Roof with heat reflective paint NZ

Keep cool with Heat Reflective Paint NZ

The National Institute of Water and Atmospheric Research (NIWA) is forecasting that New Zealand will experience a hotter than usual summer in 2017. Too much heat in the workplace causes problems such as fatigue, heat cramps, concentration loss and this ultimately leads to productivity reductions. An application of heat reflective paint nz will significantly protect any structure (and the people inside) from severe heat.

This article states reasons and the most effective locations for application. Furthermore, we state products and specialists to ensure you are prepared for the heat this summer.

Top 4 reasons to apply Heat Reflective Paint

1. Lower energy costs

Heat reflective paint reduces indoor temperature which subsequently leads to minimizing the need to use air conditioning.

2. Increased comfort

The World Health Organisation recommends 24°C as the maximum temperature for working in comfort. Therefore, applying heat reflective paint lowers room temperature and should keep comfort at an acceptable level.

3. Longer lasting building

The polymeric binder and other additives such as asphalt and pure aluminium not only provide a reflective coating but prevent thermal shock and keep the condition of the building intact in the long term.

4. Environmentally beneficial

Reduces trapped heat in the atmosphere by reflecting solar rays back into the sky, which can delay climate change.

Heat Reflective Paint: Where to coat for maximum protection

Heat Reflective Paint NZ diagram

Heat penetrates the roof and makes the room hotter


At first glance, heat reflective paint looks like regular house paint. Its application takes into account the most vulnerable area for solar radiation – the roof.

It is suitable for almost any roof and is typically in a light shade to prevent absorption as much as possible.

Heat reflective paints fall into the category of single ply or liquid applied. Liquid applied products include white paints, acrylic paints, polyurethane, or elastomeric.



Types of roofs and the appropriate coating

Single-ply membranes Pre-fabricated sheets rolled onto the roof and fastened mechanically, chemically, or held in place with ballast. White membranes reflect sunlight well. Black membranes require different formulation
Built-up roofs Base sheet, fabric reinforcement layers, and (typically) a dark protective surface layer Mineral surfaced
Modified bitumen sheet membranes Plastic or rubber material with reinforcing fabrics, and are surfaced with mineral granules or a smooth finish Factory coated
Shingle roofs Roof with overlapping panels made from a variety of materials such as fiberglass asphalt, wood, polymers, or metals. With specially coated granules that provide better solar reflectance
Tile roofs Can be made of clay, slate, or concrete. White paints or acrylic
Metal roofs Can be metallic or granular coated Can be factory coated or liquid applied paint on-site

What is the best Heat Reflective Paint NZ

Heat Reflective Paint products differ in colour and application. The best paint, however, depends on a factor referred to as Solar Reflective Index (SRI). Basically, this index measures the effectiveness of heat reflective paint. SRI is a numerical expression of a coating’s overall ability to reject solar heat.

SRI calculation for Heat Reflective Paints

SRI is a combination of how much sunlight a surface reflects and how efficiently a surface cools itself.

There are two main products in New Zealand which have high SRI values, namely;

  1. NXT Cool Zone: 91%
  2. Resene CoolColour: 29%

Specialists in Heat Reflective Paint in New Zealand

Resene Manufacturer 32 Vogel St, Naenae, Lower Hutt 5011
Nutech Manufacturer 35F Neilpark Dr, East Tamaki, Auckland 2013
Roofing Industries Manufacturer 5 John Glenn Ave, Rosedale, North Harbour 0632