R7.0 ceiling insulation

Is R7.0 Ceiling Insulation Right for a 7-Star Home?

R7.0 is our highest-rated ceiling insulation material, built specifically for 7-Star energy ratings and homes that need to meet a genuinely demanding efficiency target — not just an everyday comfort upgrade. It's an insulation solution best suited to architect-designed builds, alpine and high-altitude regions, and any home where the brief calls for maximum thermal performance rather than a standard, cost-effective solution. For most Australian homes, a lower R-Value already covers what's needed, so it's worth confirming your actual star rating or climate zone requirement before choosing the top tier.

R7.0 Insulation Batts We Stock

Three major brands currently manufacture R7.0-rated ceiling insulation batts in Australia, and thickness varies noticeably between them — generally somewhere between 280mm and 330mm depending on the brand and material density:

• Knauf Earthwool R7.0 — a low allergen glasswool option, among the thickest available at this R-Value.
• Pink Batts R7.0 — Fletcher Insulation's glasswool option, slightly slimmer in profile than some competing brands.
• Bradford Gold Hi-Performance R7.0 — manufactured to the highest Australian insulation standards, with a year product performance warranty on select lines.

Because the thickness gap between brands is meaningful at this R-Value, it's worth checking your roof cavity clearance against the specific product's thickness before ordering, rather than assuming every R7.0 batt will fit the same space.

Is R7.0 Ceiling Insulation Fire Safe?

Modern glasswool insulation, including Knauf Earthwool Insulation and most other R7.0 products on the market, is classified as non-combustible under standards such as ASTM E176 — meaning the material itself will not ignite or actively contribute to a fire spreading through a building. It's worth being clear on what that does and doesn't mean: non-combustible isn't the same as fire-rated or fireproof. Glasswool doesn't burn, but it also isn't designed to hold back flames the way a purpose-built fire-rated barrier is, so it shouldn't be treated as a substitute for proper fire-safety measures like clearances around flues, downlights, and other heat sources. A qualified installer will know the correct clearance distances for your specific ceiling and fittings.

Where R7.0 Makes Sense in Australia

R7.0 tends to earn its cost in the cooler southern parts of the country — Melbourne, Sydney, Adelaide, Hobart, and similarly cold-climate regions — where genuinely reducing heat transfer through the ceiling in winter has a real, ongoing effect on energy bills. In warmer states, the same investment often makes more sense at a lower R-Value, since the marginal benefit of going all the way to R7.0 shrinks once the climate isn't demanding it.

How R7.0 Supports Home's Comfort and Energy Efficiency

Beyond the headline R-Value, R7.0 batts help keep a home's comfort more stable through both winter and summer, easing the load on heating and cooling systems and contributing to genuine energy savings over time. For homes already committed to an efficient home design — good glazing, sealing, and Wall Insulation or Wall Batts through the walls — R7.0 rounds out the building envelope and can meaningfully reduce the greenhouse gas emissions tied to a household's heating and cooling use.

Ordering R7.0 Insulation From No Gap Insulation

Prices below are listed per m2 inc. GST, with flat rate shipping Australia-wide and standard dispatch within a few business days. We offer a range of payment options and payment methods at checkout for your convenience, and our team is on hand by phone or email address if you have questions before you buy. If your project plans change after ordering, our cancellation policy is there to give you peace of mind.

Why Buy R7.0 Ceiling Insulation From No Gap Insulation?

We stock a wide range of genuine R7.0 products from Australia's leading manufacturers, tested to the highest Australian insulation standards, with fast delivery and real product expertise. If you're unsure whether R7.0 is genuinely the right call for your home, our team can help you confirm it before you buy — and if a lower R-Value suits your climate better, we'll tell you that too.