Authorized Metacaulk® Distributor(732) 757-4552
Strips
Metacaulk Firestop Joint Strip
1/16 in. (1.5mm) thick highly intumescent graphite-based composition for both combustible service penetrations and construction joints. Expansion ratio 1:25. Up to 4-hour fire resistance. Available in 1" to 4" widths in 82-foot rolls.

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UL-Classified SystemsComponents of tested UL firestop systems
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Authorized DistributorGenuine Metacaulk® / RectorSeal
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TDS & SDSFull technical documentation
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Same-Day ShippingOrder by 11 AM CST
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Spec & Submittal SupportCode & system help
Key features
- UL Classified systems up to 4 hours
- Highly intumescent — 1:25 expansion ratio
- Flexible, freeze-thaw capable
- VOC compliant, FBC System Compatible
- Available 1" to 4" widths, 82-foot rolls
Typical applications
- Combustible pipes (PVC
- CPVC
- XFR
- PP
- HDPE
- RNC
- ABS)
- insulated pipes
- insulated ducts
- single & bunched cables
- cable trays
- construction joints
Technical data
| VOC | <10 g/L |
|---|---|
| Color | Black |
| Density | 1,275 kg/m³ |
| Chemical Base | Graphite based on Synthetic compound |
| Smoke Index | 20 |
| Flame Spread | 0 |
| Expansion Ratio | 1:25 |
| Expansion Pressure | 1.391 N/mm² (13.91 Bar) |
Installation overview
- Clean all surfaces free from debris
- Install required backing material
- JOINTS: Friction fit Joint Strip longitudinally using backer rod as transport
- PENETRATIONS: Wrap strips around penetrant, push to required depth
- Apply recommended sealant over joint strip per system design