PIR Insulated Sandwich Panels for Project Grade Fire Protection, Tight Joints, and Energy Efficiency

Suitable for Cleanrooms, Cold Rooms, and Industrial Facilities

PIR Fire-Rated Insulation with Low Thermal Conductivity (Low K-Value)

Tight Joint Design Reduces Thermal Bridging and Maintains Stable Temperature

Engineering Team Support for Selecting Appropriate Thickness, Span, and Load Requirements Based on Actual Site Conditions

“

MKS PIRX Sandwich Panels: Where World-Class Precision Meets Sustainable Engineering.”

Perfection is in the details. Utilizing cutting-edge, fully automated injection machinery, MKS produces high-performance PIR Firewall Sandwich Panels that deliver unmatched flatness, structural integrity, and premium aesthetics.

Beyond exceptional thermal control, our eco-friendly panels are engineered to adapt. With customizable colors and thicknesses, MKS seamlessly serves the rigorous demands of today’s leading sectors—from food processing and cold chain logistics to pharmaceutical cleanrooms and advanced architectural interiors.

Special Features of the Product

Excellent Z-lock System Joint detail
Superior Z-LOCK joint design for enhanced structural strength

Fire Safety and Resistance Insulation
Insulation with excellent fire resistance and flame-retardant properties

Moisture-protected Closed-Cell Insulation
Closed-cell insulation that prevents moisture penetration and condensation

Complete Fiber-free Insulation
Fiber-free insulation that is safe and non-irritating to health

High Density PIR Insulation (40kg/m3, 2.5lb/ft3)
High-density PIR insulation for enhanced strength and durability

Low K-Value PIR Insulation Core PIR
Special PIR core formulation with low thermal conductivity (Low K-Value) for superior insulation performance

Effective internal and external thermal
Excellent temperature control, reducing heat transfer between indoor and outdoor environments

Product Overview

MKS PIR Firewall Sandwich Panels can be manufactured in customized lengths and thicknesses to meet specific project requirements. The selection of panel thickness should be based on the intended operating temperature, environmental conditions, and insulation performance requirements. Choosing the appropriate panel thickness helps optimize thermal efficiency, with a heat transfer rate as low as 10 W/m².

Technical Data

Certification Type : FM Approved
Approval Standard : FM 4880 Interior Used , FM 4881 Exterior Used
Application : Wall and CeilingGreen Product Type
Green Product Type : This product contains no CFC or HCFE or urea-formaldehyde.
Thermal Conductivity (K-Value) : 0.021 – 0.023 W/m.K

PANEL THICKNESS (MM)		50	75	100	125	150	200
Weight (kg/m²)	Steel 0.50/0.50 mm (BMT)	10.50	11.50	12.50	13.50	14.50	16.50
Weight (kg/m²)	Steel 0.60/0.60 mm (BMT)	11.50	12.50	13.50	14.50	15.50	17.50

* Panel weight (kg/m²) is for reference only.

Topic	Detail
Product Name	MKS PIR Firewall Sandwich Panel
Width	1,100 – 1,200 mm.
Length	Up to requirement / transport / container
Facer	SuperDyma CRP Antibacterial ZM180 (15Y) Stainless Steel AISI 304 PPGL/PPGI Color Steel
Facer Thickness	0.45 – 0.65 mm. (APT) FM Approved ≥ 0.55 mm. (APT)
Facer Color	Off white / up to requirement
Surface Type	Flat and Rib
Panel Thickness	40, 50, 75, 100, 125, 150, 200 mm.
Insulation Density	40 kg/m³ (2.5 lb/ft³)
Thermal Conductivity (K)	0.021 – 0.023 W/m.K
Operating Temperature	-100 to 100 °C
Test Method	FM Approved, BS-476, BS EN 13501-1

Wind Loading for Urban or Suburban Geography (Ref. Building Law)

Wind Loading for Open Area or Coast Geography (Ref. Building Law)

Panel Selection

Panel Thickness (mm)	Maximum Single Span (m)		Temperature Limit (°C)	R-Value (m²K/W)	U-Value (W/m²K)
Panel Thickness (mm)	Wall	Ceiling	Temperature Limit (°C)	R-Value (m²K/W)	U-Value (W/m²K)
50	5.90	3.70	18	2.38	0.46
75	7.85	4.20	8	3.57	0.31
100	9.50	5.80	-5	4.76	0.23
125	11.00	6.70	-14	5.95	0.18
150	12.50	7.60	-24	7.14	0.15
200	15.00	9.00	-30	9.52	0.12

