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Islamuddin & Sons has been a pioneer in the manufacture of EPS Thermopore and Polyurethane (PU) insulation products since 1969 — delivering quality solutions that set the standard for excellence across industries.
Expanded polystyrene — lightweight, low moisture absorption, cut to any dimension.
EPSLightweight EPS pipe sections for plumbing and pipework with easy snap-fit installation.
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EPSHigh-density insulation sheets for walls, roofs, and floors with excellent thermal resistance.
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EPSThermally insulated boxes for cold chain logistics, fish transport, and perishable goods.
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EPSShock-absorbing Thermopore packaging moulded to your exact product dimensions.
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EPSLarge solid blocks of EPS in densities from 10 to 32 kg/m³ — the foundation from which sheets and custom shapes are cut. Standard 16ft × 4ft, thicknesses 4″ to 40″.
View Details →Rigid polyurethane foam — the highest R-value per inch of any standard insulation.
PUHigh-performance polyurethane foam sheets delivering superior R-values for construction and cold rooms.
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PUPre-insulated polyurethane pipe sections for HVAC, industrial pipelines, and plumbing.
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PUFactory-moulded two-piece elbow sections — uniform insulation thickness around pipe bends, eliminating site-cut gaps.
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PUFactory-manufactured piping system with high-density rigid PU foam insulation and protective outer jacket. Suitable for HVAC, chilled water, hot water, and industrial process applications.
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PUDurable, highly buoyant polyurethane floats with UV resistance — custom shapes and sizes.
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What began as a family enterprise has grown into one of the region's most respected thermal insulation manufacturing companies — built on craftsmanship, trust, and an unwavering commitment to quality passed down through generations.
Three generations of expertise behind every product.
Modern lines ensuring accuracy on every batch.
Multi-stage QC from raw material to delivery.
Every specification met to your exact requirement.
We combine decades of manufacturing experience with modern technology and an unwavering commitment to delivering exactly what our clients need.
Fully equipped EPS & PU production lines at scale.
Any dimension, density, or grade — precisely tailored.
Multi-stage checks from raw material to dispatch.
Consistent lead times and nationwide logistics.
A transparent, efficient process designed to get you the right product — on time.
Share your specs, quantity, and timeline.
Our team recommends the ideal material.
We produce samples for your approval.
Full production with multi-stage QC.
Securely packed and dispatched on schedule.
Our manufacturing facility is located in the Korangi Industrial Area, one of Karachi's premier industrial zones. Visit us to discuss your project, or pick up your order directly.
A family legacy of thermal insulation manufacturing — trusted across Pakistan since 1969.
What began as a family enterprise over five decades ago has grown into one of the region's most respected thermal insulation manufacturing companies. Islamuddin & Sons is built on a foundation of craftsmanship, trust, and an unwavering commitment to quality passed down through generations.
We manufacture a comprehensive range of EPS (Expanded Polystyrene / Thermopore / Thermopole) products including insulation sheets, pipes, custom packaging, and boxes — as well as PU (Polyurethane) products such as insulation sheets, pipes, and fishing floats.
Our clients range from large construction firms and cold chain operators to individual businesses — all of whom trust Islamuddin & Sons for products that perform, last, and deliver real value.
Three generations of expertise behind every product we manufacture.
Modern production lines ensuring accuracy and consistency at every batch.
Multi-stage quality control from raw material intake to final delivery.
Every dimension, density, and specification met to your requirements.
15K+ projects delivered across Pakistan — built on honesty and reliability.
Recyclable materials and waste-conscious processes throughout our operations.
Expanded Polystyrene (EPS) — known as Thermopore or Thermopole — is one of the most versatile thermal insulation materials. Islamuddin & Sons manufactures a complete range of EPS products since 1969.
High-performance Expanded Polystyrene insulation products — standard sizes and fully custom specifications.
EPSLightweight EPS pipe insulation sections for plumbing and pipework. Effective thermal protection with easy snap-fit installation in all standard and custom diameters.
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EPSEPS pipe sections finished with a reflective aluminum foil facing for enhanced thermal performance, vapour resistance, and a clean professional finish on exposed pipework.
