FireSafe PIR Sandwich Panels Pakistan — Manufacturer Since 1959

Name: FireSafe PIR Sandwich Panels
Brand: FireSafe PIR
Availability: InStock

PIR sandwich panels are the building envelope behind virtually every modern cold storage facility, food factory, warehouse, and energy-efficient industrial building. Izhar Foster manufactures ozone-friendly PIR panels — described as "a revolutionary development in Pakistan" — and discontinued legacy polyurethane (PU) production years ago in favour of safer, more sustainable technology.

Thermal performance you can quantify

Insulating effect is approximately 49 times greater than concrete and 42 times greater than brick at equivalent thickness. Thermal conductivity λ ≈ 0.022 W/m·K (BS EN 14509 declared aged value). The result is roughly 30% savings on energy and maintenance over the building's life — and FireSafe PIR holds those numbers stable across the panel's 50+ year service life.

Thickness selector — pick the U-value, get the spec

Lower U-value = better insulation. Cold rooms below −20°C and pharmaceutical 2–8°C envelopes typically use 100–150 mm. Ambient warehouses and prefab buildings use 50–80 mm. All thicknesses ship in panel lengths up to 50 ft to eliminate site joints.

Core thickness	Thermal transmittance (U)	Thermal resistance (R)	Typical application
50 mm	0.36 W/m²K	2.78 m²K/W	Ambient warehouse, prefab buildings
60 mm	0.31 W/m²K	3.22 m²K/W	Light-duty cold rooms (+5 to +15°C)
80 mm	0.25 W/m²K	4.00 m²K/W	Chillers (0 to +5°C), food processing
100 mm	0.19 W/m²K	5.26 m²K/W	Cold stores (−5 to 0°C), pharma 2–8°C
150 mm	0.13 W/m²K	7.69 m²K/W	Freezers and blast freezers (−25 to −40°C)

Specials available up to 250 mm. U-values per Izhar Foster declared aged value method (BS EN 14509). For a sized recommendation, run our load calculator with your room temperature and ambient.

FireSafe PIR vs PU vs PUF vs EPS — and why it matters

"Sandwich panel" covers four distinct foam cores. The differences are real, measurable, and matter for cold-chain projects. PUF panel is a colloquial Pakistani search term — what's actually being made today, and what we manufacture, is PIR.

Core	λ (W/m·K)	Fire class	Blowing agent	Notes
PIR (FireSafe)	0.022	B1	Pentane (eco-friendly, zero ODP)	Self-extinguishing, low smoke, ASTM E84 / TSSC
PU / PUR / PUF	0.024	B2/B3	HCFC-141b (ozone-depleting)	Izhar discontinued PU production for safety + WHO concerns
EPS	0.034	B2/B3	Pentane	Cheaper. Not appropriate for cold rooms below 0°C or fire-rated envelopes
Mineral wool	0.038–0.042	A1 / A2	n/a	Best fire performance, worst insulation. Used where A-class is mandated

Environmental and safety

Eco-friendly pentane blowing agent — zero ODP, no CFCs, no HCFC-141b
Self-extinguishing — flame-retardant with no contribution to fire load
Fire category B1 (foam B2) per ASTM E84 surface burning characteristics test (same standard as TSSC)
Non-hygroscopic — water absorbency under 1% by volume; fully moisture-proof
Asbestos-free, formaldehyde-free
Pakistan's only PIR (not PU) sandwich panel manufacturer — we discontinued PU after WHO concerns over HCFC-141b chemistry

Construction advantages

Lightweight yet structurally strong (compressive strength >100 KPa at 10% compression)
Panels available up to 50 feet long — eliminating site joints in tall cold stores
Core thickness up to 250 mm for ultra-low-temperature freezers
Self-assembly tongue-and-groove design reduces construction time and cost
Lifespan exceeding 50 years with stable thermal performance

