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عربىTechnical Parameters for Insulated Panels
Insulation is described by thermal conductivity (λ, in W/m·K) and by the U-value of the whole panel. A lower number means better insulation. The values below are typical for the core material at normal temperature; aged and tested values for finished panels can differ, so please rely on the quotation data.
| Core | Typical λ (W/m·K) | Approx. U-value, 50 mm panel (W/m²·K) | Notes |
|---|---|---|---|
| PU (polyurethane) | About 0.022–0.028 | About 0.5 | Excellent insulation, combustible |
| PIR (polyisocyanurate) | About 0.022–0.026 | About 0.45–0.5 | Good insulation, better fire behavior than PU |
| EPS (polystyrene) | About 0.032–0.040 | About 0.65–0.8 | Economical, combustible |
| Rockwool (mineral wool) | About 0.036–0.044 | About 0.75–0.9 | Non-combustible, heavier |
| Honeycomb cores | Higher | About 1.5 or more | Little insulation, mainly for ceilings and dry partitions |
Thickness and use:
- 50 mm: common for general cleanrooms.
- 75–100 mm: used for chilled rooms and strong temperature differences.
- 100–200 mm: typical for cold rooms and freezers, with specialized doors and floors.
Details that decide real performance:
- Thermal bridges: metal profiles can conduct heat, and joints need good design and sealing.
- Vapor barrier: metal faces block vapor, but joints must be sealed to prevent condensation inside.
- Condensation: wall surfaces must stay above the dew point of the room air.
- Airtightness: leaks carry as much heat as conduction through poor insulation.
Aging of foam: the thermal conductivity of foam cores can rise slightly over time as gases diffuse, so design values often use an aged figure. Please ask us which value a quotation refers to.
We are glad to explain how to compare thermal data from different suppliers on equal terms.
Cross-Border Delivery and Localized Construction Support
Insulated panels are thick and bulky, so freight planning matters. We calculate loading carefully and protect the panels, so you receive panels that are flat, dry and ready to install. Insulated doors and windows are packed separately, since they are more delicate.
- Load planning: thick panels use more container space, so we optimize the plan and suggest mixed loads.
- Protective packing: film, corner guards and edge protection keep faces and joints undamaged.
- Numbered parts: every panel carries a position code that matches the drawing.
- Documents: packing list, commercial invoice and certificate of origin, with FOB, CFR or CIF terms.
- Installation package: labeled drawings, manual and video guidance.
Local construction: good insulation depends on good joints. The joints between panels, the wall-to-floor and wall-to-ceiling junctions and all penetrations must be sealed continuously, so that no cold or warm air passes and no condensation forms. Chilled rooms and freezers also need a vapor-tight seal around doors, and freezers need an insulated floor with frost protection, which is outside panel supply.
Local building and energy rules apply, and your engineer remains responsible for approvals. We provide drawings, thermal data and installation guidance to support them.
Insulated panels are long and heavy, so unloading needs a forklift or a crane with soft slings. Please prepare a covered storage area before the shipment arrives, and store panels flat and dry. We can also split shipments into stages that match your construction schedule.
Staged shipments are especially useful when the site has little storage space.
Quality Control and Certification
Thermal performance is measured on tested samples, while real performance also depends on installation. We quote thermal values only from material or panel data, and we do not promise a result for a finished room, since leakage, door openings and room use also affect it.
| Control step | Inspection | Why it matters |
|---|---|---|
| Incoming materials | Core density and type, steel faces, adhesive, profiles | Matches the data sheet |
| Panel production | Core fill, bonding, thickness, flatness | Uniform insulation |
| Edge and joint check | Edge profile and sealing | Fewer thermal and moisture paths |
| Door and window | Gasket contact, glazing, frame | Heat and air tightness |
| Dimension check | Length, width, thickness, squareness | Tight joints |
| Packing | Count, labels, edge protection | Undamaged delivery |
Documents available: material specifications, factory inspection records and, where available, thermal conductivity or panel test data and fire reports for the selected core.
If your project needs a specific thermal standard or test method, for example panel testing to a European product standard, please tell us at the quotation stage. We will confirm what data exists. Customer audits and sample approvals are welcome.
Consultants and energy auditors often ask for the basis of the thermal data. We provide the material specifications and the test data that exist, and we explain how panels are pressed and inspected. Our factory can host audits or live video tours, so reviewers can see the process themselves.
Batch records are kept for each project, so a later question about a specific room can be traced to production. We also suggest agreeing the target U-value and the test basis before the order, so that both sides know how the result will be judged.
After-Sales Service and Response Capability
When insulation fails, signs show up as condensation, drips, ice, mold or rising energy bills. Our after-sales service helps you find the cause and fix it with matching parts, using the drawings and records we keep.
- Fast communication: technical questions answered in English by email, phone or messaging.
- Remote diagnosis: photos of wet panels, frost, stains or damaged joints help us assess.
- Spare parts: panels, door seals, heaters for cold room doors, gaskets, sealants and windows.
- Upgrade advice: where insulation is too thin or leaks, we suggest improved panels or details.
- Engineer visits: by arrangement.
