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This foam sealant is specially engineered with fire-retardant additives that meet stringent international standards (such as GB 8624 B1, EN 13501-1). In the event of fire, it exhibits excellent resistance to flame propagation and is designed to be self-extinguishing upon removal of the ignition source. It forms a protective char layer that helps delay the spread of flames and hot gases through openings, making it a critical component for passive fire protection in door and window perimeters, thereby enhancing overall building safety.
Unlike standard insulating foams that remain soft, this product cures to a high-hardness, rigid structure with minimal long-term shrinkage. This provides outstanding mechanical strength and load-bearing capacity, ensuring that installed doors and windows remain securely fixed, resistant to sagging, and unaffected by wind pressure or operational stresses. The rigid seal also prevents compression over time, guaranteeing a permanent, gap-free fit.
The high-density, closed-cell structure of the cured foam acts as an effective sound-dampening barrier. It significantly reduces the transmission of airborne noise (such as traffic, urban sounds, and voices) through gaps around window and door frames. This contributes to a noticeably quieter, more peaceful, and comfortable indoor environment, meeting the growing demand for enhanced acoustic comfort in modern construction.
It adheres tenaciously to a wide variety of common construction materials including concrete, brick, wood, PVC, and metals. By completely filling irregular cavities and gaps, it creates a continuous air and weather barrier. This superior seal blocks drafts, moisture infiltration, and dust, dramatically improving the building's thermal insulation (reducing heating/cooling costs) and protecting against water damage.
This foam sealant meets stringent international fire safety standards, including GB 8624 B1 (Chinese standard) and EN 13501-1 Class B (European standard). These certifications confirm that the product exhibits low flame spread, self-extinguishing properties, and forms a protective char layer to delay fire propagation through construction gaps.
Unlike standard foam sealants that remain soft and compressible after curing, this product cures into a rigid, high-hardness structure with minimal long-term shrinkage. This means it provides superior mechanical strength, prevents gaps from re-opening over time, and keeps doors and windows securely fixed even under wind pressure or repeated operational stress.
Yes. The cured foam's high-density, closed-cell structure acts as an effective acoustic barrier. It significantly reduces the transmission of airborne noise — including traffic noise, urban sounds, and voices — through gaps around window and door frames, contributing to a noticeably quieter and more comfortable indoor environment.
This foam sealant adheres tenaciously to a wide range of common construction materials, including concrete, brick, wood, PVC, and various metals. Its strong adhesion ensures a reliable bond regardless of the substrate, making it suitable for sealing gaps around virtually any type of door or window frame installation.
Absolutely. By completely filling irregular cavities and gaps around window and door frames, it creates a continuous airtight and weatherproof barrier. This blocks drafts and moisture infiltration, significantly improving the building's overall thermal insulation performance, which in turn helps reduce heating and cooling costs over time.
Yes, this foam sealant is designed for a broad range of applications. Its combination of Class B1/B fire retardancy, high mechanical hardness, acoustic insulation, and airtight/watertight sealing properties makes it an ideal solution for both residential buildings and commercial or industrial construction projects where passive fire protection and building performance are critical requirements.
