43 %
Versus an uninsulated reference house.
Annual energy saving
Thermal insulation, applied like paint
Paint-like application, nanotechnology thermal insulation coating.
GWR NANO INSULATION® is a liquid, site-tintable thermal insulation coating. Its thermal performance is delivered by vacuum-filled glass-ceramic microspheres uniformly dispersed within a polymer binder. Independent, accredited TÜV SÜD testing verifies a 43% annual energy saving.
Climate imperative
Embodied carbon is an increasingly decisive factor in the built environment's decarbonisation pathway.
37% Share of global energy-related CO₂ emissions produced by the built environment (IEA, 2023)
75% Share of EU buildings rated energy-inefficient (European Commission)
< 1% Annual energy renovation rate across the EU building stock
Buildings are responsible for approximately 37% of global energy-related CO₂ emissions - 28% operational, 11% embodied (IEA, 2023). Embodied carbon covers the total CO₂-equivalent released across the manufacture, transport, installation, maintenance and end-of-life disposal of building materials - a category that operational energy efficiency programmes, and most building energy certificates, do not address. As building energy standards tighten and operational carbon falls, the embodied share rises proportionally: for new buildings, half of future CO₂ emissions will come from embodied carbon, half from operations (Dodge World Green Building Trends Report, 2021). The share is highest precisely where operational demand has already been minimised.
The regulatory framework has formalised this relationship. The EU Taxonomy and the Magyar Nemzeti Bank (MNB) green financing programme treat Life Cycle Assessment (LCA) and Global Warming Potential (GWP) calculation as mandatory requirements; Environmental Product Declaration (EPD)-based embodied carbon data is increasingly a condition of project financing. The most pressing embodied carbon challenge lies in the existing stock: two-thirds of the 2050 European building stock has already been built, and the annual renovation rate remains below 1%. The EU Renovation Wave programme aims to double that rate - but a technological and economic gap persists between policy ambition and deliverable solutions.
GWR NANO INSULATION® is a building insulation solution designed for the energy retrofit and renovation constraints of the existing building stock. Its liquid application, 1 mm dry-film working thickness and typically scaffold-free delivery involve significantly less material input than conventional EPS-based insulation systems. The TÜV SÜD-verified 43% annual energy saving directly improves the building's energy efficiency and reduces its operational carbon - reproducible performance, verified by accredited laboratory testing under the EN ISO/IEC 17025 framework. Against a 10 cm EPS-insulated reference house the same testing recorded 32% in summer and 9.5% in winter.
Applied like paint. Certified thermal performance.
- 01
Cost-effective solution
No structural modification, mechanical anchoring system or additional structural load is required; the 1 mm dry-film coating is applied directly onto the existing substrate, without demolition, surface restoration or long construction downtime on site.
- 02
Fast application
Applied by airless spray, typically without scaffolding or specialist access equipment on low and medium-height buildings; the complete facade of an average-sized, single-storey family home can be coated within 3 working days by a 3-person crew.
- 03
20-year workmanship warranty
The contracting applicator provides a 20-year workmanship warranty under the individual works contract; its scope is engagement-specific, determined by the contracting parties within the framework of the national construction law of the project jurisdiction.
Real measurements - real results
Energy savings measured under TÜV SÜD test house conditions.
32 %
Versus a 10 cm EPS-insulated reference house.
Summer saving
9.5 %
Versus a 10 cm EPS-insulated reference house.
Winter saving
Product properties
A single coating, specified everywhere it has to perform.
Excellent adhesion
Bonds to metal, concrete, brick, wood, plastic, glass and plasterboard without a primer coat - broad substrate compatibility across complex building assemblies. Pull-off adhesion to the substrate measures 0.2–0.8 MPa under DIN EN ISO 4624.
Flexible and durable
The coating flexibly follows substrate thermal and mechanical deformation without cracking - its impact resistance and layer integrity are maintained throughout the building structure's design life. Impact resistance is 2 Nm.
Thermal-bridge-free
Applied to window and door frame junctions, it reduces linear thermal bridge effect, equalises internal surface temperature and mitigates condensation risk. The 1 mm dry layer carries a thermal resistance of R = 4.545 m²K/W.
Vapour-permeable
Maintains substrate vapour diffusion capacity across the entire treated surface - preventing surface condensation, moisture accumulation and microbial growth. Water vapour transmission is 40 mg/m²/day, an Sd of 0.40 m (ISO 7783).
Weatherproof and washable
Resistant to UV radiation, precipitation and extreme thermal cycling - TÜV SÜD weather-simulation testing confirms durable performance across the full operating range. Xenon-arc and UV testing showed no colour change.
