Imagine two panels with the same colour and stated thickness. They appear interchangeable until the quotations reveal different cores, metal facings and joint details. This illustrative comparison shows why appearance is an unreliable specification.
Begin with the room’s required thermal, acoustic, structural and fire performance. Then request documentation for the actual product proposed, including its intended application.
Select a documented product and an applicable assembly, rather than a reassuring core label.
Conceptual, not to scale. Joints, fixings and the specification are part of system performance.
Understand the core names
Product ranges include polyurethane, often labelled PU or PUR; polyisocyanurate, or PIR; and mineral-wool cores, including stone wool. Metecno’s product information demonstrates this range. Individual performance remains product specific.
Avoid declaring one core universally superior. Ask the supplier to map the proposed product to your project requirements. Missing information should remain marked as missing, rather than being replaced by assumptions.
Clarify what thickness means
Core thickness and metal-facing thickness are separate specifications. A profiled roof panel may also have different dimensions at the valley and rib. Request a cross-section so that competing quotations use a consistent definition.
Compare declared thermal performance under comparable conditions. Do not translate a thicker panel into a promised electricity-bill saving: occupancy, cooling equipment, openings and air leakage also affect consumption.
Read fire claims carefully
Reaction-to-fire classification and the fire resistance of an assembly answer different questions. “Fireproof” is not a substitute for an applicable test report and classification. A panel result cannot simply be assigned to an entire room with different openings and connections.
Have the relevant specialist review the proposed system against project requirements. Foreign manufacturer documentation does not automatically demonstrate local approval.
Keep the assembly in the decision
Review span data, coatings, fixings, joints and penetrations alongside the core. A substitution should be approved against all required characteristics, rather than colour and thickness alone.
Retain product identification and delivery records. For a NACE enquiry, specify the intended room use and request a documented comparison where more than one product is being considered.
Use a product approval record for proposed substitutions
A clear panel quotation can change when a supplier proposes an alternative because of availability. Attach a short comparison record to the purchase request, retaining the original selection alongside the proposed change. This gives the project reviewer consistent information instead of a photograph or an unsupported claim of equivalence.
| Approved information | Required substitution detail |
|---|---|
| Manufacturer and product code | Alternative product identity and applicable data sheet |
| Core, metal facings and coating | Documented differences with supporting product information |
| Joints and associated components | Effect on installation, quantities and approvals |
| Price and delivery date | Commercial changes stated without assuming acceptance |
Record the revision and approval date, then check delivery labels against the final selection. Mark unavailable documentation as unspecified and identify who must supply it before a decision. This record supports the technical review rather than replacing it. It keeps the panel selection traceable from quotation to delivery, preventing one matching thickness or colour from concealing other differences.
Questions & acceptance checklist
- Identify the product and core.
- Separate core and facing thickness.
- Review thermal data.
- Check the fire classification’s scope.
- Approve spans, joints and substitutions.
Before you decide
Does PIR mean the room cannot burn?
No. A core label is not a guarantee; review the product, assembly and applicable classification.
Is mineral wool always the right choice?
Selection depends on the required thermal, acoustic, fire and structural performance and other project constraints.
Can a light colour replace insulation?
No. Surface characteristics form only one part of the envelope specification.
Prepare a clear scope for your panel room
Share the intended use, dimensions, location and site photos; the quotation will identify the included structure, panels and installation works.
Sandwich panel room supply and installation in Jeddah
Request a panel room quotationTechnical & editorial references (3)
References support general principles. Product instructions and the approved design govern execution details.