Backer Rod Bulk 1/2" (1250' Roll)

Seal gaps the right way the first time. This backer rod/glazing tape fills joints and supports sealant for clean, long-lasting seals that keep out drafts, water and energy loss.

Key Features

• Flexible closed-cell foam or butyl
• Sized for common joint widths
• Bulk rolls

Common Applications

• Caulk joints in concrete, siding and windows
• Glazing and sealing

Related Products & Sizes

• Also available in: 3/4"; 3/8"
• Caulking and sealants
• Caulking guns

Installation & Use Notes

• Choose a rod about 25% larger than the joint
• Install to proper depth before caulking