Closed Cell Backer Rod
Versatile Backer Rods
Closed Cell Backer Rod is a compressible polyolefin foam backer rod designed for use behind cold applied sealants in expansion joints, construction joints and building seal applications. It provides a firm backing for sealants and helps control sealant depth while allowing the sealant joint to perform effectively.
Featuring a closed cell structure and outer skin, the backer rod offers excellent dimensional stability, resistance to most chemicals and does not adhere to sealants. It is lightweight, flexible, rot proof and available in a range of diameters to suit different joint sizes and applications.
- Closed cell structure
- Excellent dimensional stability
- Resistant to most chemicals
- Non-toxic and odourless
- No adhesion to sealants
- Rot proof
- Excellent aging characteristics
Backer Rod FAQs
Find answers to common questions about backer rod, including what it is used for, choosing the right size and using closed cell backer rod in sealant and construction joints.
Backer rod is used inside joints before sealant is applied. It helps control sealant depth, supports the correct joint profile and prevents three sided adhesion, allowing the sealant to move more effectively.
Backer rod should generally be slightly larger than the width of the joint so it fits securely and remains in position during sealant application. Always follow the sealant and backer rod manufacturer’s installation recommendations for the specific application.
Closed cell backer rod is a flexible foam material with a closed cell structure that provides backing and depth control for sealants. It is commonly used in construction, expansion and movement joints.
Closed cell backer rod is designed for use behind cold applied sealants in expansion joints, construction joints and other building seal applications. It provides backing within the joint and helps control the depth of the applied sealant.