Jumbolon Sheet (XPS Board)
in Pakistan — 2026
Call it jumbolon sheet, Diamond Jumbolon, or XPS board — it is all the same product. We supply genuine XPS insulation for roofs, walls, under-slab, and moisture-prone areas. Factory-direct pricing. Delivery across Pakistan.
Quick Specifications
Jumbolon (XPS) Sheet — IK Thermopore Pakistan
Jumbolon Sheet, Diamond Jumbolon, XPS Board — They Are All the Same Thing
Different Names, One Product
Jumbolon sheet, Diamond Jumbolon, XPS board, and extruded polystyrene are all names for the same material. The name changes depending on who you ask — but the product is always XPS (Extruded Polystyrene).
What Is Diamond Jumbolon?
Diamond Jumbolon is a popular brand name that became so widely used, people now say it to mean any XPS sheet. It is the same situation as calling all photocopies "Xerox" — the brand name became the product name.
How Is XPS Different from EPS?
Regular thermopore (EPS) is made by expanding polystyrene beads using steam — its cells are open and loosely bonded. XPS is made by pushing molten polystyrene through a die under high heat and pressure — its cells are fully sealed and tightly packed.
Why Sealed Cells Matter
Because XPS cells are fully sealed, water cannot penetrate the foam. Water absorption stays below 1% — even after years of direct moisture exposure. This makes XPS perform far better than EPS in wet roofs, basements, and coastal areas.
Compressive Strength Advantage
XPS holds its shape under heavy concrete loads without compressing or deforming. Low-density EPS can crush under similar weight. That is why engineers specify XPS for under-slab floors and heavy roof assemblies.
When Is EPS the Better Choice?
For large, dry roofs on a tight budget, thermopore (EPS) gives more coverage per rupee. IK Thermopore supplies both — and will honestly tell you which one fits your project better.
Quick reminder: Jumbolon sheet, Diamond Jumbolon, XPS board, XPS insulation, and extruded polystyrene are all the same product. IK Thermopore supplies all of them. Call us and we will confirm availability, thickness, and pricing the same day.
Jumbolon Sheet
The everyday market name. Walk into any hardware shop and ask for this.
Diamond Jumbolon
A popular brand name that became the go-to term for all XPS sheets in Pakistan.
XPS Board / XPS Sheet
The technical term used by engineers, architects, and project specs.
Extruded Polystyrene
The scientific name. Found in building codes and technical documents.
Why Does Jumbolon Sheet Actually Work? A Simple Explanation
Trapped Air Blocks Heat Transfer
XPS is a block of millions of tiny sealed air bubbles. Air is a poor conductor of heat — so the sheet stops heat from passing through it. That is why your roof stays cooler in summer and your AC does not have to work as hard.
Sealed Cells Mean Zero Moisture Entry
Unlike EPS, every cell in XPS is fully closed. Water simply cannot get in. Even after years of rain, seepage, and direct moisture exposure, the insulation value stays almost exactly the same.
It Handles Heavy Loads Without Compressing
Pour concrete on top of XPS and it holds its shape permanently. Low-density EPS can collapse under the same load. That is why XPS is the correct choice for under-slab and heavy roof assemblies.
| Property | Jumbolon (XPS) Result | Why It Matters in Pakistan |
|---|---|---|
| 💧 Moisture Resistance | Less than 1% water absorption | Monsoon, seepage, coastal areas — performance does not drop even when wet. |
| 💪 Compressive Strength | High — up to 350 kPa | Concrete, tiles, heavy roof finishes — the sheet stays flat and effective. |
| 🌡️ R-Value (Insulation) | 5.0 per inch | Better than EPS per inch — same thickness gives more heat reduction. |
| ⚖️ Density | 35 kg/m³ | Higher density = better structural integrity and longer life span. |
Jumbolon (XPS) vs Thermopore (EPS) — Which One Do You Actually Need?
Both Are Good — The Situation Decides
This is not about which one is "better." It is about which one fits your specific situation. Use the comparison table below to decide quickly — then call us if you are still unsure.
| Feature | Jumbolon (XPS) 🏆 | Thermopore (EPS) |
|---|---|---|
| Moisture Resistance | Excellent — less than 1% | Good — around 2% |
| R-Value per Inch | 5.0 — stronger per inch | 3.8 to 4.2 |
| Compressive Strength | High — up to 350 kPa | Medium — depends on density |
| Density | 35 kg/m³ | 15–25 kg/m³ typical |
| Price per Sheet (6×3 ft) | PKR 800–3,500+ | PKR 300–900 |
| Best Situations | Wet areas, coastal, under-slab, basement | Large dry roofs, budget-friendly projects |
| Lifespan | 50+ years | 50+ years |
| DIY Installation | Yes — easy to cut and fix | Yes — same ease |
Our Honest Recommendation
Leaky roof or Karachi location — go with XPS. Large dry roof in Lahore or Multan on a budget — thermopore gives better value per rupee. Not sure? Call us and describe your project. We will give you an honest answer. We supply both.