How To Select Insulation Thickness

Goal Temp (°C)	ΔT (°C)	Panel Thickness (mm)							Optimization mm (W/m²)
Goal Temp (°C)	ΔT (°C)	40	50	75	100	125	150	200	Optimization mm (W/m²)
U (W/m².K)		0.58	0.46	0.31	0.23	0.18	0.15	0.12	K-Value:
R (m².K/W)		1.72	2.17	3.26	4.35	5.43	6.52	8.70	0.023 W/mK
25	15	8.63	6.90	4.60	3.45	2.76	2.30	1.73	40 (8.63)
20	20	11.50	9.20	6.13	4.60	3.68	3.07	2.30	50 (9.20)
15	25	14.38	11.50	7.67	5.75	4.60	3.83	2.88	75 (7.67)
10	30	17.25	13.80	9.20	6.90	5.52	4.60	3.48	75 (9.20)
5	35	20.13	16.10	10.73	8.05	6.44	5.37	4.03	100 (8.05)
0	40	23.00	18.40	12.27	9.20	7.36	6.13	4.60	100 (9.20)
-5	45	25.88	20.70	13.80	10.35	8.28	6.90	5.18	125 (8.28)
-10	50	28.75	23.00	15.33	11.50	9.20	7.67	5.75	125 (9.20)
-15	55	31.63	25.30	16.87	12.65	10.12	8.43	6.33	150 (8.43)
-20	60	34.50	27.60	18.40	13.80	11.04	9.20	6.90	150 (9.20)
-25	65	37.38	29.90	19.93	14.95	11.96	9.97	7.48	150 (9.97)
-30	70	40.25	32.20	21.47	16.10	12.88	10.73	8.05	200 (8.05)
-35	75	43.13	34.50	23.00	17.25	13.80	11.50	8.63	200 (8.63)
-40	80	46.00	36.80	24.53	18.40	14.72	12.27	9.20	200 (9.20)

🌡️ Energy Loss Classification

> 35 W/m² – Critical

25-35 W/m² – Very High

15-25 W/m² – High

10-15 W/m² – Moderate

5-10 W/m² – Low

< 5 W/m² – Excellent

🏭 Recommended Applications

Air-Conditioned Rooms (5–25°C): 50–75 mm

Chilled Rooms (0–5°C): 75–100 mm

Cold Storage Rooms (-20°C): 100–150 mm

Deep Freezer Rooms (< -20°C): 150–200 mm

MKS Standard

Property	Standard	Value
FM Approved Achievement	FM4880 and FM4881	FM4880 and FM4881
Green Product Certify by FM	FM4880 and FM4881	No urea-formaldehyde, no CFC or HCFC GREEN
Thermal Conductivity (K)	ASTM C518:2017	0.021 – 0.023 W/m·K
PIR Insulation Density	ASTM D1622	40 ± 2%
Closed cell content	ASTM D2856	>90%
Compressive Strength at 10% Strain	ASTM D1621	210 kN/m²
Classification of Reaction to Fire	BS EN 13501-1:2007 + A1:2009	B-s1, d0 (Lowest Emission Smoke Class)
Fire Behavior	EN 13823	Class B (FIGRA ≤ 120 W/s)
Smoke Production	EN 13823	Class s1 (SMOGRA ≤ 30 m²/s²)
Flaming droplets	EN 13823	Class d0 (No flaming droplets)
Determine the ignitability of the product	EN 11925-2	Result Pass
Flammability test by SDC	DIN 4102 part 1	Class B2
Flame Spread Index (FSI)	ASTM E84-15	Class A
Smoke Developed Index (SDI)	ASTM E84-15	Class A
Fire Resistance	BS 476 Part 20 and Part 22	4 hrs. at 100 mm
Wind Rating (FM 4881)	Wind Pressure Rating and Zone	+45 / -45 PSF Zone TC

Contact Our Experts

Free Consultation and Preliminary Project Assessment

One-Stop Solution for Your Industrial Projects

On-Time
Delivery

Planning and Control
at Every Stage

Standardized
Manufacturing Facility

Quality Control with
Advanced Machinery

Professional
Engineering Team

Providing Expert Consultation
and Appropriate Design Solutions

Product Quality
Assurance

Confidence in Product Quality
and After-Sales Service

Contact Information

CALL CENTER

098-272-1979

EMAIL

contact@munkongsteel.com

Head Office (Chonburi)

8 Moo 9, Nong Irun Subdistrict,
Ban Bueng District, Chonburi 20220, Thailand

Bangkok Sales Office

1/348 Soi On Nut 59/1, Sukhumvit 77 Road,
Prawet Subdistrict, Prawet District, Bangkok 10250, Thailand

Request a Quotation

Fill out the form below to receive a free consultation and preliminary quotation from MKS experts.

Build Strong
from Start to Finish

From concept to completion, MKS is with you every step of the way delivering solutions that make every project stronger, more reliable, and built for the future.
“Strong. Confident. Sustainable.”

Call Us Contact Us

STRONG
Premium Materials &
Proven Quality

CONFIDENT
Professional Expertise of Every Step

SUSTAINABLE
Responsible Solutions for Tomorrow

Contact Our Experts