Fireproof sealing for cable trays typically ranges from $20 to $150 per unit depending on type, fire rating, and size.

Types of Fireproof Sealants

1. Intumescent Firestop Pillows
   • Examples: AF BAGS, 3M Fire Barrier Moldable Putty+
   • Fire ratings: EI 120 to EI 240 (EN 1366-3)
   • Features: Repositionable, suitable for cable diameters up to 21 mm, easy installation in walls, floors, and sandwich panels
   • Typical cost: $20–$80 per pillow depending on size and certification
2. Firestop Caulks and Putty
   • Examples: IC 15WB Caulk, 3M moldable putty sticks
   • Fire ratings: 1–3 hours F-rating, 0–3/4 hour T-rating
   • Features: Applied with caulking gun, adheres to most surfaces, halogen-free, intumescent properties to block heat penetration
   • Typical cost: $30–$60 per tube (300–600 mL), coverage depends on tray size and wall thickness
3. Firestop Sheets and Wraps
   • Used for larger cable trays or multiple penetrations
   • Features: Flexible, can be combined with caulks or pillows for complete sealing
   • Typical cost: $50–$150 per sheet depending on material and thickness

Factors Affecting Price

• Fire Rating: Higher ratings (e.g., 4-hour vs 2-hour) increase cost
• Material Type: Silicone, acrylic, or foam-based sealants vary in price
• Tray Size and Number of Penetrations: Larger trays require more material or multiple pillows
• Installation Method: Pre-formed pillows are faster to install but may cost more per unit; caulks require labor time
• Certifications: UL, EN 1366-3, or ETA markings can affect pricing
• Supplier and Lead Time: Custom orders or fast delivery may increase cost

Estimating Total Project Cost

1. Measure cable tray dimensions and penetration size
2. Determine required fire rating and select appropriate product type
3. Calculate number of pillows, tubes, or sheets needed
4. Multiply unit cost by quantity and add labor/installation costs For example, sealing a medium-sized 4” x 12” tray through a 7” x 15” wall opening may require 2–4 intumescent pillows ($40–$160 total) or 1–2 tubes of firestop caulk ($30–$120 total) depending on wall thickness and fire rating . By considering these factors, you can select a fireproof sealing solution that balances safety compliance, ease of installation, and budget.