Product
Concrete Expansion Joint Filler Strip
Specifications:
Material:PE / EPE / XPE Foam
Cell Structure:Closed Cell
Density:25kg/m3
Size: 10mm*75mm*25m/10mm*100mm*25m/Customized
Operating Temperature: -40°C to +80°C
Water Resistance: Excellent
Customization: Density, thickness, width and length
Thermal Conductivity: ≤0.050 W/m·K
Product Details
Applications
Expansion Joint Foam is a flexible, lightweight closed-cell polyethylene foam engineered specifically as a high-performance joint filler and sealant backing in modern concrete construction. It effectively fills expansion, contraction, and isolation joints, allowing concrete slabs and structures to safely expand and contract with severe temperature fluctuations while preventing structural cracks and reducing internal stress.
Built with advanced chemical cross-linking, our XPE/IXPE foam features an ultra-dense closed-cell structure that completely resists moisture penetration, harsh chemicals, and UV weathering. Because polyethylene products are utilized across diverse and demanding applications—including the automotive and healthcare sectors where reliability is paramount—our production adheres to rigorous quality standards to guarantee absolute consistency and performance.
Main Applications: Concrete slabs, brick and blockwork joints, isolation and hinge joints, retaining walls, footpaths, highways, airports, bridges, automotive components, and medical equipment insulation.
![]()
Key Features
Closed-cell polyethylene – non-absorbent, moisture-proof, and weather-resistant
Compresses easily with good recovery – accommodates concrete movement
Lightweight and flexible – easy to cut and shape on site
Chemical and UV resistant – suitable for interior and exterior use
Compatible with most sealants – works with liquid and paste-type sealants, silicones, and grouts
Self-adhesive option available – for quick installation on vertical or overhead surfaces
Non-toxic and CFC/HCFC-free – environmentally safe
![]()
Packaging, Storage & Logistics
Secure Export Packaging: Packed in reinforced woven bags or protective heavy-duty plastic film layers to prevent compression damage, scratching, or moisture exposure during long-distance transit.

Contact Us
Provide your joint dimensions, project specifications, and quantity for a customized quote. Standard sizes ship immediately; custom sizes produced on request.
Inquire Now