The Warehouse Sandwich Panel combines an expanded polystyrene (EPS) foam core with structural aluminum or steel skins for industrial warehouse construction. The snap-lock design enables quick interlocking installation across roofs, walls, and floors while creating continuous insulated barriers that minimize thermal bridging and reduce heating and cooling costs by up to 58%.
Available in 12-inch, 16-inch, 2-foot, or 4-foot widths with customizable lengths from 3 to 48 feet, panels feature thickness options of 3, 4, or 6 inches supporting clear spans up to 22 feet under specified loads. Steel skins come in 24 or 26 gauge prepainted or bare galvalume, while aluminum options include .024 or .032 inch thicknesses with EPS foam densities of 1.5 pounds per cubic foot.
The concealed fastener system provides wind uplift resistance and structural stability against hurricane and earthquake forces. Standard colors include white, eggshell, wheat, and dark bronze with optional stucco or cedar embossed finishes backed by 40-year warranties against peeling and 15-year structural integrity coverage when properly installed over solid substrates with minimum 3:12 roof pitch.
Warehouse Sandwich Panels: Efficient Supplier for Cost-Effective Solutions
RaxPanel is a pioneer of insulated metal panels and a leader in the advancement of insulated panel technology, with over 20 years of experience since our founding in 2002. Based in Hebei, China, we specialize as a direct manufacturer of custom composite panel solutions, serving clients in more than 30 countries worldwide.
Our Warehouse Sandwich Panels exemplify this expertise by combining framing, insulation, and sheathing into a single, high-performance unit, promising exceptionally short construction times and significant cost savings for warehouse projects. These panels are engineered to meet or exceed ASTM standards and are backed by long-term warranties, including a 40-year finish warranty, ensuring durability and peace of mind.
At RaxPanel, we conduct business under the golden rule, prioritizing ethics, morals, and treating every customer as a partner. With in-house R&D, design, and production capabilities, we achieve a daily output of 1500+ square meters, operating as a one-stop shop for manufacturing and supply only—we do not provide installation services. For detailed product specifications or assistance with your supply needs, please contact RaxPanel.
| Parameter | Specification |
|---|---|
| Product Type | Warehouse Sandwich Panel |
| Core Material | Expanded Polystyrene (EPS) Foam |
| Core Density | 1.5 pounds per cubic foot (pcf) |
| Skin Materials | Aluminum or Steel |
| Aluminum Skin Thickness | 0.024 inch or 0.032 inch |
| Steel Skin Gauge | 24 gauge or 26 gauge |
| Panel Width | 12 inches, 16 inches, 24 inches (2 feet), 48 inches (4 feet) |
| Panel Length | 3 feet to 48 feet (customizable) |
| Panel Thickness | 3 inches, 4 inches, 6 inches |
| Standard Colors | White, Eggshell, Wheat, Dark Bronze |
| Finish Options | Stucco, Cedar Embossing |
| Fastener System | Concealed snap-lock design |
| Minimum Roof Pitch | 3:12 |
| Maximum Clear Span | Up to 22 feet (varies based on load rating) |
| Warranty – Finish | 40 years against peeling |
| Warranty – Structural | 15 years |
| Compliance Standards | ASTM, CSA, CSSBI |
| Optional Features | Integrated gutter systems, skylights, fan beams for concealed wiring |
Related Products
Insulated Metal Panel (IMP) & Warehouse Envelope Guide
Insulated metal sandwich panels (IMPs) represent the single-source solution for high-bay logistics warehouses, distribution centers, industrial manufacturing plants, and commercial building envelopes. Factory-assembled with high-R polyisocyanurate (PIR) foam ($\lambda pprox 0.020$ W/m·K) encapsulated between pre-painted steel facings, IMPs integrate continuous air, water, vapor, and thermal control barriers into a single modular installation step.
💡 Pro Tip: Rapid Building “Dry-In” & ASHRAE 90.1 Compliance
At RaxPanel, our industrial warehouse panels achieve continuous thermal insulation tested under ASTM C518 (R-7.2 to R-8.0 per inch). Installing large-format IMPs slashes weather-tight building dry-in schedules by up to 50% compared to tilt-up concrete or multi-component cavity walls.
At RaxPanel, our industrial warehouse panels achieve continuous thermal insulation tested under ASTM C518 (R-7.2 to R-8.0 per inch). Installing large-format IMPs slashes weather-tight building dry-in schedules by up to 50% compared to tilt-up concrete or multi-component cavity walls.
1. Why Are IMPs Preferred Over Tilt-Up Concrete and Built-Up Cavity Walls?
Concrete tilt-up panels are heavy, thermally conductive, and require long curing times. RaxPanel IMPs provide superior thermal resistance per millimeter of thickness, lightweight structural purlin attachment, and immediate weather-tight building enclosure.
2. What Thermal and Air Infiltration Standards Define Industrial IMPs?
Engineered to comply with stringent ASHRAE 90.1 and IECC energy conservation building codes:
3. Seamless Integration of Air, Vapor, and Water Control Barriers
Traditional walls require separate vapor retarders, air barrier wraps, and insulation batts. IMPs unify all four building envelope control layers into a single continuous panel assembly.
4. Concealed Fasteners & Architectural Wall Micro-Rib Profiles
🏭 Industrial Architectural Aesthetics:
- Concealed Fixing Clips: Screws anchor the male tongue flange prior to interlocking the adjacent female panel seam, hiding fasteners.
- Micro-Rib & Embossed Finishes: Micro-ribbing adds flexural rigidity to panel skins while eliminating surface oil-canning.
5. Where Are Insulated Metal Panels Most Commonly Installed?
📦 E-Commerce Fulfillment & Logistics Hubs
Large-scale high-bay warehouses requiring rapid dry-in timelines and low operational energy costs.
⚙️ Manufacturing Plants & Industrial Enclosures
Durable exterior wall cladding and roof envelopes resisting industrial pollutants.
6. On-Site Crane Lifting and Fast Vacuum Rig Installation
IMPs are lifted using vacuum suction cup rigs, allowing a small installation crew to erect over 500 to 1,000 square meters of wall facade per day.
Frequently Asked Questions (FAQS)
1. What is an Insulated Metal Panel (IMP) and how does it function?
An IMP is a factory-engineered sandwich panel featuring an insulating foam core (PIR/PUR) bonded between two structural metal skins, integrating air, water, vapor, and thermal barriers.
2. What thermal R-value per inch do RaxPanel IMPs achieve?
RaxPanel PIR core IMPs deliver approximately R-7.2 to R-8.0 per inch of core thickness when tested according to ASTM C518 standards.
3. How do IMPs reduce warehouse construction schedules?
Single-step panel erection eliminates separate insulation batts, building wraps, and drywall, achieving building dry-in up to 50% faster.
4. Are RaxPanel warehouse IMPs FM Approved for fire safety?
Yes. Our PIR core formulations meet FM 4880 Class 1 fire resistance standards and EN 13501-1 Class B-s1,d0 requirements.
5. What panel thicknesses are specified for industrial warehouse walls?
Standard wall thicknesses are 50mm, 75mm, 100mm, and 120mm depending on local energy conservation code requirements (ASHRAE 90.1).
6. How are panel joints sealed against air and water leakage?
Joints incorporate interlocking tongue-and-groove profiles with factory-applied non-skinning butyl sealants, passing ASTM E283 air and ASTM E331 water tests.
7. What maximum panel lengths can be produced for high-bay warehouse walls?
Panel lengths up to 11.8 meters are standard for containerized transport, allowing full-height single-panel wall spans without horizontal intermediate joints.