TEC7 PUR B2 Expanding Foam

Tec7 Pur B2 Expanding Foam is a professional-grade, high-performance polyurethane aerosol foam engineered for heavy-duty sealing, thermal insulation, structural filling, and acoustic dampening. Formulated to meet strict construction regulations, this premium foam carries a certified B2 fire-retardant classification, making it highly recommended for contractors, window fitters, and DIYers working on critical building envelopes, fire-rated partition steps, and general structural retrofits. It expands reliably to fill irregular voids while forming an airtight, weather-resistant barrier against the elements.

Why Choose Tec7 Pur B2 Expanding Foam?

• Certified B2 Fire-Rated Formulation: Engineered to comply with German standard DIN 4102-1 for fire behavior, achieving a solid B2 flame-retardant classification. This specialized chemical composition slows down the spread of smoke and fire through structural joints, providing vital peace of mind in modern residential and commercial builds.

• Superior Thermal and Acoustic Insulation: Cures to form a highly dense, uniform micro-cellular structure that offers exceptional thermal resistance and acoustic dampening characteristics. It effectively seals out cold drafts, minimizes heat loss, and blocks environmental noise transmission when injected around window frames, external door liners, and pipe penetrations.

• High-Strength Structural Adhesion: Exhibits immense mechanical bonding strength across a broad spectrum of common construction materials. It fuses permanently to porous and non-porous substrates including concrete, brickwork, stone, timber, plasterboard, and various metals without requiring separate primers.

• Controlled Expansion and Minimal Shrinkage: Optimized to expand smoothly into complex voids, deep wall cavities, and hidden service shafts. Once fully cured, the foam retains its structural volume with virtually zero post-shrinkage or pulling away, preventing long-term structural gaps or moisture ingress pathing.

• Indispensable Construction Versatility: The perfect heavy-duty utility sealant for modern site fit-outs and building restorations, this robust polyurethane compound is designed for:

  • Filling and insulating partition walls and roof tile connections

  • Sealing perimeter voids around structural window frames and external door casings

  • Insulating plumbing pipework feeds, electrical conduit channels, and HVAC ducting

  • Soundproofing wall cavities and internal service voids

Key Features

• High-performance expanding polyurethane foam

• Fire-rated (B2 classification)

• Strong adhesion to concrete, brick, wood, and metals

• Ideal for filling, sealing, and insulating gaps

• Provides thermal and acoustic insulation

• Perfect for construction, renovation, and DIY applications

Technical Specifications

• Brand: Tec7

• Product Name: Pur B2

• Product Type: Polyurethane Expanding Foam

• Fire Safety Classification: B2 Flammability Rating (DIN 4102-1 Compliant)

• Insulation Properties: High Thermal & Acoustic Performance

• Cure System: Moisture Curing Micro-Cellular Matrix

• Substrate Compatibility: Concrete, Brick, Stone, Masonry, Wood, Metal, and PVC (Not suitable for PE, PP, or PTFE)

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