Backer Rod Closed Cell

Closed Cell Backer Rod - LDPE Foam Sealant Backing (50m Rolls) The Closed-Cell Backer Rod is a round, compressible foam rod made from durable closed-cell low-density polyethylene (LDPE). Its non-absorbent structure prevents moisture ingress, making it ideal for use in both horizontal and vertical joints. Common applications include sealing expansion joints, internal wall joints, window perimeters, and draft proofing. This high-quality backing material supports the correct sealant profile and depth, helping to ensure long-lasting and efficient joint performance. Available Sizes (Diameter x Roll Length): 10mm x 50 metres 15mm x 50 metres 20mm x 50 metres Additional sizes, ranging from 6mm to 60mm, are available upon request. Key Features: Moisture-resistant closed-cell foam Suitable for internal and external use Helps control sealant depth and prevents three-sided adhesion Easy to install and compatible with most common sealants Manufactured from high-grade LDPE for consistent performance