Why colour matters more in the subtropics
On the Sunshine Coast, a roof spends much of the year under intense sun. The colour you choose affects how much of that energy is absorbed by the roof and passed into the roof space. Lighter colours reflect more solar energy; darker colours absorb more. That has a direct effect on summer comfort and, for air-conditioned homes, on running costs. Combined with a roof blanket or sarking and good ceiling insulation, a lighter roof can make a noticeable difference. See energy-efficient roofing options.
Solar reflectance
Steel manufacturers publish solar reflectance values for their colour ranges, which indicate how much of the sun's energy each colour reflects. Comparing these figures is more reliable than judging by eye. Ask your roofer for the data on the colours you are considering. Tile manufacturers may provide similar information.
Glare and neighbours
Very light and unpainted metallic finishes can reflect glare toward neighbouring homes, particularly on houses that sit below yours on a slope. Some planning rules address roof reflectivity. A light-to-mid tone often balances heat performance and glare.
Matching the house
Walls and trims
Look at the roof, walls, window frames, gutters, fascia and garage door together. A colour that looks right on a small sample can look very different across a whole roof next to your walls.
House style
Traditional brick homes often suit classic tile colours or mid tones. Timber and fibro beach houses suit lighter, coastal palettes. Modern rendered homes often use greys. Consider how the roof works with the house rather than following a trend.
The street
Check what surrounds you. A roof that sits comfortably with its neighbours tends to age better in appearance.
Coastal light
Strong coastal light makes colours look lighter and brighter outdoors than they do on a showroom wall. Look at samples outside at different times of day, and drive past finished roofs in the colours you are considering.
Rules that may apply
- Estate covenants in many newer developments specify allowed roof colours or materials.
- Body corporate by-laws often control the external appearance of strata buildings.
- Planning scheme provisions may address reflectivity or character areas.
Check the paperwork for your property, and ask the body corporate or developer if you are unsure.
Tile colours
Terracotta tiles keep their colour because it is fired into the clay. Concrete tiles are coloured with a surface finish or through-colour, and their appearance can change as surfaces weather. Tile ranges offer fewer colour options than steel but suit traditional streets.
Steel colours
Pre-painted steel ranges offer a wide choice from very light to very dark. Unpainted zinc-aluminium coated steel is another option, though glare and coastal suitability need consideration.
Practical tips
- Shortlist three colours based on heat, rules and house style.
- Get physical samples and view them outside.
- Look at finished roofs nearby in each colour.
- Check gutters, fascia and trims as a set.
- Confirm availability in the coastal grade you need.
Colour and dirt on the coast
It is worth thinking about how each colour will look after a few years of coastal weather, not just on day one. Very light roofs show dirt, mould spots and leaf staining more readily, particularly under trees or in damp hinterland settings. Very dark roofs show salt deposits and dust as pale streaks. Mid tones tend to hide both. Gutters in light colours can show staining from leaves and runoff.
If your house sits under eucalypts, palms or other trees that drop a lot of material, factor in how often you will clear gutters and wash the roof. If you are close to the beach, ask the roofer how salt deposits show on the colours you are considering. A colour you are happy to live with in its weathered state is a better choice than one that only looks good freshly installed.
Related reading
See Colorbond roofing and roofing trends on the Sunshine Coast. If you are near the sea, read coastal roof materials to make sure the colour you want is available in the right grade.
General information for Sunshine Coast property owners, not advice about your particular roof. Rules, products and programs change; confirm with the authority named, or with Sunshine Coast Council or Noosa Shire Council, before acting.