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What are Resene CoolColour paints?

Posted by Wall Treats on October 25, 2018

When you commit to painting your home you want the finish to look as good as possible, for as long as possible. This traditionally meant that dark colours were a no-no, however with advances in paint technology, such as Resene’s CoolColour range, dark colours can now be included in your colour scheme.

As professional exterior painters, we have worked with many different types of paint. We know you need to understand what Resene CoolColour paint is, and how it works, so you can decide if it might be right for your painting project.


What is Light Reflectance Value?

Understanding Light Reflectance Value (LRV) is important when you are selecting new exterior paint colours for your home and should be a key consideration.

LRV measures the percentage of light and heat a paint colour reflects, and is measured on a scale that ranges from zero (absolute black, absorbing all light and heat) to 100 percent (pure white, reflecting all light and heat).

On painted surfaces, a key factor contributing to the longevity of the paint finish is how much heat the paint colour is likely to absorb. Heat places stress on the paint and the substrate and darker colours will absorb more heat than lighter colours.

As well as having an impact on how long the paint finish lasts, it also affects the temperature inside the building.


How does Resene CoolColour work?

Resene CoolColour paints have a special pigment technology which enables the paint to reflect more heat, so that it doesn’t get as hot as a standard colour would.  The paint still absorbs light in the same way, so there is no change to the colour. 


Is Resene CoolColour available in all Resene paint colours?

No it isn’t, so if our clients want a dark paint colour we encourage them to first ascertain the paint colours available in Resene’s CoolColour range. 


Is there a special process for using Resene CoolColour paint?

Yes. The Resene CoolColour technology reduces how much heat the dark paint colour absorbs, but it does not eliminate the absorption of heat. For the Resene CoolColour paint to function to its full effect, there must be a light coloured paint beneath the two topcoats of Resene CoolColour paint. This light coloured layer will reflect the heat. 


What does your exterior painter need to do to best use Resene CoolColour?

If …

Then …

You already have a light coloured house that you wish to turn dark

Two topcoats of Resene CoolColour paint is usually all that is needed. 

You already have a dark coloured house that you wish to retain dark

A coat of white undercoat before the two topcoats of Resene CoolColour paint is needed. 


A final note

From a professional painter’s perspective, dark colours look great, however, we would caution against extensive use on exterior surfaces. 

Resene CoolColour technology has opened new possibilities in colour choice, but it is important to remember that heat absorption is only one of a myriad of factors impacting the longevity of a paint finish. The condition of the underlying substrate, the adequacy of the preparation work, and the expertise of the painting contractors are all important elements that influence the impact of Resene CoolColour paint on your project. 

If are planning a painting project, and want to talk to award winning Auckland Master Painters about your paint options, call Wall Treats.

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