XPS board features a perfect closed-cell honeycomb structure, with a closed-cell rate exceeding 99%. This unique structure forms an effective vacuum layer that prevents air convection and heat dissipation. Its thermal conductivity is extremely low (typically between 0.020 and 0.034 W/(m·K)), which is far superior to many traditional insulation materials. For instance, a 20mm thick XPS board can provide insulation equivalent to 50mm of EPS foam or 120mm of cement perlite, making it an excellent choice for energy-saving buildings.

Thanks to its special structural formulation, XPS board boasts extremely high compressive strength and impact resistance. Depending on the specific model and thickness, its compressive strength can range from 150 KPa to over 700 KPa. This allows it to withstand heavy loads from various ground systems, making it highly suitable for demanding applications such as underfloor heating, highways, airport runways, large cold storage facilities, and plaza flooring.

Water absorption is a critical parameter for insulation materials. The stable molecular structure and complete closed-cell design of XPS board make it virtually non-absorbent (with a water absorption rate often below 1% to 2%). This effectively solves common issues like water leakage, seepage, frosting, and condensation. Even in humid environments or after freeze-thaw cycles, it maintains its structural integrity and insulation performance without degradation.

The combination of a fully closed-cell chemical foaming structure and a honeycomb physical structure gives XPS board the characteristics of being both lightweight and high-strength. It is highly convenient to cut, transport, and install. Workers can easily process it on-site to fit specific dimensions, and it is not prone to breakage or damage during handling, which significantly improves construction efficiency.

XPS board exhibits excellent chemical stability. During long-term use, it does not age, decompose, produce harmful substances, or suffer from mildew. Even in environments with high water vapor pressure, it maintains its performance. Studies and practical applications indicate that high-quality XPS boards can retain their excellent properties for 30 to 60 years without decomposition or the release of toxic substances.

Q1: Why is XPS foam board excellent for thermal insulation?

A: It features a closed-cell structure with low thermal conductivity (0.028–0.034 W/m·K), forming a continuous thermal barrier. This effectively reduces heat transfer, lowers energy consumption for heating and cooling, and maintains stable indoor temperatures in all seasons.

Q2: What are the customizable specifications of this XPS foam board?

A: The standard length is 1200mm, width 600mm, with thickness ranging from 20–100mm (all customizable). Its density is adjustable from 25–45 kg/m³, and it also supports options for flame-retardant grades and surface treatments to meet different project needs.

Q3: What fire safety standard does the XPS foam board comply with?

A: Our XPS foam board is available with flame-retardant grades meeting Euroclass E or Class B1 standards. It will self-extinguish and not spread flames, suitable for most general building applications.