Anti-corrosion protection
The coating seals metal surfaces from corrosive media - a two-year immersion field study confirmed complete corrosion protection while uncoated references corroded severely under the same continuous immersion.
Antibacterial activity
Antibacterial activity on treated surfaces is verified by accredited laboratory testing - surface colonisation by pathogenic bacteria is substantially inhibited. E. coli shows a greater than 5.1-log reduction under ISO 22196.
Fire-resistant
Accredited fire testing verifies limited flame spread and minimal smoke development - certified under both European and North American fire safety classification systems: D-s2, d0 in Europe and Class A under ASTM E84, at FSI 20 and SDI 10.
Tintable on site
Compatible with acrylic pigment systems - the target colour blends directly into the coating mix. No separate decorative layer required. At 1 mm dry film the coating leaves ornamental elements and profiled surfaces visually unchanged.
Operating principle
How does it work?
GWR NANO INSULATION®'s nanotechnology-based structural design suppresses conductive, convective and radiative heat transfer simultaneously - through a combined microsphere system and a functional polymer binder. Heat loss measured on real building assemblies is almost never purely conductive: most conventional bulk insulation materials are optimised solely for the solid phase's thermal conductivity, while a material share of the convective and radiative component remains unaddressed. The coating's structural architecture - closed-cell, hollow microspheres embedded in a polymer matrix - unites suppression of all three mechanisms within a single, 1 mm layer, achieving a performance level a conventional material could only approach at substantially greater thickness.
- 01 Conduction barrier
Vacuum-filled glass-ceramic and gas-filled polymer microspheres jointly reduce the thermal conductivity of the solid phase. The hollow interior interrupts the conduction pathway, since the trapped gas conducts orders of magnitude less than the solid material.
- 02 Convection barrier
The closed shell structure of the microspheres and polymer binder prevents convective air movement within the coating. There is no interconnected air channel, since the continuous binder matrix individually encapsulates every microsphere without gaps.
- 03 Radiation barrier
The glass-ceramic and high-refractive-index titanium dioxide content reflects and scatters infrared radiation, reducing radiative heat flux. The particles reflect incident radiation via Mie scattering before it can be absorbed and converted to heat within the coating.
Technical specification
Key technical data.
- Density (liquid state)
- 0.533–0.546 g/cm³
- DIN EN ISO 2811-1:2016
- Non-volatile content (105 °C, 1h)
- 47.5 % (m/m)
- MSZ EN ISO 3251:2009 · ÉMI-TÜV SÜD R-804152
- Viscosity
- 1,225 mPa·s
- DIN EN ISO 2884-2:2003
- Service temperature range
- −60 °C ... +260 °C
- Manufacturer's recommendation
- Water vapour transmission rate (WVTR)
- 40 mg/m²/day
- ISO 7783:2018
- Sd - equivalent air layer thickness
- 0.40 m (V2 - medium)
- DIN EN ISO 7783:2018 / EN 1062-1:2004 · TÜV SÜD
- Thermal resistance (1 mm dry layer)
- R = 4.545 m²K/W
- TÜV SÜD Report 3229268; method MUC‐KSP‐A 1037
- Adhesion to substrate
- 0.2–0.8 MPa
- DIN EN ISO 4624:2016
- Young's modulus
- 17 MPa
- DIN EN ISO 527-3:2018
- Tensile strength
- 0.135 MPa
- DIN EN ISO 527-3:2018
- Shrinkage
- 7.4%
- DIN EN ISO 527-3:2018
- Impact resistance
- 2 Nm
- DIN EN ISO 6272-1:2011
- Weathering resistance - Xenon arc
- No colour change; no surface defects on steel, concrete-brick and free-film specimens at 720 h interim (3000 h programme)
- ISO 11341:2004
- Weathering resistance - UV fluorescent lamp + condensation
- No colour change or surface defects at 720 h interim (3000 h programme)
- ISO 16474-3:2013
- Reaction to fire classification (ÉMI, Hungary)
- D-s2, d0
- MSZ EN 13501-1:2019 · MSZ EN ISO 11925-2:2020 · MSZ EN 13823:2020 · BS EN 13238 · ÉMI O-34/2021
- Flame spread class (ASTM E84)
- Class A - FSI: 20 · SDI: 10
- ASTM E84-23d · Efectis FTST24823
- Hygiene, health & environmental safety
- Non-hazardous
- ÉMI-TÜV SÜD R-804152
- Safety in use
- Does not harm health
- ÉMI-TÜV SÜD R-804152
- Antibacterial activity - E. coli
- > 5.1-log reduction
- ISO 22196:2011 · Fraunhofer IPA WI 2404-1514
- Antibacterial activity - S. aureus
- < 1-log reduction
- ISO 22196:2011 · Fraunhofer IPA WI 2404-1514
Property Value Reference
Physical properties
Hygrothermal properties
Insulation performance
Mechanical properties
Fire performance
Health & safety
Independent verification 
Accredited thermal testing, verified performance data.
