Existing Wall Cavity Insulation: Non-Destructive Drill & Fill Foam
Insulating uninsulated exterior walls in older or finished homes used to require tearing down drywall, generating massive construction dust, or blowing in loose cellulose that eventually settles and leaves cavity tops uninsulated. Tiger Foam™ E-84 Slow Rise (Pour-In-Place) formulation expands smoothly upward over 30 to 60 seconds without generating the destructive hydraulic expansion pressure of fast-rise spray foam. Injecting through small, easily patched drill holes, it creates a custom-molded, monolithic thermal and acoustic core inside existing closed walls.
Key Application Benefits
- Non-Destructive Wall Renovation: Injected directly through minimal 5/8″ to 1″ drilled holes in interior drywall or exterior siding, avoiding messy tear-outs and expensive reconstruction.
- Zero Hydraulic Wall Blowout: Specially engineered slow expansion rate allows the liquid chemical to flow around wiring, pipes, and electrical boxes before gently rising to fill the cavity without popping drywall screws.
- Permanent No-Settle Thermal Core: Unlike blown-in cellulose or fiberglass that settles over time to create drafty top voids, rigid closed-cell foam permanently locks into framing lumber.
- Acoustic & Draft Isolation: Seals hidden air bypasses through exterior wall framing while deadening exterior highway, lawnmower, and street noise.
Have Questions? Talk to a Live Foam Specialist
Skip the automated phone trees and call centers. When you call Tiger Foam™, you connect directly with an in-house technical specialist who knows our formulas inside and out.
From sizing your kit and checking surface prep to reviewing code requirements, we’ll make sure your project gets done right the first time.
Call Our Technical Team Directly: 1-800-664-0063
Recommended Product:

TF600SR HFO Slow Rise Spray Foam Insulation Kit
Was $950
Now Priced From $895.00
TF600SR – Our most versatile foam, slow rise formula is designed to completely fill cavities without harming existing walls. Simply drill and fill behind the drywall or plaster – ideal for retrofitting older homes and buildings. It can also be poured into place for ditch or mold released applications. Unlike many of our competitors, this kit comes ready to spray with a 15 ft Gun/Hose Assembly, 8 Cone Nozzle Tips, and kit preparation instructions.
Key features:
- The highest R-Value in the industry at nearly R-7 per inch.
- Impervious to Mold and Moisture.
- Completely seals out unwanted air leaks.
- Protects against dust, air infiltration, pests, and sound.
- Ready-to-use, disposable and recyclable.





TF600SR HFO Slow Rise Spray Foam Insulation Kit