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Dock Blankets
A dock blanket, also called a dock leveler insulation blanket, is a flexible insulated panel that attaches to the inside of a loading dock overhead door. When the door is closed and no trailer is present, the blanket covers the dock leveler pit and door-perimeter gap, helping reduce cold-air infiltration and heat transfer through the leveler area during idle hours. Barron Equipment currently offers the Vestil DIB-96 Dock Leveler Insulation Blanket, designed for most standard dock-door configurations.
Unlike dock seals and shelters that work when a trailer is present, dock blankets provide insulation value during the hours when the dock is sitting idle.
How a Dock Blanket Works
The Vestil DIB-96 mounts to the inside face of the overhead dock door using an aluminum extrusion, anchors, and hangers.
When the Dock Is Idle
When the overhead door is closed and no trailer is positioned at the dock, the blanket is lowered into place, covering the dock leveler pit and surrounding gap areas. This helps reduce air movement through one of the most common energy-loss locations in a loading dock.
When a Trailer Arrives
Before loading begins, the blanket is raised and secured in its stored position above the opening. This keeps the loading path clear and prevents interference with trailer operations.
Vestil DIB-96 Specifications
| Specification | Detail |
|---|---|
| Model | DIB-96 |
| Size | 90″ W × 96″ L × 1″ H |
| Material | Cotton and Polyester |
| Net Weight | 17 lbs |
| Mounting | Aluminum extrusion, anchors, and hangers included |
| Water Resistance | Water and mildew resistant |
| Warranty | 30-Day Limited Warranty |
Dock Blankets vs. Other Dock-Sealing Products
Many buyers confuse dock blankets with other loading dock sealing products.
| Product | Primary Function | When It Works |
|---|---|---|
| Dock Blanket | Insulates the dock leveler pit and door gap | Idle hours when no trailer is present |
| Dock Leveler Seal | Seals gaps around the leveler pit | Continuously |
| Dock Seal | Creates a compression seal against the trailer | During active loading |
| Dock Shelter | Creates a perimeter enclosure around the trailer | During active loading |
A dock blanket does not replace dock leveler seals. In many facilities, the two products work together. Dock leveler seals close the perimeter gaps around the pit, while the blanket adds another layer of thermal protection during idle periods.
Benefits of Dock Blankets
Dock blankets are commonly used to:
- Reduce cold-air infiltration through the dock leveler pit
- Improve energy efficiency around idle dock positions
- Help maintain more consistent temperatures
- Reduce drafts near loading docks
- Support temperature-controlled operations
- Improve worker comfort in colder environments
Rather than sealing a trailer opening, the blanket focuses on the dock leveler pit area itself.
Water Resistance and Environmental Conditions
The Vestil DIB-96 is identified as water and mildew resistant. According to manufacturer information referenced in the analysis, the outer layers resist water during normal dock use.
However, the blanket is not intended for full submersion. Water can eventually penetrate the stitching if the blanket remains submerged or exposed to unusual conditions.
Cold Storage Applications
Dock blankets are commonly evaluated for:
- Refrigerated warehouses
- Cold-storage operations
- Food distribution facilities
- Temperature-controlled environments
By helping reduce air movement through the dock leveler pit during idle periods, they may help reduce the heating or refrigeration load associated with those openings.
Looking for Under-Leveler Insulation?
Some facilities evaluate insulation systems mounted beneath the dock leveler deck rather than a blanket mounted to the overhead door.
These systems are designed to insulate the underside of the dock leveler continuously, while dock blankets are primarily active during idle periods. Depending on the facility and leveler design, both approaches may be worth evaluating.
Frequently Asked Questions
What is a dock blanket?
A dock blanket is an insulated fabric panel that covers the dock leveler pit and door gap when the dock is idle, helping reduce air infiltration and heat transfer.
How does a dock blanket work?
The blanket is lowered over the dock leveler pit when the door is closed and raised into a stored position when the dock is actively used.
Does a dock blanket replace a dock seal or dock shelter?
No. Dock blankets insulate the leveler pit during idle hours, while dock seals and shelters seal the trailer opening during active loading.
Does a dock blanket replace dock leveler seals?
No. Dock leveler seals close perimeter gaps around the pit continuously, while dock blankets provide additional insulation during idle periods. The products are complementary.
Is the Vestil DIB-96 waterproof?
No. The product is water resistant and mildew resistant, but manufacturer information indicates it is not intended for submersion.
Does the Vestil DIB-96 have a published R-value?
The analysis did not identify a published R-value from the manufacturer.
Dock Blanket Selection & Installation
Barron Equipment helps warehouses, manufacturers, cold-storage facilities, and distribution centers evaluate dock blankets based on dock layout, environmental conditions, and energy-efficiency goals.
Request a quote online to determine whether the Vestil DIB-96 is the right dock-insulation solution for your facility.