Make your shed usable year-round with shed insulation.
Add comfort, condensation control and practical thermal protection to your shed build.
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Shed Insulation Options
Most people think insulation is just about keeping a shed cooler in summer or warmer in winter.
But here is what we have learned from thousands of projects: the right insulation solution can transform how you use your new steel building year-round.
Without insulation, a shed can often become unbearable by 10 am in an Aussie summer and dripping with condensation in winter.
Add proper insulation, and you have a comfortable year-round workshop, drip-proof storage area, or reliable man cave that works in any season.
We recommend shed insulation for four main reasons:
Temperature control: Quality reflective insulation like Polyair or ThermalFlex reflects up to 95% of radiant heat, making your shed more comfortable in summer. In winter, it helps prevent heat loss.
Condensation protection: This is the hidden benefit most people do not consider. Insulation systems like Anticon or ThermalFlex minimise moisture build-up and dripping ceilings that can damage stored equipment, vehicles and the shed structure itself.
Bushfire compliance: If your property is in a bushfire-prone area, your shed may need to meet specific Bushfire Attack Level requirements. Several products are specifically designed to meet AS 3959 standards for ember attack protection.
Safety: When adding skylights to a commercial or residential building, safety mesh must be installed while trades are working on your roof. This is a mandatory fall protection system that becomes a permanent safety feature.
Our most popular shed insulation types
| Product | Type | Best used for | Notes |
|---|---|---|---|
| Polyair Performax XHD | Reflective Insulation (Extra Heavy Duty) | Boosts thermal performance, acts as a secondary protective skin for walls and roofs, and incorporates a foam core for enhanced thermal properties. | Reflects up to 95% of radiant heat. Available in nominal thicknesses of 4.0 mm and 8.8 mm. |
| Polyair Unicell | Reflective Insulation & Sarking (Extra Heavy Duty) | High-grade, commercial-grade reflective insulation designed specifically for Australian sheds, maximising year-round comfort. | Reflects up to 95% of the sun's radiant heat. Keeps your shed cooler on hot days and warmer on cold nights. |
| ThermalFlex 4 | Reflective Insulation, Vapour Barrier, and Radiant Barrier (Extra Heavy Duty) | Provides high thermal performance, helps prevent condensation, and acts as a water barrier. Suitable for bushfire-prone areas. | Material thermal resistance R0.11. Low flammability, suitable for BALs up to LOW-FZ. Nominal thickness 4.0 mm. |
| ThermalFlex 8 | Thermal Break Insulation (Extra Heavy Duty) | Meets NCC requirements for an R0.2 thermal break, minimising condensation and reducing thermal bridging in steel construction. | Material thermal resistance R0.2 includes a 150mm overlap piece to minimise wastage and reduce the need for taping joins. |
| Bradford Anticon | Combined Insulation Blanket and Foil | Used primarily under metal roofs to control heat transfer, reduce rain noise, and reduce the risk of condensation formation. | Glasswool composition allows use in BAL roofing systems up to BAL-40. Available in R1.3 and R1.8 variants. |
| Thermoseal ResiWrap | Wall Wrap & Vapour Barrier (Extra Heavy Duty) | An extra tough weather barrier that defends against rain-related water damage, ideal for high wind and harsh climate zones. | Classified as a Class 1 vapour barrier and water barrier. Suitable for bushfire-prone regions BAL 12.5-FZ. |
| Kingspan Ausmesh | Roof Safety Mesh | Serves as the primary means for fall protection when working at heights and supports roof underpurlins and insulation. | Constructed of galvanised steel wire and compliant with AS/NZS 4389:2015. |
| 493 Reinforced Foil Tape | Accessory | Recommended for sealing overlaps, discontinuities and penetrations in reflective insulation products. | Available in 48mm and 72mm widths. |