TÜV SÜD
EN ISO/IEC 17025 accredited test-house certificate - independently verified performance data forming the basis for the Declaration of Performance.
NATO NSN
NSN 8030-51-000-9542 - GWR NANO INSULATION® registered in the NATO member states product catalogue as a nano-technological thermal insulator.
ISO 9001:2015
Quality-management system covering product development, manufacturing and supply chain. Traceable and auditable quality assurance.
ISO 14001:2015
Environmental-management system governing material use, waste handling and emissions control throughout the manufacturing process.
Frequently asked questions
Questions and answers.
How thick is the GWR NANO INSULATION® coating layer?
The dried coating is 1 mm thick. No primer coat or structural modification is required for application.
What temperature range does it cover?
The coating operates across a service temperature range of −60 °C ... +260 °C.
How many countries is it available in?
The product is currently available in 45 countries — across the European Union, the Middle East, and Vietnam, supported by NATO Stock Number-based procurement.
Is it vapour-permeable?
Yes. The coating maintains substrate vapour diffusion capacity (Sd equivalent air layer thickness 0.40 m, V2 medium class per DIN EN ISO 7783), preventing condensation and moisture accumulation.
What surfaces can it be applied to?
The coating bonds without a primer to metal, concrete, brick, wood, plastic, glass and plasterboard — this broad substrate compatibility is what makes it viable across complex building assemblies using mixed materials, spanning new-build and retrofit projects alike.
What annual energy savings does it achieve?
TÜV SÜD EN ISO/IEC 17025 accredited laboratory testing confirms 43% annual energy saving versus an uninsulated reference building, 32% summer cooling saving and 9.5% winter saving versus a 10 cm EPS-insulated reference building.
Where has it been applied at scale?
Among documented large-scale applications, 113,800 m² were applied across Lusail National Stadium and Al-Thumama Stadium for the FIFA World Cup Qatar 2022, where the 1 mm coating replaced a 15–30 cm conventional insulation layer. A Vietnam field test recorded 43.02% average cooling energy savings and a peak single-day saving of 53.56%. Reference projects on residential buildings, panel blocks and heritage-protected properties in Hungary are also documented.
What warranty does it carry?
The contracting applicator - the party performing the specific application works - provides a 20-year applicator workmanship warranty. This warranty is contractual, engagement-specific, and governed by the applicable national construction law of the project jurisdiction.
Can GWR NANO INSULATION® be applied to heritage buildings?
Yes. Because the coating is only 1 mm dry film thickness, it does not alter the building's visible appearance, ornamental elements or profiled surfaces — making it suitable where heritage regulations prohibit visual changes to the facade. Conventional board insulation, several centimetres thick, would obscure arched window frames and cornice profiles entirely. A documented reference installation exists on a heritage-protected building in Gödöllő, Hungary.
Can it be applied without scaffolding?
Typically yes, on low and medium-height buildings. Airless spray technology enables application without scaffolding or specialist access equipment on surfaces that are safely reachable from ground level or by ladder. Taller buildings or hard-to-reach facade sections may require scaffolding or an aerial work platform for safe access. A standard, low/medium-height family home can be fully coated inside and out within 3 working days by a 3-person crew.
What certifications does it hold?
The product holds a TÜV SÜD test certificate (EN ISO/IEC 17025 accreditation) and a NATO Stock Number (8030-51-000-9542), and is certified to ISO 9001:2015 quality management and ISO 14001:2015 environmental management. Its fire classification is D-s2, d0 - based on MSZ EN 13501-1:2019, MSZ EN ISO 11925-2:2020, MSZ EN 13823:2020 and BS EN 13238, certified under ÉMI O-34/2021 - and ASTM E84-23d testing (Efectis FTST24823 report) confirms Class A flame spread (FSI 20, SDI 10). Health safety is certified under ÉMI-TÜV SÜD R-804152. The NATO Stock Number also supports procurement through allied defence logistics, and full test reports and certification documents are available on request.
Is it suitable for energy retrofit projects?
Yes. The coating is specifically engineered to address the technological and economic constraints of retrofitting the existing building stock - applied without demolition or long construction downtime, typically without scaffolding on low and medium-height buildings, with a TÜV SÜD-verified energy efficiency improvement. Because it requires no structural alteration, it can be used in renovation projects where conventional insulation systems are technically or economically unviable. Eligibility and terms for any available national or EU renovation funding scheme should always be verified against that specific programme's own call for proposals, in consultation with the applying contractor.