Still unsure? Call us and describe your roof. We will tell you which one makes more sense — no sales pressure, just honest advice. We supply both products.
Jumbolon Sheet Price in Pakistan 2026 — Competitive Market Rates
Why Prices Vary Across Suppliers
XPS raw material is imported — the price moves with the dollar exchange rate and shipping costs. Density, sheet size, and order quantity also affect the final rate significantly.
2026 Market Price Range (Per Sheet — 6×3 ft)
Based on current Pakistan market rates, here is what you can expect. IK Thermopore offers factory-direct pricing — which means you skip the middleman markup completely.
| Thickness | Sheet Size | Market Price Range (PKR) | IK Thermopore | Best Used For |
|---|---|---|---|---|
| 1 Inch (25mm) | 6×3 ft / 4×8 ft | PKR 800 – 1,500 | Factory Direct ↓ | Wall insulation, light roof heat proofing |
| 2 Inch (50mm) POPULAR | 6×3 ft / 4×8 ft | PKR 2,500 – 3,500 | Factory Direct ↓ | Roof insulation, wet areas, water tanks |
| 3 Inch (75mm) | Custom cut | PKR 4,500 – 7,000 | Custom Quote | Under-slab, cold storage, basement |
Get factory-direct pricing: Call or WhatsApp with your thickness, size, and quantity. Our price will be lower than market rate — no middleman, no markup. Same-day quote guaranteed.
6 Places Where Jumbolon Sheet Works Better Than Regular Thermopore
These are the real-world situations where contractors and homeowners in Pakistan reach for XPS over EPS — and why.
Roofs That Leak or Hold Water
EPS absorbs moisture over time and slowly loses its insulation value. XPS absorbs less than 1% water — even after years of direct exposure to rain and seepage.
In Karachi, Hyderabad, and monsoon-heavy cities, waterproofing contractors specify XPS instead of EPS for exactly this reason.
Under-Slab Floor Insulation
Concrete poured directly on the ground transfers ground temperature straight into the floor. A layer of jumbolon sheet between the ground and the slab blocks that transfer completely.
Low-density EPS would crush under the weight of wet concrete. XPS holds its shape — so the insulation layer stays intact permanently under the finished floor.
Basements and Underground Walls
Basement walls sit in constant contact with damp soil. Regular insulation absorbs that moisture over time and breaks down. XPS is specifically suited for below-grade use — it does not absorb water even in direct ground contact.
High-rise and commercial buildings in Lahore and Karachi are increasingly specifying XPS below grade. Most engineers will not use EPS there without additional waterproofing layers.
Rooftop Water Tank Insulation
Pakistan summers turn rooftop tanks into hot water heaters. Wrapping the tank with jumbolon sheet fixes this quickly — water stays noticeably cooler throughout the day.
Because XPS is in direct contact with the tank surface — and often with condensation — its near-zero water absorption means it stays effective for years without degrading.
EIFS Exterior Wall Cladding
EIFS means wrapping the outside of a building in foam insulation before applying render or cladding. The result is zero thermal bridging — heat cannot sneak through the structure.
Commercial and premium residential projects in Lahore and Islamabad are adopting this system. It is internationally standard practice and is growing fast in Pakistan too.
Cold Storage Moisture-Critical Layers
Cold rooms generate condensation. Warm air hits cold surfaces and moisture forms inside the wall assembly. XPS sealed cell structure stops condensation from penetrating — EPS cannot do this reliably.
For pharmaceutical cold rooms, blast freezers, and ice factories, the extra cost of XPS over EPS is fully justified by longer performance life and lower maintenance over time.
Who Orders Jumbolon Sheet from IK Thermopore?
From homeowners fixing a leaky roof to engineers specifying cold room panels — here is who we supply jumbolon (XPS) sheets to across Pakistan.
We Deliver Jumbolon Sheet to Every Major City in Pakistan
Lahore, Karachi, Islamabad, Multan — wherever your project is, we can get the sheets to you. Call to confirm the delivery timeline for your city.
Ordering is simple.
Call or WhatsApp with your thickness, sheet size, quantity, and city. We send a clear price and delivery timeline on the same business day.
Lahore orders dispatch in 1–2 working days. Other major cities receive orders in 3–5 working days.
Common Questions About Jumbolon Sheet — Answered Straight
No jargon, no filler. Just the questions buyers actually ask before they order, and the honest answers.
More Insulation & Packaging Products from IK Thermopore
Need Jumbolon Sheet for Your Project?
Tell us the thickness (1", 2", or 3"), sheet size, quantity, and your city. We will send a clear, factory-direct quote the same business day.
Not sure whether to go with jumbolon (XPS) or thermopore (EPS)? Just ask — we will give you an honest answer based on your actual project, not just sell you the more expensive option.