss, cut down on callbacks, and work more efficiently.

Features & Benefits

  • High Expansion & Fireblock Formulated: Seals gaps up to 3 inches; resists flame spread through concealed spaces (UL Classified)
  • Durable & Airtight: Forms a water-resistant barrier that helps block air, moisture, insects, and allergens
  • Fast Cure Time: Tack-free in 3–10 minutes; trimmable within 1 hour
  • Precision Dispensing: PRO foam gun delivers adjustable, no-drip bead control for cleaner application
  • 30-Day Reusability: Can stays pressurized and usable for up to 30 days when attached to gun
  • Easy Maintenance: Great Stuff™ Foam Cleaner simplifies cleanup of uncured foam and tool flushing
  • Bright Orange Color: Enhances inspection visibility
  • Paintable, Sandable & Stainable: Finish-ready after full cure
  • Cost-Effective: 24–30 oz cans yield equivalent of 22–33 quart tubes of caulk

Technical Data

Property Value
Tack-Free Time 3–10 minutes
Trim Time ~1 hour
Full Cure 8–12 hours (temperature & humidity dependent)
Service Temp (Cured) Up to 240°F (116°C)
Application Temp 40°F to 100°F (4°C to 38°C), RH > 20%
Closed Cell Content 80%
Flexural Strength 8.8 psi
Compressive Strength 9.3 psi
Tensile Strength 14.4 psi
R-Value R-3.8 per inch
UL Rating UL R13655 (Fireblock); ASTM E84 compliant
Reusability 30 days attached to dispensing gun

Recommended Applications

  • Plumbing, pipe, and gas line penetrations
  • Electrical wiring and conduit holes
  • Rim joists and sill plate gaps
  • Attic and HVAC system penetrations
  • General building envelope sealing in new construction and retrofits

Common Substrates

  • Wood framing
  • OSB and plywood
  • Concrete and masonry
  • Metal (steel, aluminum)
  • Glass and rigid plastics

Note: All surfaces should be clean, dry, and free from dust, oil, or release agents for optimal adhesion.

Application Details

Prep Area

  • Clean surface of dust and debris
  • Shake can vigorously for at least 60 seconds before use

Attach Can to Gun

  • Screw can onto dispensing gun (do not overtighten)
  • Open the gun valve to begin use

Apply Foam

  • Pull trigger gently to dispense foam
  • Fill gaps about 1/3 full—foam expands as it cures
  • Adjust bead size using the gun’s flow control knob

Curing

  • Tack-free in 3–10 minutes
  • Trimmable in approximately 60 minutes
  • Fully cured in 8–12 hours at 70°F / 50% RH

After Use

  • Close gun valve to retain pressure in the can
  • Clean nozzle and exterior with GREAT STUFF™ Foam Cleaner
  • For storage beyond 30 days, detach can and flush gun with cleaner

Storage

  • Store upright in a cool, dry place
  • Do not expose cans to temperatures above 120°F (49°C)

Safety Tips

  • Always wear gloves, long sleeves, and eye protection
  • Use in a well-ventilated area
  • Keep away from ignition sources and open flame
  • Do not use in enclosed voids (e.g., behind walls)