Filfoam is a professional-grade, one-component polyurethane foam specifically engineered to fill, seal, and insulate large voids and gaps. Designed for both interior and exterior applications, this 500ml aerosol provides a controlled, high-expansion bead that cures into a rigid, closed-cell structure with exceptional thermal and acoustic properties.
Key Performance Features
- Rapid Expansion & High Yield: Expands significantly upon application, allowing a single 500ml can to fill substantial volumes and deep structural cavities efficiently.
- Superior Thermal & Acoustic Insulation: Features a high R-value for energy-saving heat retention and acts as an effective sound-dampening barrier between rooms or floors.
- Excellent Multi-Substrate Adhesion: Bonds powerfully to a wide variety of construction materials, including brick, concrete, plaster, wood, metal, and most plastics.
- Structural Stability: Once cured, the foam provides a semi-rigid support that helps stabilize window frames, door frames, and loose masonry.
Ideal Applications
- Frame Installation: The primary choice for filling the "rough-opening" gaps between door/window frames and the wall to eliminate drafts.
- Service Penetrations: Perfect for sealing around plumbing pipes, electrical conduits, and air conditioning ductwork passing through walls or ceilings.
- Roofing & Eaves: Ideal for sealing gaps in roof ridges, eaves, and corrugated sheeting to prevent dust, bird, and pest ingress.
- General Cavity Filling: Excellent for insulating wall cavities, floorboards, and larger cracks in masonry that require a weather-tight seal.
Product Benefits
- Pest & Vermin Proof: Creates a solid, durable barrier that prevents rodents and insects from entering through structural gaps.
- Easy Post-Cure Finishing: Once fully hardened, Filfoam can be easily trimmed with a sharp blade, sanded smooth, and painted to match the surrounding surface.
- Weather Resistant: Formulated to withstand environmental moisture and temperature fluctuations (must be painted or covered for UV protection).
Pro Tip: For maximum expansion and a faster cure, lightly mist the substrate with a water sprayer before application. Because Filfoam is a high-expansion product, only fill the cavity about 50% full; the foam will continue to grow as it reacts with atmospheric moisture.
