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  Tremco CPG Europe provides the details that keep the world’s major developments safe, strong, sealed and secure.
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PR102 Joint Backer Rod

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PR102 is a closed cell polyethylene (PE) circular foam suitable for providing a backer to sealant joints, avoiding three-sided adhesion. PR102 is rot-proof and chemically neutral.

Usage/purpose

PR102 is used as a foam backing rod behind the sealant joint, for exterior and interior use. When positioned correctly it ensures correct joint dimensions. PR102 avoids 3-sided adhesion, allowing the joint to move more efficiently.

For joints with significant width variation along the length, TP300 Joint Backer Plus is recommended. This impregnated tape is capable of accommodating joint width tolerance, and also provides weather resistance and thermal insulation.

Safety data sheet must be read and understood before use.

Ensures correct sealant geometry
Prevents excess material usage
Avoids three-sided adhesion

PR102 Technical Data Sheet (en-GB).pdf

TDS