Closed‑cell white foam backer rod for controlling sealant depth and shape in expansion and control joints. Compressible 10mm profile supports correct joint geometry, reduces sealant consumption and improves performance. Ideal behind sealants in concrete, masonry, cladding, façades and glazing. Provides a clean bond‑breaker surface to prevent three‑sided adhesion. Easy to install and trim to length on site. Choose a backer rod diameter 25–50% larger than the joint width for best results.

$0.75

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