Use Case
Search “coolroom panels Bunnings” and you’ll find Panelspan sandwich sheets, a handful of forum threads, and not much else. So the real question for Adelaide operators isn’t just what Bunnings stocks — it’s whether a hardware-store panel can actually build a cold room that holds temperature, passes an inspection, and lasts. Here’s the honest comparison, in plain English.
What Bunnings actually sells
Bunnings stocks Panelspan insulated sandwich panels — typically 2400 × 1200 × 50mm sheets with an EPS core and steel skins, sold singly or in 3-packs. They’re a genuine insulated panel, and fine for a shed lining, a lean-to, or a hobby project. What they are not is a coolroom system: there are no matching cam-lock joints, no floor or ceiling panels, no doors, and only one thickness. You’re buying a sheet, not a cold room.
The 30-second answer: Bunnings = one 50mm sheet, no joining hardware, no doors, no cold-room engineering. A purpose-built coolroom panel comes in 35–150mm with cam-locks, matching components, and a door — so it actually seals and holds temperature.
Bunnings Panelspan vs purpose-built coolroom panels
| Feature | Bunnings Panelspan | Purpose-built coolroom panel |
|---|---|---|
| Thickness options | 50mm only | 35 / 50 / 75 / 100 / 150mm |
| EPS R-value (approx.) | ~1.39 (50mm) | 0.96–4.0+ by thickness |
| Joining system | None — butt/glue only | Cam-lock or tongue & groove, sealed |
| Matching components | Wall sheets only | Floor, ceiling, doors, flashings, channels |
| Panel length | Fixed 2.4m | Cut-to-length (up to 6m+) |
| Best for | Shed lining, DIY lean-to | Chillers, freezers, commercial cold rooms |
The gap that matters most is the join. A cold room lives or dies on its seals — every un-sealed butt joint is a thermal bridge and a condensation point. Panelspan has no engineered joint, so you’re relying on glue and sealant, which won’t hold a freezer at −18°C. Purpose-built panels lock together with a cam mechanism that pulls the faces tight and compresses a gasket. (If you’re building either way, see our guide on how to join coolroom panels.)
When a Bunnings panel is genuinely fine
- Insulating a shed, garage, or carport roof
- A single-wall partition with no temperature target
- Small DIY projects where you’ll glue and screw, not refrigerate
When you need a real coolroom panel
- Any room running a refrigeration unit (chiller or freezer)
- Commercial kitchens, bottle shops, florists, butchers, labs
- Anything a building surveyor, insurer, or health inspector will look at
- Freezers — you’ll want 75–100mm, which Bunnings simply doesn’t carry
Adelaide tip: A 50mm panel suits a chiller at +2°C to +5°C. Drop below freezing and you want 75mm (R ~2.08) or 100mm — otherwise your compressor runs non-stop and your power bill does the talking. Match the panel to the temperature, not to what’s on the shelf.
What about price?
A single Bunnings sheet looks cheap next to a full coolroom quote — but you’re comparing a sheet to a system. Once you add joining hardware, a door, floor and ceiling panels, flashings, and the labour to make glued butt-joints airtight, a DIY Panelspan build rarely ends up cheaper than a kit that’s engineered to fit. For real numbers on what a cold room costs built properly, see our cool room cost guide for Australia.
The bottom line
Bunnings Panelspan is a decent insulated sheet for non-refrigerated jobs. For an actual cold room — one that seals, holds temperature, and survives an inspection — you need purpose-built panels with cam-lock joints, the right thickness for your target temperature, and matching doors and trims. We supply exactly that across Adelaide and Australia-wide, cut to length, with the hardware that makes it a room and not just a wall. Not sure which core to pick? Read EPS vs PIR panels next, or browse our 50mm insulated panels.
Cutting panels yourself? Our guide on how to cut coolroom panels covers the tools and tips to get clean, sealed edges.
