Overview
The 50mm EPS cool room roof panel (4.8m) is our most popular roofing length — long enough to span most commercial cool room roof bays without a mid-span join. The 16 kg/m³ EPS core delivers R ~1.19 m²K/W, reducing heat transfer through the roof and lowering the refrigeration load. At 1,000mm cover width, four panels close a 4m-wide roof in a single layer with no off-cuts.
Key Features
- Most popular cool room roof length: 4.8m spans the majority of commercial cool room widths in a single run.
- R ~1.19 m²K/W: 50mm EPS core keeps internal temperatures stable and reduces refrigeration running costs.
- 1,000mm cover width: 4 panels = 4m coverage, 5 panels = 5m — simple, waste-free planning.
- Flat sandwich profile: installs flush — no corrugations, no exposed fasteners along the span.
- 0.45mm steel skins: corrosion-resistant finish, food-safe for commercial environments.
Specifications
- Thickness: 50mm
- Length: 4.8m
- 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: EPSROOF4850
- Application: Roof panel
Recommended Uses
- Commercial cool room and walk-in freezer roofs
- Cold storage facility roof panels
- Container home and granny flat roofing
- Modular and prefab building roof panels
- Covered industrial and workshop roofing
The Right Length for Most Cool Room Roofs
Cool rooms built to standard commercial dimensions (3m–4.5m wide) are typically spanned cleanly by 4.8m panels, eliminating mid-roof joins that can become thermal weak points. Pair with our 75mm EPS wall panels for a complete cool room shell. Need longer spans? See our 6m roofing panel.
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
Why is 4.8m the most popular cool room roof panel length?
Most commercial cool rooms are 3m to 4.5m wide internally. A 4.8m panel spans these widths with a small overhang allowance, eliminating mid-roof joins. Fewer joins means a more airtight roof and less risk of thermal bridging.
What cool room sizes does a 4.8m panel suit?
4.8m panels are ideal for cool rooms up to about 4.5m internal width. For wider rooms, panels can be laid lengthways or our 6m panels can be used.
Can I use these for a granny flat or container home roof?
Yes — EPS sandwich panels are increasingly used in modular and container home builds as a combined roof/ceiling panel. The insulation is built in, reducing the need for a separate ceiling lining in many applications.
What is the cover width?
1,000mm per panel. For a 4m wide roof bay you need 4 panels; for 5m you need 5 panels, with minor trim adjustments at edges.
Do you offer delivery for 4.8m roofing panels?
Yes — we deliver across Adelaide Metro and SA. Contact us for a delivery quote based on your quantity and location.
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