Overview
The 75mm EPS coolroom panel (2.4m length, Z-Lock join) is Cool Room Master’s most popular freezer-grade wall panel. With a 16 kg/m³ EPS core and 0.45mm steel skins, it delivers R-value ~1.9 m²K/W — the right choice for cool rooms, freezers and sub-zero storage down to −18°C. The precision Z-Lock tongue-and-groove join snaps panels together in minutes with no special tools.
Key Features
- Freezer-grade thickness: 75mm EPS core rated for −18°C sub-zero storage.
- Z-Lock join: tongue-and-groove system — fast assembly, airtight seal, clean finish.
- 1,150mm cover width: standard cover for efficient floor-to-ceiling runs.
- Food-safe steel skins: 0.45mm Colorbond-compatible finish, easy to clean.
- Adelaide supplier: local stock, fast delivery across SA — no long wait times.
Specifications
- Thickness: 75mm
- Length: 2.4m
- Cover Width: 1,150mm
- Core: Expanded Polystyrene (EPS), 16 kg/m³
- Skins: 0.45mm steel
- R-Value: ~1.9 m²K/W
- Join System: Z-Lock tongue-and-groove
- Application: Wall panel
- SKU: EPSSZZ2475
- Temperature Range: 0°C to −18°C
Recommended Uses
- Commercial cool rooms and walk-in freezers
- Sub-zero and deep-freeze storage rooms
- Food processing, butcheries, bakeries and hospitality kitchens
- Pharmaceutical cold storage
- DIY coolroom builds — all panel sizes Z-Lock compatible
Why Buy Direct from Cool Room Master?
Cool Room Master stocks EPS coolroom panels in Adelaide and sells direct — no distributor markup. Mix panel lengths across our full 75mm range (2.4m to 6m) to minimise waste. Cut-to-length available on request. Same-week dispatch for stocked sizes.
Installation Notes
- Ensure substrate is plumb before starting the first panel run.
- Engage Z-Lock fully along each run — a rubber mallet helps seat tight joins.
- Seal all junctions (corners, floor/ceiling) with closed-cell foam tape for airtightness.
- Use cool room rated trims and fasteners at perimeter.
FAQs
Is 75mm EPS enough for a freezer room?
75mm EPS (R ~1.9) works well for cool rooms and light freezers down to −18°C. For deep-freeze below −18°C or high-ambient environments, we recommend 100mm+ or PIR panels. Contact us for a free thickness recommendation.
What does Z-Lock mean?
Z-Lock is a tongue-and-groove join profile machined into each panel edge. It interlocks adjacent panels without exposed fasteners — giving a tight thermal seal and a flat, clean internal wall surface.
What is the cover width of this panel?
1,150mm per panel. Plan your room perimeter in 1,150mm increments and add corner returns. We can supply cut-to-length panels for non-standard dimensions.
Do you deliver 75mm coolroom panels in Adelaide?
Yes — we deliver across Adelaide Metro and regional SA. Same-week delivery available for stocked lengths. Contact us for a delivery quote.
Can I mix 2.4m and other lengths on one project?
Yes. All panels in our 75mm Z-Lock range share the same profile and cover width, so you can combine 2.4m, 2.7m, 3m and longer panels on the same build without adaptation.
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