Yecla (Murcia, Spain), 4 November 2026. The cleanest energy is the energy that is never used. With that in mind, Graphenano SmartMaterials, the Graphenano Group’s construction materials subsidiary, has begun selling FloorGraphene in twelve European countries: the UK, Portugal, France, the Netherlands, Germany, Switzerland, Austria, Poland, Sweden, Norway, Denmark and Finland. It is a graphene-based liquid additive for underfloor heating screed that cuts annual heating and cooling energy use by up to 30%, and CO₂ emissions with it.
The bottleneck in underfloor heating
All the heat a heat pump produces has to pass through the screed over the pipes before it reaches the floor finish. If that screed is a poor conductor, the system needs hotter water and longer running hours to deliver the same comfort. FloorGraphene tackles that bottleneck. In the company’s reference tests, conventional cement screed conducts 0.88 W/m·K; with FloorGraphene it reaches 1.5 with limestone aggregate and 2.0 with siliceous aggregate.
Graphenano SmartMaterials reference tests.
The gain is twofold. Heat reaches the room sooner, and the system can run at a lower flow temperature, which is exactly where a heat pump is most efficient. Fewer running hours and better efficiency mean less electricity: up to 30% less a year in the Madrid case. For a 120 m² home in Madrid, the FloorGraphene savings calculator estimates around 2,000 kWh and 800 kg of CO₂ less a year (Spanish case study).
Less energy, lower emissions
Every kilowatt-hour that is not used is CO₂ that is not emitted. In the same case study, annual emissions from heating and cooling also fall by up to 30%. FloorGraphene is a passive improvement: it is part of the screed itself, uses no energy and needs no maintenance.
Buildings account for around 40% of the energy used in the EU (European Commission) and a third of its energy-related emissions (European Environment Agency, 2023). In the EU, Directive (EU) 2024/1275 requires zero-emission new buildings from 2030 and a 16% cut in primary energy use across the housing stock by 2030. Heat pumps with low-temperature underfloor heating are one of the main routes there, and FloorGraphene gets more out of them without changing the installation.
No change on site
FloorGraphene is dosed at 1.5 kg per cubic metre, at the batching plant or on site, straight into the truck mixer. It does not change the consistency or appearance of the fresh screed, it is laid with the same equipment, and neither the heating installation nor the screed depth has to change. It also improves the strength and durability of the screed. With siliceous aggregate it conducts better than anhydrite, at a lower installation cost. More in our guide Underfloor heating screed.
“The cheapest and cleanest way to save energy in a home is to make the system it already has work better. With FloorGraphene, the underfloor heating transfers heat more effectively and the heat pump uses less: up to 30% lower energy use and emissions, with nothing changed on site.”
FloorGraphene is made in Yecla (Murcia, Spain) with graphene manufactured in-house by the Graphenano Group.