Typical problems and responses:
| Observation | Possible cause | Suggested action |
|---|---|---|
| Condensation on wall | Surface below dew point, thin insulation or thermal bridge | Improve insulation or room conditions, seal joints |
| Ice at door frame | Worn seal or failed heater | Replace seal, check heater |
| Wet or stained panel | Open joint, damaged face | Reseal, replace panel |
| High energy use | Air leakage, open doors, high loads | Check seals, review operation |
A thermal camera survey can show cold or hot spots quickly. We can review the images and suggest repairs.
Thermal problems are easy to see when you look for them. We suggest an annual walk-through, ideally on a day with a strong temperature difference between inside and outside, to check for cold or damp patches, ice at doors and condensation on walls. A thermal camera survey can show weak spots quickly.
Sending us photos or thermal images with the room name lets our engineers compare them with the project drawings and propose a repair. Replacement parts are made to the original specification. For urgent cases, we discuss the fastest shipping option.
Spare door seals and heaters for cold room doors at the site help you act the same day.
Commercial Terms, Warranty and Lifecycle Cost
Thicker or better insulation costs more at the start, but energy cost continues for the life of the plant. In hot or cold climates and in chilled rooms, the extra insulation usually pays back quickly. In mild climates with a mainly air-driven load, the saving is smaller, and a balanced choice makes sense.
| Item | Our approach |
|---|---|
| Quotation | Itemized by area, core and thickness, with drawings |
| Trade terms | FOB, CFR or CIF, defined in the quotation |
| Payment | Commonly a deposit with balance before shipment or against documents; final terms in the contract |
| Warranty | Defined by component group in the contract |
| Lead time | Given after drawing confirmation |
| Customization | Core, thickness, faces, door and window options |
Where cost is decided:
- Core type: PU and PIR cost more than EPS but insulate much better.
- Thickness: each step up adds cost and reduces heat flow.
- Doors: insulated doors for cold rooms are a major item.
- Airtightness: sealing is inexpensive compared with the energy it saves.
Refrigeration, HVAC, floor insulation, vapor control beyond panels and permits are outside our supply. Warranty exclusions are stated clearly in the contract.
When comparing quotations, ask each supplier to state the core type, density, thickness, tested conductivity, face thickness and joint type, not only the price per square meter. A thinner panel or a lighter core is cheaper, but its energy cost continues for years.
We provide itemized quotations and can show alternatives, such as 100 mm PU for chilled rooms and 50 mm EPS for dry storage, so that each room gets the insulation it needs.
Real Factory Strength for Insulated Envelope Projects
Insulated panels need accurate pressing and good bonding. Pharma United Co., Ltd., founded in 2006, runs two factories in Kunshan and Qianjiang covering 20,000 m², with more than 60 staff. We are a manufacturer, not a trading company.
| Indicator | Information |
|---|---|
| Experience | 20+ years in cleanroom engineering |
| HPL cleanroom panels | About 250,000 m² per year; China's largest HPL cleanroom panel manufacturer |
| Container shipments | More than 1,000 forty-foot high-cube containers per year |
| Location | Kunshan, about 30 km from Shanghai |
| Product range | Panels, doors and windows, equipment, modular PODs, HEPA products |
| Service | Design, manufacture and installation support |
Why this helps insulation buyers: we offer PU, PIR, EPS and rockwool cores in one system, so you can match each room to its needs. Because panels, doors and windows come from one source, thickness, grooves and seals are designed to match, which reduces thermal leaks at the interfaces.
Samples, references, factory visits and video tours are available on request. Our engineers answer technical questions directly.
Our designers prepare layouts and drawings, our engineers review joint and interface details, and our production teams run dedicated lines for panels, doors and equipment. Export coordinators prepare packing and documents for shipments to many countries.
Customers in food, pharmaceutical and logistics fields return for new rooms and spare parts, and we can share photos and videos of completed rooms on request. Visitors are welcome at our factory by arrangement, where you can follow panel pressing, inspection and packing.
Our staff reply promptly and in plain language, and our designers can adapt standard layouts to your building and your process.
Thermal-Insulated Cleanroom Envelope FAQ
Q1. Which core is best for insulation?
PU and PIR give the best insulation per thickness. Rockwool insulates less but is non-combustible, and EPS is the most economical.
Q2. How thick should the panel be?
50 mm is common for general cleanrooms, while chilled rooms often use 75–100 mm and freezers more. Your thermal designer decides.
Q3. Will insulation cut my energy bill?
It helps, but cleanroom energy is mostly driven by air changes and leakage. Insulation matters most in extreme climates and chilled rooms.
Q4. How do I prevent condensation?
Keep surfaces above the dew point with enough insulation, sealed joints and controlled humidity, and avoid thermal bridges.
Q5. Can you supply cold room doors?
We supply insulated doors suitable for chilled rooms. Freezer doors and floors need specialized details, and we will tell you what we can offer.
Q6. Are insulated panels fire safe?
PU, PIR and EPS cores are combustible, so fire rules may limit their use. Rockwool is non-combustible. Your fire engineer decides.
Q7. How do I get a quotation?
Send your climate data, room temperatures, drawings and destination country.
Q8. Does thicker insulation always pay back?
Not always. It pays back fastest in chilled rooms and extreme climates. In mild climates, your thermal designer can calculate the best thickness.
Q9. Do you offer samples?
Yes, samples of panels and joints can be sent for approval.
Our staff reply promptly and in plain language, and our designers can adapt standard layouts to your building and your process.
