PIR Sandwich Panels: FM-Approved Fire Safety & Superior Thermal Performance
PIR (Polyisocyanurate) sandwich panels represent an advanced chemical evolution of polyurethane. Upon flame exposure, the isocyanurate ring structure decomposes into a self-protecting char layer that isolates the core and suppresses smoke generation. Certified B-s1, d0 and compliant with FM Global standards, PIR is the premier choice for insurance-critical industrial infrastructure.
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Key Engineering & Commercial Benefits
FM Global Certified Fire Safety
Reduces property insurance premiums by up to 50% across internationally underwritten industrial facilities.
B-s1, d0 Fire Rating & Low Smoke
Zero flaming droplets (d0) with lowest smoke emission (s1), ensuring clear visibility for building evacuation.
λ = 0.022 W/mK Peak Efficiency
Combines industry-maximum thermal efficiency with advanced fire resistance in a single building envelope.
Thermal Shock Stability (-40°C to +100°C)
Maintains dimensional integrity across extreme temperatures without core shrinkage or delamination.
Available Systems & Models
Select the optimal profile and core configuration for your building envelope requirements.
PIR foam offers enhanced cross-linked molecular bonds that char upon exposure to heat, suppressing flame spread while maintaining peak thermal insulation. Flame-retardant PIR core paired with high-moment 5-rib crown geometry makes it the premier insurance-approved choice for rooftop solar PV installations.
Engineered with an isocyanurate chemical ring structure that chars on flame contact without dripping, PIR wall panels satisfy stringent building code and industrial insurance (FM Global) requirements.
Concealed-fix panels hide all fasteners within the joint tongue, creating clean architectural shadow lines, uniform facades and preventing water ingress at screw points.
Combines structural steel, high-efficiency insulation and durable waterproofing membrane in one prefabricated product, eliminating on-site layer-by-layer assembly.
Designed specifically for -40°C blast freezing tunnels and commercial sub-zero preservation, these panels incorporate an extended double-stepped labyrinth edge profile combined with heavy-duty internal eccentric cam-locks, preventing thermal leakage under extreme temperature differentials.
Engineered with factory-embedded eccentric cam-locks or precision double labyrinth joints to ensure airtight seals, eliminating energy losses in cold rooms from +4°C down to -40°C.
Insulation Core & Performance Comparison
Compare lambda thermal conductivities, fire ratings, densities and ideal project usages.
| Model & System | Application | Fire Rating | Density | Thermal Cond. (λ) | Key Advantage |
|---|---|---|---|---|---|
| SP-ROOF-PIR (Çatı Paneli) | Sigortalı Sanayi Çatısı | B-s1, d0 (FM) | 40 – 42 kg/m³ | 0.022 W/mK | FM Global approved roof envelope with minimal smoke and char barrier |
| SP-WALL-PIR (Dış Cephe) | Yüksek Güvenlikli Fabrika | B-s1, d0 (FM) | 40 – 42 kg/m³ | 0.022 W/mK | Fire containment for data centers, logistics hubs and chemical plants |
| SP-WALL-CONC (Gizli Vidalı) | Mimari Prestij Cephe | B-s1, d0 (FM) | 40 – 42 kg/m³ | 0.022 W/mK | Secret-fix architectural facade with high fire safety ratings |
| SP-ROOF-MEMB (Teras Çatı) | Düşük Eğimli Teras Çatı | B-s2, d0 | 40 kg/m³ | 0.022 W/mK | Low-slope flat roofs with factory-welded PVC/TPO waterproofing |
| PIR vs PUR vs Taşyünü | Yangın Sigortası Analizi | B-s1, d0 Yangın Tepkisi | 40-42 kg/m³ | 0.022 W/mK | Benchmark for insured facilities seeking foam insulation with fire safety |
Thickness, U-Value, Weight & Logistics Matrix
Verify thermal resistance (R), permissible purlin spans and truckload volume per thickness.
