Bridging the Gap in Passive House Construction: Introducing Our High-Strength Graphite Insulation Sub-frames

In the pursuit of net-zero energy buildings and Passive House standards, every detail of the building envelope matters. One of the most common failures in insulation strategy occurs at the window-to-wall junction—the notorious "Thermal Bridge." To address this, Hebei Woqin is officially launching our latest engineering marvel: the High-Density Graphite Insulation Sub-frame.

Why Strength Matters in Insulation While most insulation materials focus solely on thermal resistance, window sub-frames must also provide structural integrity. Our new graphite sub-frames have been tested to withstand a massive 2090 kPa of pressure at 10% deformation. With a screw-holding force of 2130 N, these frames provide a rock-solid foundation for heavy triple-glazed windows, ensuring that airtightness is maintained for the life of the building.

The Graphite Advantage By infusing high-purity graphite into our EPS structure, we’ve achieved a material that is not only stronger but also thermally superior. With a density of 164.8 kg/m³, this product offers a specialized "thermal break" that traditional aluminum or timber frames simply cannot match. It prevents condensation, inhibits mold growth, and significantly lowers the U-value of the entire window installation.

Integrating the Total Solution At Hebei Woqin, we believe in a holistic approach to insulation. This new sub-frame perfectly complements our existing range of Silica Aerogel Blankets and Vacuum Insulation Panels (VIPs). Whether you are working on a high-end residential villa in San Francisco or a large-scale commercial retrofit, our graphite sub-frames provide the structural-thermal bridge you’ve been looking for.

"We aren't just selling materials; we are providing the components for a carbon-neutral future," says the technical team at Hebei Woqin.