Technical specifications

Property	Value
Thermal conductivity (λ)	0.022 W/m·K (BS EN 14509 aged)
Density	40–45 kg/m³
Fire class	B1 (foam B2) — ASTM E84
Compressive strength	> 100 KPa at 10% compression
Tensile strength	> 100 KPa
Shear resistance	≥ 100 KPa
Water absorbency	< 1% by volume
Dimensional stability	< 1%
Asbestos content	None
Lifespan	50+ years
Standard core thicknesses	50 / 60 / 80 / 100 / 150 mm (up to 250 mm specials)
Maximum panel length	50 ft
Blowing agent	Pentane (eco-friendly, zero ODP)

Panel types

Wall panels: Vertical or horizontal installation with tongue-and-groove edges for tight, repeatable joints. Double panel lock guarantees fire resistance and seamless polyurethane seal preserves thermal insulating power across the joint.

Roof panels: Unique surface design with capillary-action-preventing chambers for long-term weatherproofing. Profiled lining with large bend radius protects the steel facing's coating across decades of thermal cycling.

Applications

Where pir sandwich panels are used.

Each application has different temperature, hygiene, and compliance demands. We've delivered for all of them.

01envelope

Cold stores

Every cold room we build uses our own PIR panels

02clean

Food processing

Hygiene-friendly clean-room and processing-floor envelopes

03ambient

Warehouses

Energy-efficient industrial warehouse construction

04mobile

Reefer vehicles

Lightweight high-insulation panels for reefer trucks

05B1

Fire-rated rooms

Class B1 panels for sensitive industrial environments

06ambient

Prefab buildings

Schools, offices, sports complexes, stadium structures

Frequently asked

PIR Sandwich Panels — questions buyers ask.

The technical and commercial questions we hear most often before a contract is signed.

01What is the U-value of a 100 mm PIR panel?

0.19 W/m²K declared aged value at 100 mm core thickness. At 150 mm we publish 0.13 W/m²K and at 50 mm 0.36 W/m²K — see the thickness selector table above for the full range.

02What thicknesses do you make?

Standard cores are 50, 60, 80, 100, and 150 mm. Specialised applications up to 250 mm. Cold rooms below −20°C usually use 100–150 mm. Panels available up to 50 ft long to eliminate site joints.

03How does PIR compare to PUR / PUF?

PIR (Polyisocyanurate) has lower thermal conductivity (λ ≈ 0.022 vs 0.024 W/m·K) and significantly stronger fire resistance (B1 vs B2/B3) than PUR/PUF. Izhar discontinued PUR/PUF panel production after WHO and ozone-layer concerns about HCFC-141b — the foam expanding agent used in PUR. Our FireSafe PIR uses eco-friendly pentane instead. PUF panel is a colloquial Pakistani search term — the modern, safer equivalent we manufacture is PIR.

04What's the difference between PIR and EPS sandwich panels?

EPS (Expanded Polystyrene) has λ ≈ 0.034 W/m·K and is fire class B2/B3 — meaningfully worse on both insulation and fire resistance than PIR. EPS is cheaper and works for ambient warehouses but is not appropriate for cold stores below 0°C or any application with fire-rated envelope requirements.

05Are panels delivered ready to install?

Yes. Tongue-and-groove edges allow rapid self-assembly with our installation teams or qualified subcontractors. Panels up to 50 ft eliminate site joints.

06What's the panel lifespan?

Over 50 years with stable thermal performance. PIR is dimensionally stable (<1% drift) and non-hygroscopic — water absorbency under 1% by volume.

07Are FireSafe PIR panels ASTM E84 compliant?

Yes. Foam classified B2 and full panels classified B1 per ASTM E84 surface burning characteristics test (same standard as TSSC). Panels are flame-retardant and self-extinguishing — they limit flame spread, smoke generation, and burning droplet formation, which is why insurers and cold-chain auditors specify them.

New · Tool 8

Want a rough cost estimate? Sales-engineer tool, ±20% band.

Sales-engineer tool that combines sizing with cost output. Editable Izhar margin line. Pakistan-tuned across 12 cities and 24 commodities. PIR panel area, civil, refrigeration — costed for any thickness from 50 to 200 mm.

Open the rough estimator →

FireSafe PIR panels — 49× more insulating than concrete. Made in Pakistan.