| Thickness | Fire Class | Transmittance (U) | Dead Weight | Rec. Purlin Span | Truckload Capacity |
|---|---|---|---|---|---|
| 40 mm | B-s1, d0 (FM) | 0.55 W/m²K | 10.20 kg/m² | 2.00 metre | ≈ 1.350 m² / Tır |
| 50 mm | B-s1, d0 (FM) | 0.44 W/m²K | 10.60 kg/m² | 2.20 metre | ≈ 1.150 m² / Tır |
| 60 mm | B-s1, d0 (FM) | 0.37 W/m²K | 11.00 kg/m² | 2.50 metre | ≈ 1.000 m² / Tır |
| 80 mm | B-s1, d0 (FM) | 0.27 W/m²K | 11.80 kg/m² | 2.80 metre | ≈ 800 m² / Tır |
| 100 mm | B-s1, d0 (FM) | 0.22 W/m²K | 12.60 kg/m² | 3.20 metre | ≈ 650 m² / Tır |
| 120 mm | B-s1, d0 (FM) | 0.18 W/m²K | 13.50 kg/m² | 3.50 metre | ≈ 540 m² / Tır |
Critical Engineering Guidelines for System Selection
Standards for purlin spacing, live loads, fire containment and joint detailing.
1. B-s1, d0 Fire Rating & 's1' Critical Smoke Safety
PIR prevents flame propagation with zero flaming droplets (d0). Its 's1' lowest smoke rating keeps evacuation routes visible, critically reducing toxic inhalation risks.
2. FM Global (FM 4880/4881) Standards & Insurance Savings
FM Global-certified PIR panels allow facility owners to secure up to 50% lower property insurance premiums, creating compounding operational savings.
3. Isocyanurate Molecular Rings & Self-Protecting Char Layer
Under high heat, PIR forms a carbonized protective char layer that deprives the core of oxygen, preventing deeper thermal penetration.
4. High-Temperature Stability (+100°C) & Thermal Shock Rigidity
Withstanding temperatures up to 100°C continuously, PIR panels prevent delamination and buckling under dark-colored steel sheets exposed to harsh sunlight.
5. Specification in Data Centers & High-Bay Logistics Hubs
Demanding zero downtime and strict insurance underwriting, modern data centers and automated warehouses prioritize PIR panels for their envelope integrity.
6. Joint Detailing & Intumescent Sealant Application
Airtight tongue-and-groove jointing supplemented by intumescent fire mastics prevents smoke bypass, maintaining the integrity of the fire barrier.
Matching Flashings, Screws & Trims Package
Coordinated single-delivery guarantee: Color-matched flashings, EPDM fasteners, and covings.
PIR-Compatible Intumescent Mastic
Thermally reactive fire-stopping sealant halting smoke and flame migration.
Fasteners with EPDM Saddles
High-torque weather-sealed screws for crest mounting on structural purlins.
Fire Barrier Eave & Ridge Flashings
Maintains B-s1, d0 fire separation integrity along ridges and perimeter edges.
Corner Angle & Base Drip Trims
Airtight trim flashings sealing wall corner joints against wind-driven rain.
Airtight Butyl Joint Tapes
High-tack butyl sealing tape guaranteeing zero air and moisture infiltration.
5-Rib Corrugated Foam Closures
Die-cut profile closures sealing eaves and ridges against birds and dust.
Panel Quantity & Logistics Calculator
Roof & Wall Sandwich Panel Quantity & Logistics Calculator
Define your building dimensions and scope (Roof, Wall or Complete Envelope) to estimate net surface area, tonnage, logistics and budget.
Frequently Asked Technical Questions
Detailed engineering answers on pricing, fire codes, installation spans and delivery.
What is the key difference between PIR and PUR panels?
What benefits does FM Global approval provide for factories?
How does PIR foam behave during a fire?
What thickness should be specified for PIR roof and wall panels?
Are PIR roof panels compatible with rooftop solar installations?
How many square meters of PIR panels fit in a truckload?
What purlin spacing can be achieved with PIR roof panels?
What steel facing gauges are available for PIR panels?
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