Does house colour have much effect inside temp?

[russall]

Title says it all really...

I have a flat roofed single story house in Brisbane, its approx 50 years old, I have insulated the roof with batts and the walls hollow, with Villaboard on the inside and I think weatherboards <wooden> on the outside.

It's currently white and I would love to paint it Colourbond Jasper which is a basically a light chocolate colour.
Mr Mitre 10 told me the change of the house colour would not have a huge impact in inside temp. Is that true? I'd love to think so, but my gut feeling is says hotbox...

Thanks,

[journeyman Mick]

Mr Mitre 10 is wrong. A white roof will be measurably cooler than a light brown one.

Mick

[russall]

Thanks, I should have mentioned, the roof if Zincalume and its the walls I'm looking to paint.

[Cliff Rogers]

You could use Ceramitec paint.

Check it out here (http://www.ceramitecpaints.com.au/).

[Colin Howkins]

Your gut feel is correct, as is Journeyman Mick. Also worth considering is that lighter coloured paints will last longer than a dark coloured one.

Case in point. My neighbour and I get our houses painted at the same time by the same painter. He likes dark colours we use an off white. Both houses were painted about 8 years ago, just repainted this year. The neighbours place was a complete sand down, set him back about $12000. Our place washed down, sanded in parts cost $5500, both houses similar in size and structure. The only difference the paint colour. The darker colours heat up more and its the heat that does the damage to paint:o

Colin Howkins
Graceville. Qld

[Wind_dancer]

It's logical that a dark colour will to some extent make your house hotter - pale colours repel heat dark colours absorb. This for example, very much applies to clothing, so why not other mediums.