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Expansion Joint Filler Boards

Wood fibre expansion joint filler boards for concrete elements, civil engineering, infrastructure and construction projects. Joint filler boards are sustainable alternative to conventional joint filler materials for roads, bridges, concrete structures, industrial buildings and residential developments.

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Nordic Fibreboard’s WAXboard is a preformed wood fibre expansion joint filler board for suitable concrete, civil-engineering and infrastructure applications. Installed to the designed joint dimensions, the filler creates separation between adjoining elements and accommodates movement within the complete joint system. Confirm thickness, format, performance requirements, sealant detail and current product documentation for every project.

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Joint filler – WAXboard

Durable boards designed for use in expansion joints between concrete elements.

Category description

What expansion joint filler boards do

Concrete elements move as temperature, drying shrinkage, settlement and loading conditions change. Expansion and isolation joints create planned separation so adjoining elements can move without transferring unintended stress. Preformed expansion joint filler boards occupy the designed joint space during construction and remain as a compressible separation layer within the joint detail.

WAXboard is Nordic Fibreboard’s wood-fibre-based, paraffin-impregnated joint filler board for suitable concrete and civil-engineering applications. These expansion joint filler boards can be considered for project types including roads, bridges, pavements, industrial floors, concrete elements, commercial developments and residential construction. The final application must be checked against the current product data and the project specification; the list of typical uses is not a universal approval.

The filler board is one part of the joint

An expansion joint may include a filler board together with sealant, backer material or bond breaker, primer, waterstop and edge protection. WAXboard establishes and maintains the designed joint space and accommodates movement as part of the complete joint system. It should not be treated as the exposed traffic surface or the joint’s primary watertight seal unless the approved detail specifically gives it that role.

The responsible engineer defines the joint location, width, depth and movement capacity. Secure the filler before concrete placement so it cannot float, shift or be bridged by concrete. Pay particular attention to continuity and sealant geometry at intersections and penetrations.

Why consider a wood fibre joint filler?

Wood fibre provides a low-density, workable base that can be cut into boards or strips for project requirements. Wood fibre expansion joint filler boards offer an alternative material route for buyers evaluating conventional foam or bitumen-impregnated filler products. Comparisons must be made property by property and test method by test method; different materials or market tiers are not automatically equivalent.

For contractors, easy cutting and handling can simplify positioning expansion joint filler boards around concrete details. For distributors, the product addresses a specialist B2B category with recurring demand in construction and infrastructure. For designers and procurement teams, the important questions are documented compression and recovery behaviour, water-related performance, thickness tolerance, durability, format, applicable standards and compatibility with the complete joint system.

Information to include with your enquiry

Please provide the project country and application, applicable specification or test standard, required dimensions and thicknesses, board or strip format, quantity, packaging, delivery schedule and any required approvals. If you are seeking an alternative to an existing product, attach its current technical data sheet. With this information, Nordic Fibreboard can assess product suitability and production feasibility more accurately.