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EPSEPS pipe sections finished with a durable kraft paper facing that adds mechanical protection and a tidy outer surface, ideal for concealed and semi-exposed pipe runs.
Request a Quote →Insulating elements with flexible outer layers such as kraft paper and aluminum foil are used especially for the thermal insulation of cold rooms, hot rooms, A/C rooms, roofing, pipelines, inside partitions, and anywhere precise temperature maintenance is required. Faced insulation reduces a meaningful percentage of electricity consumption and has excellent capacity to maintain the required temperature wherever needed.
EPSHigh-density Expanded Polystyrene sheets for walls, roofs, and floors. Excellent thermal resistance with low moisture absorption. Available in multiple grades and densities.
Request a Quote →EPSThermally insulated EPS boxes for cold chain logistics, fish transport, medical supplies, and perishable goods. Custom dimensions, wall thickness, and lid options available.
Request a Quote →EPSShock-absorbing, lightweight Thermopore packaging moulded to your exact product dimensions. Ideal for electronics, appliances, medical equipment, and fragile goods.
Request a Quote →EPSLarge solid blocks of Expanded Polystyrene — the raw form from which our sheets, custom shapes, and packaging are cut. Available in a wide range of densities and thicknesses to match any project specification. Bulk block orders are common for clients who prefer in-house cutting.
View our complete EPS technical data — including density grades, thermal conductivity, compressive strength, chemical resistance, and the full EPS technical brochure.
View EPS Technical Data & Brochure →Polyurethane (PU/PUR) foam delivers superior thermal performance with the highest R-values per inch of any insulation material. Islamuddin & Sons manufactures a complete PU product range since 1969.
High-performance PU foam insulation products — standard specifications and fully custom configurations.
PUHigh-performance polyurethane foam sheets delivering superior R-values. Used in construction, cold rooms, industrial facilities, and refrigerated panels.
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PUPU foam sheets finished with a reflective aluminum foil facing for superior thermal performance and an effective vapour barrier — ideal for cold rooms, A/C rooms, and roofing.
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PUPU foam sheets finished with a durable kraft paper facing for added mechanical protection and a clean surface — well suited to partitions, roofing, and concealed applications.
Request a Quote →PUPre-insulated polyurethane pipe sections for HVAC systems, industrial pipelines, and plumbing. Available in all standard and custom diameters and lengths.
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PUPU pipe sections finished with a reflective aluminum foil facing for enhanced thermal efficiency and vapour resistance on HVAC and industrial pipelines.
Request a Quote →
PUPU pipe sections finished with a durable kraft paper facing that provides a protective outer layer and tidy finish for concealed and semi-exposed pipe runs.
Request a Quote →Insulating elements with flexible outer layers such as kraft paper and aluminum foil are used especially for the thermal insulation of cold rooms, hot rooms, A/C rooms, roofing, pipelines, inside partitions, and anywhere precise temperature maintenance is required. Faced insulation reduces a meaningful percentage of electricity consumption and has excellent capacity to maintain the required temperature wherever needed.
PUFactory-moulded two-piece split elbow sections delivering uniform insulation thickness around pipe bends. Standard 2″ insulation thickness, with sizes including 3″ NB, 4″ NB, 6″ NB and additional sizes available to customer specification. Pre-formed sections eliminate the gaps commonly created by site-cut insulation, dramatically reducing labor time and helping prevent condensation, water damage, mold growth, and corrosion under insulation (CUI).
Request a Quote →PUFactory-manufactured piping system consisting of a carrier pipe (copper, PVC, PPR, HDPE, or steel) surrounded by high-density rigid polyurethane foam insulation and finished with a protective outer jacket. Designed to minimise heat loss and condensation while providing excellent thermal efficiency, durability, and long service life. Rigid PU foam is produced by mixing polyols and isocyanates using a high-pressure foaming technique with cyclopentane as the foaming agent. Suitable for HVAC, refrigeration, chilled water, hot water, and industrial process applications.
Request a Quote →PUDurable, highly buoyant polyurethane fishing floats with consistent density and UV resistance. Custom shapes, sizes, and colours for bulk orders.
Request a Quote →View our complete PU technical data — including thermal conductivity, density, fire performance ratings, pipe size tables, and the full PU technical brochure.
