PUF Sandwich Panels

Insulated panels for energy-efficient walls and roofs.

When a building must maintain precise internal temperatures, meet stringent hygiene standards, or be erected and operational within a compressed construction timeline, conventional roofing sheets and insulation batts simply cannot deliver what is required. PUF Sandwich Panels from Astal Roofing Industries combine a rigid polyurethane foam core with factory-bonded steel facings into a single, pre-engineered panel that provides structure, insulation, and finish in one product – cutting construction time, eliminating on-site insulation installation entirely, and delivering consistent, measurable thermal performance from day one. The preferred specification for cold storage facilities, clean rooms, prefabricated buildings, and industrial sheds across India where thermal efficiency, installation speed, and long-term performance are all non-negotiable.

What Are PUF Sandwich Panels?

PUF Sandwich Panels – also known as polyurethane foam sandwich panels or insulated sandwich panels – are factory-manufactured composite building panels consisting of two steel facing sheets (typically PPGI or PPGL pre-painted steel) with a rigid polyurethane foam (PUF) core injected and bonded between them under controlled conditions. The result is a structurally rigid, thermally high-performing panel that functions simultaneously as the structural roof or wall element, the thermal insulation layer, and the interior and exterior finished surface – replacing what would otherwise require three separate installation operations on site.

For EPC contractors, cold storage developers, and prefabricated building procurement teams, PUF sandwich panels offer a compelling combination of speed, performance, and cost efficiency – a building envelope system that arrives on site ready to install, with no secondary insulation, no additional lining, and no multi-trade coordination required to complete the thermal shell.

Roof & Cladding Thickness Options

ROOF PANELS (30mm – 50mm )

Engineered for pitched and low-slope roof applications – providing the structural spanning capacity and thermal insulation required for industrial sheds, prefabricated buildings, and commercial facilities with moderate temperature control requirements.

CLADDING PANELS (30mm – 120mm)

A wide thickness range for wall and cladding applications – from standard industrial shed cladding at 30–50mm, to high-performance cold storage wall panels and clean room enclosures at 80–120mm where maximum thermal resistance is required.

Key Features & Technical Specifications

Polyurethane Foam Core- Industry-Leading Thermal Efficiency

Rigid PUF has one of the highest thermal resistance values per unit thickness of any commercially available insulation material – delivering superior R-values in a thinner, lighter panel compared to rockwool or EPS sandwich panels of equivalent thermal performance, which directly reduces panel weight, structural load, and material cost per square metre of insulated building envelope.

High Thermal Efficiency - Consistent Temperature Control

The continuous, void-free foam core eliminates the thermal bridging points that reduce insulation performance in systems assembled from separate components – delivering uniform thermal resistance across the full panel face and maintaining precise internal temperatures in cold storage rooms, clean rooms, and temperature-sensitive manufacturing environments with minimal energy input from refrigeration or HVAC systems.

Lightweight Yet Structurally Rigid

Despite their multi-layer construction, PUF sandwich panels are significantly lighter than equivalent-performing conventional wall and roof assemblies – reducing dead load on the primary structural frame, lowering foundation requirements, and enabling faster erection with lighter lifting equipment, which compresses the construction programme and reduces overall project cost.

Fast & Easy Installation

Factory-manufactured to precise panel dimensions with tongue-and-groove or ship-lap jointing systems – panels click together on site with minimal fitting adjustment, no secondary insulation installation, and no additional lining work required, enabling a small crew to erect large areas of insulated building envelope in a fraction of the time required by conventional construction methods.

Factory-Finished Both Faces

Both the external and internal steel facings are pre-painted in PPGI or PPGL coatings – arriving on site with a finished, hygienic interior surface and a weather-resistant exterior surface that requires no additional painting, lining, or finishing work after installation, which is particularly critical for clean room, food processing, and pharmaceutical facility applications where surface finish and hygiene standards are regulatory requirements.

Available in Custom Sizes & Colours

Manufactured to project-specific panel lengths, widths, thicknesses, and RAL colour options for both interior and exterior facings – ensuring every panel fits the structural grid precisely and the interior finish meets the hygiene, aesthetic, or regulatory specification required by the end use of the facility.

Applications

Cold Storage Facilities

The primary application for high-thickness PUF panels – providing the sustained, uniform thermal resistance required for cold rooms, freezer chambers, and refrigerated warehouse envelopes where even small thermal bridges result in significant energy cost increases and temperature compliance failures.

Clean Rooms

Factory-finished interior surfaces meet the hygiene and contamination control requirements of pharmaceutical, food processing, electronics, and medical device manufacturing clean rooms – where seamless, washable wall and ceiling panels are a regulatory necessity.

Prefabricated Buildings

The speed and simplicity of PUF panel installation makes them the specification of choice for prefabricated and modular building systems – offices, site accommodation, portable cabins, and rapidly-deployed facility expansions where construction timeline is critical.

Industrial Sheds

Used as roof and wall panels for industrial sheds and manufacturing facilities requiring thermal comfort, condensation control, and a clean interior finish – without the time and cost of installing separate insulation and lining systems after the primary structure is erected.

Why Source PUF Sandwich Panels from Astal Roofing?

At Astal Roofing Industries, PUF Sandwich Panels are manufactured at our facility in Bengaluru using continuous foam injection lines that deliver consistent core density, uniform foam distribution, and reliable face-to-core bond strength across every panel produced. Each panel is quality-checked for thickness tolerance, foam density, facing adhesion, and joint geometry before dispatch – so the panel that leaves our facility installs cleanly, performs to specification, and maintains its thermal performance across the full service life of the building.

We supply PUF sandwich panels to cold storage developers, EPC contractors, clean room builders, and prefabricated building manufacturers across India – with custom panel fabrication, colour matching, and specification support available to ensure every project receives panels that meet its exact dimensional, thermal, and finish requirements. Competitive pricing, consistent quality, and coordinated delivery alongside roofing sheets and structural accessories make Astal Roofing a preferred single-source supplier for complete building envelope procurement.