XPS Extruded Polystyrene Board

XPS Extruded Polystyrene Insulation Board

SHENZHOU XPS extruded polystyrene board is a rigid, closed-cell foam board developed for construction applications where thermal performance, low water absorption and compressive strength must be considered together. The series includes X150, X200, X250, X300, X350, X400, X450 and X500 grades, with published compressive strength ranging from ≥150 kPa to ≥500 kPa.

These XPS extruded polystyrene boards can be specified for wall and roof insulation, cold-storage floors, prefabricated buildings, parking platforms and selected infrastructure projects.

Why Use Closed-Cell XPS Extruded Polystyrene Board?

Low Water Absorption

The closed-cell structure limits water penetration, helping the board maintain its insulation function in roofs, cold-storage floors, foundations and other assemblies exposed to moisture. The product should be described as having low water absorption rather than zero water absorption.

Application-Specific Compressive Strength

Eight grades allow buyers to select the XPS board according to the anticipated load. This is particularly important for cold-storage floors, parking platforms, load-bearing floor assemblies and infrastructure applications.

Stable Thermal Insulation

The published thermal conductivity range of 0.027–0.034 W/(m·K) supports the use of the board in energy-efficient building envelopes. Required thickness should be calculated according to the target thermal resistance or U-value of the complete construction system.

Rigid and Lightweight Board Format

XPS rigid foam insulation board can be cut and arranged into regular installation layouts while adding less weight than many conventional insulation materials. The selected fixing method, joint treatment, waterproofing and protective layer must be compatible with the complete assembly.

XPS Compared with Other Insulation Materials

• ♦ Choose XPS when the project requires rigid insulation, low water absorption and a specified compressive-strength grade.
• ♦ Consider rock wool insulation when fire performance, high-temperature resistance or acoustic control is the primary requirement.
• ♦ Review glass wool insulation for lightweight thermal and acoustic insulation in buildings and HVAC systems.
• ♦  Use rubber foam insulation for flexible HVAC, refrigeration and pipe-insulation applications where condensation control is important.

XPS extruded polystyrene board is widely used in thermal insulation for dry walls, flat concrete roofs, steel structure roofs, as well as in moisture-proof thermal insulation for low-temperature cold storage floors, parking platforms, airport runways, highways, prefabricated buildings, and integrated insulation structures. It can effectively control the frost heave deformation of walls, roofs, and floors, and is currently the most cost-effective material of insulation, thermal insulation, and moisture-proof in the field of construction engineering.

Wall Insulation

XPS boards can be incorporated into exterior or interior wall insulation systems where a rigid insulation layer and moisture resistance are required. Buyers should confirm board thickness, fixing method, surface treatment and fire-safety detailing with the wall-system designer.

Flat Concrete and Steel Structure Roofs

For roof insulation, selection should consider thermal resistance, moisture exposure, maintenance load and the position of waterproofing layers. The XPS grade must be compatible with the complete roof construction.

Cold-Storage Floors

Cold-storage floor insulation must resist heat flow, moisture and floor loading. When requesting a recommendation, provide the operating temperature, floor load, required insulation thickness, floor construction and vapor-control design.

Parking Platforms and Load-Bearing Floors

Higher-compressive-strength XPS boards can be considered for floor assemblies subject to heavier loads. Selection should be based on engineering calculations and long-term loading requirements rather than density alone.

Prefabricated Buildings

The rigid and lightweight board format can be coordinated with modular wall, roof and floor layouts. Board dimensions, joints, fixing details and protective layers should be confirmed during system design.

Highways, Runways and Frost-Control Projects

In selected infrastructure assemblies, XPS insulation may help reduce the effect of frost-related ground movement and temperature variation. These applications require project-specific verification of compressive strength, water absorption, board dimensions and long-term load performance.

You can review examples of SHENZHOU products used in different projects through our insulation project cases.

Frequently Asked Questions

What do X150 and X500 mean?

The model designation corresponds to the published minimum compressive-strength grade. X150 has a listed minimum compressive strength of ≥150 kPa, while X500 has a listed minimum of ≥500 kPa.

How should I choose the thickness of an XPS board?

Thickness should be determined by the target thermal resistance or U-value, local building regulations and the complete wall, roof or floor assembly. Thickness should not be selected from compressive strength alone.

Can this XPS board be used for cold-storage floors?

Yes, it can be considered for cold-storage floor insulation. The operating temperature, floor load, vapor-control design, board thickness and compressive strength must be confirmed before selection.

Is the XPS board waterproof?

XPS has a closed-cell structure and low water absorption, but it should not be described as an independent waterproofing layer. The complete construction system still requires suitable joint treatment, drainage and waterproofing design.

Does the B1 rating meet my local building code?

Fire classifications depend on the referenced test method and local regulations. Please provide the required standard so SHENZHOU can confirm the applicable test documents. Approval should be based on the complete building assembly rather than the insulation board alone.

What information is required for a bulk quotation?

Please provide the model or required compressive strength, thickness, board dimensions, quantity, application, fire standard, packaging requirements and delivery destination.

Request an XPS Board Quotation

Send SHENZHOU your project application, required thickness, board size, compressive-strength grade, quantity, destination and documentation requirements. Our team will review the specification and provide production availability and quotation information.

Contact SHENZHOU for XPS board selection and bulk pricing.