View PU Technical Data & Brochure →Comprehensive specifications for our EPS Thermopore and Polyurethane (PU) insulation products — for engineers, architects, and procurement professionals.
EPS is a rigid, closed-cell foam insulation made from expanded polystyrene beads. Islamuddin & Sons EPS Thermopore is produced in three standard density grades — PS 16 SE, PS 24 SE, PS 32 SE — with fully custom dimensions, thicknesses and shapes available. Construction material class B1 per DIN 4102.
Islamuddin & Sons Expanded Polystyrene (Thermopore) is a rigid, closed-cell foam insulation manufactured from expanded polystyrene beads fused under controlled heat and pressure. Produced in three standard density grades — PS 16 SE, PS 24 SE, PS 32 SE — with fully custom dimensions, thicknesses and shapes available. Construction material class B1 per DIN 4102.
EPS Thermopore combines very low thermal conductivity with high structural rigidity at low weight:
All properties tested in accordance with the relevant DIN standards (DIN 18164, DIN 4102, DIN 52612, DIN 4108, DIN 53420 and others). Standard tolerances and packaging available per client requirement.
Density and application class are matched to the service environment per DIN 18164, Part 1.
Complete physical properties for the three standard EPS grades. All values tested in accordance with the indicated DIN standards.
| Property | Standard | Unit | PS 16 SE | PS 24 SE | PS 32 SE |
|---|---|---|---|---|---|
| Type of application | DIN 18164, Part 1 | — | W | WD | WS + WD |
| Minimum apparent density | DIN 53420 | kg/m³ | 16 | 24 | 32 |
| Construction material class | DIN 4102 | — | B1 | B1 | B1 |
| Thermal conductivity — measured at +10°C | DIN 52612 | W/(m·K) | 0.036–0.038 | 0.036–0.038 | 0.036–0.038 |
| Thermal conductivity — design value | DIN 4108 | W/(m·K) | 0.040 | 0.040 | 0.035 |
| Compressive stress under 10% compression | DIN 5324 | N/mm² | 0.06–0.11 | 0.11–0.16 | 0.20–0.25 |
| Long-term compressive stress under <2% compression | — | N/mm² | 0.015–0.025 | 0.025–0.050 | 0.050–0.070 |
| Flexural strength | DIN 53423 | N/mm² | 0.06–0.30 | 0.15–0.39 | 0.33–0.57 |
| Shear strength | DIN 53427 | N/mm² | 0.08–0.13 | 0.12–0.17 | 0.21–0.26 |
| Tensile strength | DIN 53430 | N/mm² | 0.11–0.29 | 0.17–0.35 | 0.30–0.48 |
| Modulus of elasticity (compressive) | DIN 53457 | N/mm² | 1.60–5.20 | 3.40–7.00 | 7.70–11.30 |
| Heat distortion temp — short-term | DIN 53424 | °C | 100 | 100 | 100 |
| Heat distortion temp — long-term at 5,000 N/m² | DIN 18164 | °C | 80–85 | 80–85 | 80–85 |
| Heat distortion temp — long-term at 20,000 N/m² | DIN 18164 | °C | 75–80 | 80–85 | 80–85 |
| Thermal coefficient of linear change | — | 1/K | 5–7 × 10⁻⁵ | 5–7 × 10⁻⁵ | 5–7 × 10⁻⁵ |
| Specific heat capacity | DIN 4108 | J/(kg·K) | 1210 | 1210 | 1210 |
| Water absorption (underwater) — after 7 days | DIN 53434 | % vol. | 0.5–1.5 | 0.5–1.5 | 0.5–1.5 |
| Water absorption (underwater) — after 28 days | DIN 53434 | % vol. | 1.0–3.0 | 1.0–3.0 | 1.0–3.0 |
| Water vapour diffusion current density | DIN 52615 | g/(m²·d) | 40 | 35 | 20 |
| Water vapour diffusion resistance coefficient | DIN 4108 | μ | 20 / 50 | 30 / 70 | 40 / 100 |
Resistance of EPS Thermopore to commonly encountered chemicals. Categories below are for reference; in service, exposure time, concentration and temperature all affect performance — please contact us for application-specific guidance.
