Insulating in 2050,differently.
Heatwaves at 50°C are no longer fiction. Tomorrow’s climate is changing the thermal equation of buildings. The R coefficient, on its own, is no longer enough.
Thirty minutes at 50°Cto understand.
Climate Sense is a rather unusual lorry. Inside, once you pass through an airlock, it is fifty degrees.
The aim for visitors: spend thirty minutes there carrying out everyday tasks, to feel in their bodies what graphs struggle to convey.
If our bodies feel thermal stress so quickly, our buildings must also be designed to limit exposure to heat.
The R coefficient is essential. But by 2050, it will no longer be enough.
The R coefficient characterises a wall’s resistance to heat flow by conduction. Without it, there is no regulatory thermal calculation.
But a rigorous formulation is essential, as it changes everything that follows:
R reduces the intensity of the heat flow, but does not act on the time dimension of the transfer.
A high R value reduces losses in winter and heat gains in summer. It acts on amplitude. Not on timing. It does not act directly on radiative exchanges.
R reduces flow by conduction, but addresses neither radiation nor the time dimension of the transfer.
The R'BULL Pro effect, visualised.
Click to compare the behaviour of a roof, with and without reflective insulation.
The three levers of summer comfort.
No modern insulation can ignore these three physical mechanisms. Each acts on a different dimension of heat.
Reduce the flow
A high thermal resistance that reduces heat flow by conduction through the wall.
When? Continuously, during the transfer.
Shift the peak
A thermal mass that delays the spread of the heat peak. It shifts it, rather than removing it.
When? Delayed, after several hours.
Reflect the energy
A low-emissivity surface that greatly limits the absorption of radiation. Acts before it enters the wall.
When? Instant, before entry.
R reduces the intensity of the flow. The time lag shifts the peak over time. The reflective layer limits part of the radiation before it is absorbed. It is this complementarity that becomes decisive as heatwaves intensify.
Not all insulation materials perform equally over time.
Glass wool
High R, but the outdoor heat peak reaches the interior quickly.
Wood fibre
The indoor peak is delayed by several hours, often to the end of the night when ventilation is possible.
The time lag acts over time, not instantly.
Air conditioning moves heat. It does not remove it.
Air conditioning extracts indoor heat and releases it outside. According to ADEME, this transfer leads to:
- → A noticeable increase in energy consumption
- → A measurable contribution to urban heat islands
- → A recurring installation and maintenance cost
The more heat you let in, the more you need air conditioning. The more you use air conditioning, the more you heat the outside air. The more the outside air heats up... it’s a vicious cycle.
The rational solution: tackle the problem at the source, rather than at the compressor.
The two indicators that always get forgotten.
When people talk about insulation, they say ‘R’. Rarely ‘emissivity’. Almost never ‘solar factor’. Yet these two parameters describe the part of the thermal equation that concerns radiation, the main heat vector in summer.
Emissivity
A material’s ability to absorb and then re-emit thermal radiation.
Solar factor
The proportion of solar energy transmitted through the wall.
R'BULL Pro:acting at the source.
Unlike conventional insulation, which slows the flow once heat has been captured, R'BULL Pro greatly limits the absorption of incident radiation. Its very low emissivity surface acts at the first stage, upstream.
Limiting radiative exchange
Between the sun-exposed roof and the living space.
Reflecting incident energy
As soon as radiation arrives, before it is absorbed by the wall.
Reducing gains at the source
Even before conventional insulation comes into play.
Three technologies, three timeframes.
The time lag delays the heat. The reflective layer acts before it enters.
One wall, three layers of protection.
The most effective approach does not pit these against each other. It combines them. Each technology addresses a different physical aspect, and layering them together covers the entire thermal spectrum.
The criterion that comes before everything else.
Beyond comfort, the primary purpose of a building has remained the same for centuries: protecting people and property.
R'BULL Pro is certified B-s1, d0 according to the AITEX report: low contribution to fire, little smoke, no flaming droplets. A fire reaction compatible with demanding configurations, subject to validation of the complete system and the requirements applicable to the project.
Combined with Euroclass A1 or A2 mineral wool, the complete system can reach particularly high levels of fire reaction, depending on the configuration chosen and its validation. It is the behaviour of complete systems in real conditions that determines the safety of a building.
The challenge for 2050is not to insulate more.It is to insulate differently.
The right strategy does not pit these solutions against each other. It coordinates them intelligently.
Ready to plan ahead for tomorrow’s climate?
Discover the R'BULL Pro range and our assessed thin reflective insulation. Technical documentation and tailored support.