Overview
The CSP-50 is a 50 mm cement-faced rigid polyurethane sandwich panel manufactured by Wedge Industries Limited in the standard 8 ft × 4 ft (2440 × 1220 mm) building format. A 30 mm PUF core is poured in place between two 2 × 10 mm fibre cement boards, so the foam bonds 100% of both interfaces as it rises — there is no adhesive layer and no glue line to fail.
Typical use: Internal partitions, dry-lining and light cladding.
Technical Specifications
| Property | CSP-50 |
|---|---|
| Panel size | 2440 × 1220 mm (8 ft × 4 ft) — 2.973 m² per panel |
| Facing boards | 2 × 10 mm high-density fibre cement board, both faces |
| Core | 30 mm rigid polyurethane (PUF), poured in place |
| Total panel thickness | 50 mm |
| Core density | 45–47 kg/m³ moulded |
| Core thermal conductivity | 0.022 W/m·K |
| Core thermal resistance (R) | 1.36 m²K/W |
| Foam charge per panel | 4.5 kg |
| Bonding method | Pour-in-place — 100% interface contact, no adhesive |
| Core insulation cost basis | ₹273/m² (core chemical only — see pricing note) |
| Thickness tolerance | ± 1 mm on total panel thickness |
| Manufacture | Faridabad, India |
Applications
- Prefabricated and modular housing wall panels
- Site office, labour accommodation and portable cabin envelopes
- Cold room and cold storage partitioning
- Industrial partitions and dry-area internal walls
- Cladding over steel and light-gauge steel framing systems
Specification Rules
Two rules govern how Wedge Industries Limited specifies this panel, and both exist because of documented field failures rather than sales preference:
- Fibre cement on every exposed external face. MgO boards absorb ambient humidity and exude chloride-rich water — the documented cause of a facade failure in Denmark with repair costs estimated at approximately DKK 2 billion. MgO facing remains available and is often superior for internal, dry and fire-rated assemblies.
- PUF core, never EPS, in any fire-rated or humid application. PUF is thermoset and chars in place; EPS is thermoplastic and melts and drips.
Quality Control
- Thickness measured at 8 points per panel to ± 1 mm on the total build
- Tap test on every panel for voids and debonded zones
- Density coupon cut per shift or per new drum pair; core density verified against the 45–47 kg/m³ band
- Weekly peel test on offcuts — cohesive failure inside the foam is the pass criterion
- Every panel labelled with code, date, polyol and isocyanate batch numbers, charge weight and operator; the batch log is the basis for Material Test Certificates
Why buy from Wedge Industries Limited
- Manufacturing bases in India, UK, Spain and China; exports to 45+ countries
- Panels made to order in your thickness and facing combination rather than sold from a fixed catalogue
- Full insulation range under one supplier — foam insulation, wall insulation and prefab house systems
- Material Test Certificates issued from the panel batch log
- Export documentation, HS-code and Incoterms support through our sister consultancy, ZJELL Limited
Frequently Asked Questions
What is the CSP-50 panel made of?
A 30 mm poured-in-place PUF core between two 10 mm fibre cement boards, finished at 50 mm in 2440 × 1220 mm format, 2.973 m² per panel.
Why fibre cement facing and not MgO board?
Magnesium oxide boards are hygroscopic. Independent testing shows oxychloride MgO board begins weeping liquid at 89% relative humidity after gaining 43% of its mass in water, and that liquid carries 44,123 mg/litre of chloride — over twice the chloride concentration of seawater — which corrodes steel fixings and framing. Indian monsoon and coastal conditions routinely exceed 89% RH for weeks. MgO facing is offered for internal, dry and fire-rated assemblies only.
What is the thermal performance?
Approximately 1.36 m²K/W core thermal resistance at a core conductivity of 0.022 W/m·K. An EPS core would need about 1.64 times the thickness for the same figure, making the wall thicker and heavier for the same U-value.
Is the core poured or glued?
Poured in place. The rising foam is its own adhesive and bonds 100% of both board interfaces by construction, so there is no glue line to starve and no dependence on operator spread consistency.
Why PUF and not an EPS core?
PUF is a thermoset and chars in place; EPS is a thermoplastic that softens, melts and drips. Wedge Industries Limited also supplies passive fire protection systems and will not put a combustible thermoplastic core inside a cement-faced panel that reads as fire-safe.
What is the minimum order quantity and lead time?
Panels are made to order in batches. Minimum order quantity and lead time are confirmed with your quotation — please send panel quantity, thickness and delivery location.
Pricing
The insulation core cost basis for CSP-50 is ₹273/m². Delivered panel price depends on the fibre cement board rate, quantity and delivery location, so a firm ex-works and delivered rate in ₹ and $ is issued against your enquiry. Request panel pricing with quantity, thickness and destination.
