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Open Cell Backing Rod for waterproofing and joint sealant support – flexible foam filler for construction joints
  • Open Cell Backing Rod for waterproofing and joint sealant support – flexible foam filler for construction joints
Open Cell Backing Rod – Flexible Foam Support for Joint Sealants
$135.00 Inc. GST
Note: In-Store & Online - Fast Delivery (click for details)
Generally stocked in store, Eligible for Super-Fast delivery and available for pick up

High-performance open-cell backing rod designed for superior sealant support under waterproofing membranes. Flexible, durable, and easy to install—ensures long-lasting airtight and watertight joints in all construction environments.
Size

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Key Features

  • Flexible foam structure
  • Airtight support
  • Easy installation
  • Durable performance
  • Long-term protection
  • Perfect sealant base
  • Movement accommodation
  • Lightweight design
  • Membrane compatible
  • Professional finish

Typical Uses

  • Expansion joints
  • Door flashings
  • Balcony sealing
  • Wet areas
  • Window joints
  • Crack filling
  • Terrace waterproofing
  • Penetration sealing
  • Structural slabs
  • Construction joints

Suitable Surfaces

  • Concrete surfaces
  • Cement screed
  • Block walls
  • FC sheeting
  • Brickwork joints
  • Rendered walls
  • Compressed sheets
  • Cement substrates
  • Masonry joints
  • Structural concrete

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Product Details

OPEN CELL BACKING ROD

The Open Cell Backing Rod is a professional-grade joint filler made from flexible, high-quality foam. Specially developed for use beneath waterproofing membranes and sealants, it provides a consistent base that improves adhesion and prevents three-sided bonding.

Its open-cell structure adapts easily to irregular gaps and expansion joints, ensuring uniform depth control and reliable performance. Ideal for waterproofing decks, balconies, wet areas, and structural slabs, it enhances joint durability while minimizing sealant wastage.

Whether sealing penetrations, corners, or cracks, this backing rod is the perfect choice for builders, waterproofers, and installers seeking lasting results. Designed to perform under movement and environmental stress, it ensures professional waterproofing efficiency and airtight sealing across multiple substrates.

Product Limitations

PLEASE USE EXPERTISE - PROFESSIONAL USE