How to quickly seal cable trays

Use pre-fabricated sealing systems like Roxtec modules or GRP sealants for fast, reliable cable tray sealing.

Pre-

Fabricated Sealing Modules

Roxtec cable entry seals are highly effective for quick installation. These modules have removable layers that can be peeled off to fit cables of different sizes, allowing multiple cables to pass through a single opening without drilling new holes. They can accommodate pre-terminated cables, reducing the need for cutting or re-attaching connectors onsite, and provide protection against dust, fire, vibration, and EMI, making them ideal for rapid, secure sealing in cabinets or tray penetrations.

GRP Weathering Systems

For outdoor or building penetrations, GRP (glass-reinforced plastic) sealants offer a fast and versatile solution. These cold-applied, fiber-reinforced liquids can be applied directly around cable trays entering walls or roofs, creating a waterproof, windproof, and structurally sound seal.

GR

P systems can be adjusted to fit any penetration size or shape and can be tinted to match building aesthetics, providing both speed and reliability.

Fire-

Rated Penetration Seals

When fire safety is a concern, use fire-rated penetration sealing materials. These can be applied quickly around tray openings in walls or floors to maintain fire containment while allowing for rapid installation. Ensure the sealant is compatible with the tray material and does not compromise mechanical strength.

Fast Joint Connections

While primarily for tray assembly, Hermi® Fast Joint systems can speed up the installation of cable trays themselves, indirectly reducing the time needed to seal connections. These tool-free joints allow trays to be connected securely in under a minute, which simplifies subsequent sealing operations.

Practical Tips

Plan tray entry points to minimize the number of penetrations. Use modular or adjustable seals to accommodate future cable additions. Ensure proper surface preparation for adhesives or sealants to maximize adhesion and longevity.

Combine sealing with fireproofing if required, using compatible materials. By combining pre-fabricated modules, GRP sealants, and fire-rated materials, you can achieve a quick, reliable, and compliant seal for cable trays in both indoor and outdoor environments.