Overview
The 50mm EPS insulated roofing panel (3.6m) is a lightweight, flat-profile sandwich panel suited for cool room roofs, container homes, granny flats and modular structures. With an EPS core rated at R ~1.19 m²K/W and 0.45mm steel skins on both faces, it provides solid thermal separation without the bulk or cost of heavier panel types. The 3.6m length covers short-span roof bays cleanly with minimal cutting.
Key Features
- Cool room roof rated: 50mm EPS maintains consistent internal temperatures for commercial cool rooms and chillers.
- Lightweight flat-profile: EPS sandwich construction — easier to handle and install than corrugated steel roofing panels.
- 1,000mm cover width: plan roof bays in 1m increments for clean, efficient coverage.
- 0.45mm steel skins: durable, weather-resistant finish on both faces.
- 3.6m length: suited to short bays, patios, container ends and cool room roof spans.
Specifications
- Thickness: 50mm
- Length: 3.6m
- Cover Width: 1,000mm
- Core: Expanded Polystyrene (EPS), 16 kg/m³
- Skins: 0.45mm steel (both faces)
- R-Value: ~1.19 m²K/W
- Panel Type: Flat sandwich — roof/ceiling
- SKU: EPSROOF3650
- Application: Roof panel
Recommended Uses
- Cool room and cold storage roof panels
- Container home and modular building roofs
- Granny flat and studio roof panels
- Patio and outdoor structure roofing
- Industrial and agricultural shed roofing
EPS Roofing — Not Colorbond
Unlike Colorbond corrugated roofing, these are flat EPS sandwich panels — the same technology used in cool room construction and SIP building systems. They provide thermal insulation built into the panel, making them ideal wherever you need a roof that also works as an insulated ceiling. Browse our full roofing panel range for 4.8m and 6m lengths.
Installation Notes
- Panels lay perpendicular to purlins; fix through top skin into purlin with self-drilling screws.
- Apply butyl tape or foam sealant at all end laps and panel side joints before closing.
- Use ridge cap flashing at the apex and eave trim at the lower edge.
- Minimum roof pitch: typically 2° for flat EPS sandwich roofing panels.
📄 Download EPS Installation Guide (PDF)
FAQs
What is the R-value of the 50mm EPS roofing panel?
R ~1.19 m²K/W. This makes the 50mm panel suitable for cool rooms and structures where moderate thermal resistance is required. For higher insulation performance, consider 75mm or 100mm EPS panels.
What is the cover width?
1,000mm per panel. Plan your roof bay width in 1m multiples and add overlap allowance at the eave and ridge as required by your design.
Can these panels be used for a cool room roof?
Yes — this is one of the primary applications. The EPS core prevents heat transfer through the roof panel, helping maintain target temperatures inside the cool room with less refrigeration load.
How do EPS sandwich panels differ from Colorbond roofing?
Colorbond corrugated panels are single-skin steel with no built-in insulation. EPS sandwich panels have steel skins on both sides with an EPS foam core — providing structural rigidity, thermal insulation, and weather resistance in one panel.
Do you stock 3.6m roofing panels in Adelaide?
Yes — contact us to confirm current availability and arrange pickup or delivery across SA.
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