Backer Rod

Backer rod are closed cell polymer-based foam filler material with a circular profile. It ensures stronger bonding of sealant with masonry, aluminium or other substrates & helps to maintain desired thickness of sealant at the joint’s centre. They do not bond with cold applied sealants. Backer rods are used as back-up to sealants to expansion joints and structural glazing systems. Their closed cell structure ensures negligible water/ water vapour absorption. They have excellent chemical resistance – Inert to most acids and alkalis. They are a cost effective space filler and allow unrestrained expansion and contraction of sealants without bubbling of the sealant or straining.

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