This partial fill cavity board is made from rigid PIR insulation and measures 1200 x 450 x 50mm. It features tongue and groove edges for a secure fit and is designed for use in traditional masonry cavity wall construction, helping to provide continuous insulation while maintaining a clear residual cavity.
On-site, this board is typically installed in external wall cavities where a partial fill approach is required. The product is suited for new build and extension projects, supporting thermal performance requirements and assisting in reducing thermal bridging at junctions. Preformed corners help with installation continuity around wall returns.
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