The Sika Everbuild Grey Joint Backer Rod is a versatile and efficient solution designed to optimize the performance of sealants in various applications. Crafted from 10mm round polyethylene foam, this joint filler is ideal for controlling sealant depth and creating a reliable backstop, ensuring accurate tooling and effective sealing.

Its compressibility allows it to fit a wide range of joint widths, while its non-stick, closed-cell skin ensures it doesn't adhere to sealants, preventing three-sided bonding. Highly moisture-resistant and compatible with all known sealant types, it seamlessly integrates with self-levelling sealants, expansion joints, and more. Perfect for use around door and window perimeters, metal and pre-cast panels, and even in acoustic and draft-proofing works.

• Size: 30mm diameter, 1m length
• Lightweight polyethylene foam
• General purpose sealant backing
• Suitable for expansion and irregular joints
• Use in metal, pre-cast panels, and log homes
• Ideal for doors, windows, glazing, and coping
• High moisture resistance and non-stick properties
• Prevents 3-sided bonding for proper sealant function