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Achieving energy savings for households is crucial nowadays. More and more people are paying attention to the impact of their homes on the environment and reducing high energy bills.

Fortunately, innovative and environmentally friendly solutions have emerged in recent years to achieve the goal of saving on consumption. Unlike traditional thermal insulation, which is an invasive and very costly intervention, cork-based products such as our mortars and paints can actually offer improved habitability at reduced utility bills.

Today, we want to talk about heat-reflecting paint, what it is and how it works, focusing on our cork-based products. If you are wondering how to save money on your home energy bill without spending a fortune, read on to the end.


Heat-reflecting paints: what they are and how they work

Walls treated with heat-reflecting paints act as thermal shields, diverting heat rather than allowing it to dissipate through the wall structure. These paints’ particularity lies in their ability to reflect directly towards the heat source, thus distinguishing them from traditional insulators that focus on reducing thermal conduction. Composed of heat-reflecting micro- and nanotechnology particles, these paints can be used for interior and exterior walls.

The main advantages of this paint lie in its increased thermal efficiency, resulting in reduced energy expenditure. Its easy application, similar to regular paint with a brush, roller or spray gun, makes it an affordable solution without necessarily having to consider installing a thermal coat.


Cork-based heat-reflecting paints

Cork-based heat-reflecting paints represent an innovative solution in the field of energy-efficient paints. These products combine the insulating properties of cork with the reflective capacity of heat-reflecting particles, offering numerous advantages for improving the thermal efficiency of buildings without costly and invasive intervention.

The composition of these paints is the result of advanced research in the field of nanotechnology and materials engineering. They usually include heat-reflecting micro and nanoparticles, cork extracts or cork-based additives that give them unique characteristics. Heat-reflecting particles are designed to intercept and reflect the sun’s rays, helping to keep treated surfaces cooler.


Our proposals to combat climate change

Cork-based heat-reflecting paints represent a significant step in the fight against global warming and an expression of the constant search for innovative solutions.

At Diasen, we specialise in producing biomass and paints for architecture and green buildings. Our Thermikoat line is based on thermal and reflective paints. Thanks to these products, we received the prestigious Smau 2023 Innovation Award, which recognises companies contributing to innovation and sustainable growth.

The Thermikoat line is formulation results from a commitment to combat ‘global warming’ and improve living comfort by reducing energy consumption. An approach that goes beyond mere research and development, involving the entire organisation in a shared vision centred on the well-being of people and the sustainability of solutions.


The advantages of cork-based heat-reflecting paints

We often talk about cork and the magic it can do in the green building sector. It is a natural and environmentally friendly material extracted from imposing zero-kilometre oaks in our wonderful Mediterranean. The cork is harvested every ten years by extracting the bark and follows a production process free of chemicals and substances harmful to people or the environment.

Cork is known for its natural insulating properties, helping to limit temperature variations within rooms. Its porous structure traps air and allows the walls to ‘breathe’, counteracting the formation of humidity and mould, which are very harmful to tenants.

Cork is a renewable and biodegradable material, giving cork-based paints an eco-friendly character. These products do not contain harmful solvents and do not release cement substances into the environment, allowing residents to experience unparalleled comfort.

These paints reflect the sun’s rays and limit heat absorption from treated surfaces. The combination of heat-reflecting micro and nanoparticles with the insulating attributes of cork creates a barrier effect that significantly reduces heat transmission through walls. This decreases building surface temperatures, contributing to greater thermal comfort and reduced dependence on cooling systems.

Cork-based heat-reflecting paints are widely used in situations where a traditional thermal coat may not be feasible.



Cork-based heat-reflecting paints are an innovative bulwark against global warming and a tangible contribution to buildings’ sustainability and energy efficiency. The combination of heat-reflecting micro and nanoparticles and cork’s natural properties offers a versatile and high-performance option.

What distinguishes Diasen’s heat-reflecting is the continuous research and development that has led to the creation of products such as the Thermikoat line or our Alfareflex. By reflecting more than 90 percent of the sun’s rays, these paints actively contribute to combating climate change and offer an innovative vision of living comfort.

Diasen’s recent recognition with the Smau 2023 Innovation Award confirms our ongoing commitment to creating advanced solutions that integrate natural materials such as cork to ensure performance, comfort and sustainability. We are proud to be at the forefront of offering alternatives that improve people’s well-being and contribute to the regeneration of the economy and innovation in the building sector.