| Result | Active Agent |
|---|---|
| Salt Solutions & Soaps | |
| ✓ | Salt solutions (sea water) |
| ✓ | Soaps and wetting-agent solutions |
| Bleaches & Oxidizers | |
| ✓ | Bleaching lyes — hypochlorite, chlorine water, hydrogen-peroxide solutions |
| Acids | |
| ✓ | Dilute acids |
| ✓ | 35% hydrochloric acid; up to 50% nitric acid |
| ✗ | Anhydrous acids — fuming sulphuric acid, glacial acetic acid, 100% formic acid |
| Alkalis | |
| ✓ | Sodium hydroxide, potassium hydroxide, ammonia solution |
| Organic Solvents | |
| ✗ | Acetone, ethyl acetate, benzene, xylene, paint thinner, trichloroethylene |
| ✗ | Saturated aliphatic hydrocarbons — surgical spirit, test benzene |
| △ | Alcohols — for example methanol, ethanol |
| Fuels & Oils | |
| △ | Paraffin oil, Vaseline |
| ✗ | Diesel oil |
| ✗ | Motor fuel (normal and super gasoline) |
| ✓ | Silicone oil |
Polyurethane foam (PU/PUR) is a closed-cell rigid insulation that provides the highest R-value per inch of any standard insulation material. Islamuddin & Sons PU sections are manufactured from rigid polyurethane foam — characterised by closed-cell structure, low density, and excellent thermal stability across –180°C to +120°C.
Islamuddin & Sons PU Pipe sections are manufactured from Rigid Polyurethane Foam, characterised by its chemical synthesis, closed cell structure, low density and excellent thermal stability. The product ranges to fit for Pipe of ½″ to 12″ N.P.B. and from 25 mm to 50 mm insulation thickness.
Rigid Polyurethane foam combines strength with versatility — one of the most versatile insulation materials for the building industry:
Glass yarn reinforced Aluminium foil and Kraft paper is factory applied over the sections. Especially recommended for the insulation of cold pipes running through warm and humid spaces, to prevent vapour condensation. Longitudinal and transverse joints are wrapped with self-adhesive tape.
Standard length of PU Pipe Sections is 2 feet. The product is in two longitudinal sections. Packed in corrugated cardboard boxes resistant to impact.
Islamuddin & Sons PU Insulation Sheets — plain, kraft-paper-faced, and aluminum-foil-faced variants
When exposed to heat, Polyurethane Foam remains stable up to a temperature of 190°C to 200°C. Longer exposure to elevated temperature may result in melting and decomposition. The flash ignition value of 290°C – 300°C was obtained using the Setchkin apparatus in accordance with ASTM D 1920(53).
The contribution to Flame Spread of rigid Polyurethane foam is considerably reduced if provided with non-combustible facings such as Aluminium foil. Composite building materials attain a favourable fire safety classification such as DIN 4102, NEN 3383, BS 476 etc.
Rigid Polyurethane foam is characterised by its unrivalled insulating effect. The closed cells are filled with the vaporised blowing agent, which has an extremely low thermal conductivity. The rigid polyurethane foam, enclosed and impervious to diffusion, achieves calculated values of 0.020 W/m°K or lesser.
| Bore | OD (mm) | 1″ | 1½″ | 2″ |
|---|---|---|---|---|
| ½″ | 21 | ★ | ★ | — |
| ¾″ | 27 | ★ | ★ | ★ |
| 1″ | 33 | ★ | ★ | ★ |
| 1¼″ | 42 | ★ | ★ | ★ |
| 1½″ | 48 | ★ | ★ | ★ |
| 2″ | 60 | ★ | ★ | ★ |
| 2½″ | 73 | ★ | ★ | ★ |
| 3″ | 89 | ★ | ★ | ★ |
| 4″ | 114 | ★ | ★ | ★ |
| 5″ | 141 | ★ | ★ | ★ |
| 6″ | 168 | ★ | ★ | ★ |
| 8″ | 219 | ★ | ★ | ★ |
| 10″ | 273 | — | ★ | ★ |
| 12″ | 324 | — | ★ | ★ |
Detailed comparison of performance of different insulating materials in terms of density, strength and thermal conductivity.
