ZWALUW DEN BRAVEN 210150 closed-cell PE foam backfilling grey 150 m x 20 mm - 30880235

Name: ZWALUW DEN BRAVEN 210150 closed-cell PE foam backfilling grey 150 m x 20 mm - 30880235
Brand: ZWALUW
SKU: 08076884
Price: 43.6 EUR
Availability: PreOrder

Supplier number: ZWALUW 30880235 | EAN 8711595072816

43.60 tax incl.

€36.03 excl. VAT (incl. all environmental contributions)

On order: delivered from 09/10/2026

roll

Delivery by DHL

✆ Talk to a specialist

Optimal joint depth backing

Practical benefits

Prevents three-point adhesion: You prevent sealants from bonding to the joint base, ensuring maximum movement flexibility and preventing cracks.
Closed-cell PE foam: The water-resistant material absorbs virtually no moisture, giving you dependable protection in exterior and interior expansion joints.
Continuous roll format: With a continuous 150 m length, you seal long joint runs quickly without unnecessary cuts or joints.

In a nutshell

The right choise for

With the Zwaluw 210150 pe foam backer rod, you ensure the correct joint depth and reliably prevent three-point adhesion in all your sealing jobs. Because sealants do not bond to closed-cell polyethylene, elastomeric joints in facades, floors, and frames can expand and contract freely without cracking. The water-resistant material absorbs virtually no moisture, offering dependable protection in both interior and exterior applications. With a generous 150 m continuous roll and a 20 mm diameter, you can back long expansion joints quickly without unnecessary cuts, reducing sealant consumption and achieving a clean, professional finish.

Product information FAQ

€43.60

tax incl.

Key features according to our expert

Width: 20 mm
Roll length: 150 m
Material: PE
Thickness: 20 mm

Product description:

Back padding made of PE foam for achieving the correct joint depth-to-width ratio

Advantages:

Backfilling for joints between building materials
Available in various diameters, from Ø 6 to 50 mm
Prevents three-point sealant adhesion
Water-resistant
Applicable in places with high water and/or mechanical loads

Areas of application:

Zwaluw Backfill should be used in construction and expansion joints to achieve correct joint dimensions and prevent three-point adhesion of the sealant.
Ensure that the width of the joint is in accordance with the movement capacity of used Zwaluw sealant. How to calculate a correct joint dimension can be read on our website or by contacting us for correct advice.
Joint depth can be calculated using the following formula: Joint depth = (Joint width, divided by 3) + 6.
Make sure that the diameter of the PU Zwaluw Backfill is 50% larger than the width of the joint between the two substrates. If the joint is 20 mm, the diameter of the Zwaluw Backfill should be Ø30 mm. For PE Zwaluw Backfill, the diameter should be 25% larger than the width of the joint.

All Features

Width: 20 mm
Roll length: 150 m
Material: PE
Thickness: 20 mm
Colour: Grey
Length: 150 m
Diameter: 20 mm
Packaging: Role

Brand ZWALUW
08076884
EAN 8711595072816
Supplier number ZWALUW 30880235

Frequently asked questions about this product

Answered by specialists

What is this backing rod used for?: You use this PE backer rod in construction and expansion joints to set the correct joint depth and prevent three-sided sealant adhesion.
What are the dimensions of this roll?: The backer rod has a diameter of 20 mm and comes on a roll with a total length of 150 m.
Is this material water-resistant?: Yes, thanks to the closed-cell polyethylene structure, it does not absorb water and is suitable for wet or demanding applications.
What joint width is this 20 mm rod suitable for?: As PE backer rods should be 25% wider than the joint, a 20 mm diameter is suitable for joints between 15 and 16 mm wide.
Does sealant adhere to this backer rod?: No, sealants do not bond to polyethylene, allowing the sealant to expand and contract properly without tearing.