Insulated patio: what it is, what it costs and who it suits (2026)
BeforeInsulated Roof PatioAn insulated patio is a roof made from sandwich panels: two steel skins around a foam core. You get a finished ceiling and far less heat coming through. It suits Australian households who want to use their alfresco through long, hot summers, with lights and a fan overhead.
BeforeInsulated Roof PatioWhat is an insulated patio made of?
The roof is a single panel that does three jobs: roof sheet, insulation and ceiling. A typical panel has a corrugated COLORBOND steel top, a fire-retardant foam core and a pre-finished steel lining underneath.
Panels come in several thicknesses. One widely used Australian range runs from 50 mm to 200 mm, and thicker panels insulate better and span further between beams.
The ceiling side is usually Surfmist or Classic Cream. You can pick a plain, modern finish or a VJ (V-joint) look that suits older homes and Queenslanders.
The frame is normally steel posts and beams, painted or powder coated to match. Panels still need some fall to shed water. The range above has a minimum pitch of 5 degrees, so most insulated patios are built with a flat, skillion or gable shape.
Pros and cons of an insulated patio roof
Pros:
- Much cooler underneath than a single steel sheet on a summer afternoon.
- Quieter in rain, because the foam core deadens the drumming.
- A finished ceiling straight away, with no exposed purlins.
- Easy to fit downlights and a ceiling fan.
- Can be tied into the house roofline for a verandah feel.
Cons:
- Costs more than a plain Colorbond sheet roof.
- Heavier, so posts, beams and fixings must be designed for it.
- Blocks all daylight, which can darken rooms next to it.
- Fewer roof colours than standard sheet.
Who is an insulated patio best for?
Insulated roofs earn their keep where summers are long and hot. Think Perth, Adelaide, Brisbane, the NSW west and any west-facing yard that bakes after lunch.
They also suit:
- Attached patios used as an everyday outdoor room.
- Homes where the patio shades windows and you want less heat reaching the house.
- Outdoor kitchens, lounges and alfresco dining areas.
- Families who want lights, a fan or a heater overhead.
In cooler southern cities, think about winter sun. Leaving a strip of clear roofing, or choosing a lighter structure, keeps living rooms brighter.
How much does an insulated patio cost?
These are our indicative installed prices for an Insulated Roof Patio, by size and state, including GST.
| Size | WA | SA | VIC | QLD | NSW | ACT | TAS | NT |
|---|---|---|---|---|---|---|---|---|
| 3 × 3 m | $11,500 to $13,500 | $11,500 to $13,500 | $12,000 to $14,000 | $12,500 to $14,500 | $13,000 to $15,500 | $13,000 to $15,500 | $13,000 to $15,000 | $14,000 to $16,000 |
| 5 × 4 m | $11,500 to $13,500 | $11,500 to $13,500 | $12,000 to $14,000 | $12,500 to $14,500 | $13,000 to $15,500 | $13,000 to $15,500 | $13,000 to $15,000 | $14,000 to $16,000 |
| 6 × 4.5 m | $15,000 to $17,500 | $15,000 to $17,500 | $15,500 to $18,500 | $16,000 to $19,000 | $17,000 to $20,000 | $17,000 to $20,000 | $16,500 to $19,500 | $18,000 to $21,000 |
Insulated Roof Patio, indicative installed prices including GST, attached, rounded. Updated 28 October 2026.
The price moves most with size, panel thickness and height (double-storey attachments cost more). Footings, access, council and engineering fees, and electrical work add to it. Treat these ranges as a guide only: a site measure and written quote from an installer sets the real price. Our insulated patio cost guide goes deeper.
Colours and options
The top skin comes in a shortlist of COLORBOND colours. One common panel range offers Surfmist, Paperbark, Classic Cream, Pale Eucalypt, Manor Red, Dune, Shale Grey, Basalt, Woodland Grey and Zincalume.
COLORBOND steel with Thermatech technology is designed to help manage heat loads together with roof insulation. Lighter roof colours are still a sensible default in hot climates.
Popular options include:
- Plain or VJ ceiling finish.
- Thicker panels for longer spans or extra insulation.
- LED downlights and a ceiling fan.
- A section of clear roofing to let light in.
- Outdoor blinds on the sunny or windy side.
For help picking a colour that suits your house, see our Colorbond colours guide.
Do you need council approval for an insulated patio?
Often, yes, but it depends on your state, your council and the design. Size, height, distance to boundaries, bushfire rating and whether the patio attaches to the house all matter.
Some small patios are exempt or can use a faster approval path. Larger or attached patios usually need a building permit and engineering. Read our council approval guide for patios and pergolas before you sign a contract.
Insulated patio vs similar styles
Insulated patio vs flat roof Colorbond patio
A flat roof Colorbond patio uses a single steel sheet. It costs less and goes up quickly, but it runs hotter and louder underneath. If you plan to sit out on summer afternoons, insulation usually pays its way.
Insulated patio vs gable patio
A gable patio has a pitched, triangle roof that lifts the ceiling and lets hot air rise. Choose a gable for height and street appeal. Choose an insulated flat or skillion roof for a cooler, cleaner ceiling at a lower price.
Still deciding? See an insulated patio on your own house in about 30 seconds with our free tool, then ask for one local quote if you want it.
Common questions
Is an insulated patio worth the extra cost?
If you will use the patio on hot afternoons, usually yes. The foam core cuts the heat coming through the roof, quietens rain and gives you a finished ceiling for lights and a fan. If the area is mostly shaded or used rarely, a plain Colorbond roof may be enough.
How thick are insulated patio roof panels?
A common Australian range runs from 50 mm to 200 mm thick. Thicker panels insulate better and can span further between beams. Your installer picks the thickness to suit the span and wind rating of your site.
How much does an insulated patio cost in Perth?
Our indicative installed price for a 6 m × 4.5 m insulated roof patio in WA is $15,000 to $17,500, including GST. Height, footings, access, council fees and electrical work can move it up or down, so a site measure sets the real price.
Can you put downlights and a ceiling fan in an insulated patio?
Yes. The panel has a finished steel ceiling, so a licensed electrician can fit downlights and a fan without lining the roof. Plan the positions before the roof goes up so cables can be run neatly.
Are insulated patios noisy in the rain?
They are much quieter than a single steel sheet. The foam core between the two steel skins deadens most of the drumming you hear under a plain metal roof.
Keep reading
Sources
- InsulRoof by Bondor (Australian Institute of Architects library)
- LYSAGHT | COLORBOND® Roofing, Guttering & Fascia
- What is COLORBOND® steel with Thermatech® technology
Prices on this page come from Backyard Mate's pricing for each state and are indicative only. Rules and products change: check with your council and installer before you build.