| Insulant | Density kg/m³ | Therm. Con. W/m°K @10°C | Comp. Strength kPa | Shear Strength kPa | Rel. Moisture Absorption |
|---|---|---|---|---|---|
| EPS | 15 | 0.040 | 35 | 100 | Medium |
| EPS | 30 | 0.037 | 110 | N/A | Medium |
| XPS | 32 | 0.027 | 300 | 170 | Low |
| PUR — Islamuddin & Sons | 32 | 0.020 | 200 | 150 | Medium |
| Phenolic Foam | 32 | 0.027 | 170 | 50 | High/Med |
| Cellular Glass | 125 | 0.041 | 700 | 150 | Low |
| Mineral/Glass Fibre | 20 | 0.045 | N/A | N/A | High |
Our Polyurethane rigid foam 90° elbow / bend sections are factory-moulded and supplied as two-piece split sections for clean, fast installation around pipe bends. Standard 2″ insulation thickness, with sizes including 3″ NB, 4″ NB, 6″ NB and other sizes available to customer specification.
By maintaining surface temperatures above the dew point, our moulded elbow sections help prevent the most common failure modes in pipe insulation systems:
Islamuddin & Sons PU 90° Elbow / Bend Insulation Sections — moulded two-piece split design
Technical diagrams showing the correct method of applying PU pipe insulation to elbows, valves, and reducers.
For over five decades, our EPS Thermopore and Polyurethane insulation has been trusted on some of Pakistan's most prestigious construction, retail, and industrial projects — from the Sindh Assembly to major shopping malls, hospitals, food manufacturers, and government institutions.
A selection of the businesses, institutions, and developers we have proudly supplied over the years.
A selection of projects where our Polyurethane and Thermopore pipe and sheet insulation has been specified and installed. Across malls, hospitals, government buildings, food manufacturing plants, and more — our products perform where it counts.
Our EPS Thermopore and Polyurethane insulation products are trusted across a wide range of sectors in Pakistan and beyond.
From construction to fisheries — our products perform across diverse industries that demand reliability and precision.
EPS and PU insulation for walls, roofs, floors, cold rooms, and building envelopes. Helping architects and contractors meet energy efficiency standards.
Temperature-controlled packaging and insulated boxes for the safe transport of perishable goods, pharmaceuticals, and frozen products.
EPS fish boxes for fresh catch storage and transport. PU fishing floats for fish farming, net markers, and marine applications.
Custom EPS packaging solutions for electronics, home appliances, and fragile consumer goods. Precision-moulded to exact product dimensions.
Temperature-sensitive medical packaging and insulated transport boxes for vaccines, medications, and medical equipment.
PU pipe insulation for HVAC systems, industrial pipelines, and mechanical services. EPS pipe sections for plumbing and light industrial use.
Safe, food-grade insulated EPS boxes and packaging for fresh produce, meat, dairy, and other perishable food products.
PU foam buoyancy products and floats for marine applications, fishing, aquaculture net markers, and water sports equipment.
Precision EPS packaging for sensitive medical instruments, diagnostic equipment, and laboratory supplies requiring careful protection.
Chilled water and HVAC pipe insulation for shopping malls, supermarkets, and large retail floors — keeping cooling systems efficient across high-footfall spaces.
Insulation for processing plants, chilled and frozen storage, and production pipework at dairy, confectionery, ice cream, and beverage facilities.
Insulation supplied for assembly buildings, courts, banks, diplomatic missions, and military facilities where long service life and consistent supply matter.
HVAC and chilled water insulation for university campuses, hotels, and multi-storey commercial plazas with central cooling systems.
Pipe and vessel insulation for refineries, gas fields, and process plants — including moulded elbow sections that help prevent condensation and corrosion under insulation.
A look inside the Islamuddin & Sons manufacturing facility and our range of EPS and PU products.
Real photos from our manufacturing facility, production lines, and finished products.
Answers to the most common questions about our EPS Thermopore and Polyurethane (PU) insulation products.
Get in touch for quotes, bulk orders, or any enquiries. Our team responds within 24 hours.
Whether it's a standard bulk order or a fully custom EPS or PU product — our team is ready to help you find the right insulation solution at the right price.