Roof Insulation Perth - Ceiling Batts & Sarking Installation

We primarily install Bradford Gold glasswool ceiling batts - available in R4.0, R5.0, R6.0, and R7.0 - as our standard ceiling and roof insulation product. For new builds or full roof replacements, we also install sarking (reflective foil underlay), which sits between the rafters and roof cladding to reflect radiant heat before it enters your roof cavity. Bradford Gold is our recommendation for most Perth homes: it's durable, non-combustible, and performs consistently in Perth's Climate Zone 5 heat. As a Bradford-approved installer, we stock and supply directly.

Yes - and Perth's climate makes it one of the highest-return home improvements you can make. Perth roof cavities regularly reach 60–70°C in summer, turning your ceiling into a radiant heat source that your air conditioner has to fight against all day. According to the Australian Government's energy.gov.au, quality insulation reduces average home heating and cooling costs by around 30%, with most installations paying for themselves within 3–5 years through lower energy bills. On top of that, Perth's average temperature has risen 4°C since 1910 (Bureau of Meteorology), meaning an uninsulated home is only going to get harder and more expensive to keep comfortable.

Most roof insulation products last between 20 to 50 years, depending on the material and installation. We only use high-quality, durable insulation that’s built to last.

In most cases, we can complete the installation in one day, depending on the size and accessibility of your roof space.

In most Perth homes, yes -  noticeably. Bradford Gold at R5.0 or R6.0 creates a thermal barrier that significantly reduces how hard your air conditioner or reverse cycle system has to work during summer. Most EIS customers report a clear difference in how quickly their home reaches temperature after we install. The Australian Government estimates insulation saves around 30% on heating and cooling costs on average - though the exact saving depends on your home's size, existing insulation, and how it's used. We're happy to give you a realistic assessment at quote stage based on your specific home.

Not at all. Our team works efficiently and cleanly so you can go about your day while we complete the installation with minimal disruption.

Yes. Sarking is a reflective foil underlay installed between your roof rafters and roof cladding (tiles or Colorbond). It works differently from bulk insulation - rather than slowing heat transfer, it reflects radiant heat away before it enters the roof cavity. In Perth's intense summer sun, sarking and ceiling batts used together perform significantly better than batts alone. Sarking is most practical during new builds or when a full roof replacement is underway. If you're just topping up insulation in an existing home with intact roofing, ceiling batts alone are the right approach. We'll advise which combination suits your situation at inspection.

Under the National Construction Code (NCC 2022), Perth homes in Climate Zone 5 require a minimum of R4.1 for ceilings. However, EIS recommends R5.0 as a practical minimum for existing homes, and R6.0 for new builds or full re-insulation projects - the additional cost over R4.1 is small, and the performance difference in a Perth summer is meaningful. If your home already has some insulation, we'll assess the existing R-value at inspection and recommend whether a top-up or full replacement is the right call.