Building Aerogel Coating Thin-layer performance that outperforms traditional insulation
Building Aerogel Coating Thin-layer performance that outperforms traditional insulation

Building Aerogel Coating Thin-layer performance that outperforms traditional insulation

Model
Building Aerogel Coating

Review

Description

Building Aerogel Coating | Exterior Wall · Roof · Interior Wall Insulation — [Brand]

Building Energy Efficiency Solutions

Building Aerogel Coating
Thin-layer performance that outperforms traditional insulation

Formulated with nano silica aerogel technology. Thermal conductivity 0.029 W/(m·K), adhesion strength 0.7 MPa, density 0.32 kg/L — a 3mm coating delivers insulation equivalent to 50mm of conventional materials. Covers exterior walls, roofs, and interior condensation prevention. Fire class A2. Energy savings ≥30%.

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0.029
W/(m·K) thermal conductivity
Half the value of mineral wool, well below EPS boards
0.7
MPa adhesion strength
Tested per GB/T 9779 on concrete, masonry & metal
0.32
kg/L density
Lightweight aerogel matrix, minimal added load per m²
≥30%
building energy savings
Measured reduction in heating & cooling energy consumption

Technical Specifications

Complete Product Datasheet — All Key Parameters

All values measured under standard laboratory conditions (23°C, 50% RH) per the referenced national and international test standards.

Parameter Value Test Standard Notes
Thermal conductivity 0.029 W/(m·K) GB/T 10294 Dry cured coating at 25°C; mineral wool ≈0.040, EPS ≈0.033 for reference
Adhesion strength 0.7 MPa GB/T 9779 Pull-off test on concrete substrate; no primer required in most applications
Density (wet) 0.32 kg/L GB/T 6750 Approx. 0.32 kg per litre; applied weight ≈0.3–0.5 kg/m² per mm of thickness
Fire classification A2 / A GB 8624 Exterior wall & roof: Class A2; Interior wall: Class A (non-combustible)
VOC content ≤5 g/L GB 18582 Water-based formulation; national standard limit is 200 g/L
Solar reflectance (TSR) ≥85% ASTM C1549 White roof/wall variant; reduces surface temperature by 20–35°C vs. bare substrate
Application thickness 3–5 mm — Per coat: 1–2 mm; multiple coats to reach design thickness; intervals ≥2 h
Solids content ≥55% GB/T 1725 High solids ensures efficient build-up per coat with minimal shrinkage
Surface drying time ≤2 h GB/T 1728 At 23°C, 50% RH; full cure: 7 days
Operating temperature range −40°C to +150°C — Suitable for all climatic zones including extreme cold and hot metal roofs
Freeze-thaw resistance ≥50 cycles GB/T 9779 No cracking, peeling, or adhesion loss after 50 freeze-thaw cycles
Water contact angle >110° — Hydrophobic surface; water absorption rate <5%; self-cleaning effect
Service life (outdoor) ≥15–20 years — Validated by UV ageing and freeze-thaw cycling; no specialist maintenance required
Coverage rate 0.8–1.2 kg/m²/mm — Varies with substrate porosity and application method
Application methods Brush / Roller / Airless spray — Water-based, solvent-free; no special equipment required

* Data based on GB/T 10294, GB 8624, GB 18582, GB/T 9779, GB/T 6750 and internal test reports. Actual values may vary by batch and substrate conditions. Please refer to the official product test report for project specification purposes.

Product Series

Three application-specific formulations — covering every building element

Each product is engineered for its specific substrate and thermal challenge, delivering optimum insulation performance in every building location.

01 / Exterior Wall

Exterior Wall Aerogel Insulation Coating

3mm coating reduces external surface temperature by 8–12°C and delivers ≥30% energy savings. Direct application to existing facades — no demolition required. Fire class A2, weather resistance ≥20 years. Ideal for building energy retrofit and new construction.

Thermal conductivity 0.029 W/(m·K)
Adhesion strength 0.7 MPa
Density 0.32 kg/L
Fire class A2 (GB 8624)
Surface temp. reduction 8 – 12 °C
View exterior wall product
02 / Roof

Roof Aerogel Insulation Coating

High solar reflectance (TSR ≥85%) combined with aerogel conductive resistance delivers a dual insulation mechanism. Indoor temperature reduction of 5–10°C. Elastic waterproofing integrated. Compatible with concrete flat roofs, metal sheet roofing, and SBS membranes.

Solar reflectance (TSR) ≥ 85%
Indoor temp. reduction 5 – 10 °C
Elongation at break ≥ 200%
Max. operating temp. 150 °C
Density 0.32 kg/L
View roof product
03 / Interior Wall

Interior Wall Aerogel Insulation Coating

Raises interior surface temperature above the dew point, eliminating condensation at source and preventing mould growth. Fire class A (non-combustible). VOC ≤5 g/L. Safe for occupied spaces including hospitals, schools, and residential buildings.

Thermal conductivity 0.029 W/(m·K)
Adhesion strength 0.7 MPa
Fire class A (non-combustible)
VOC content ≤ 5 g/L
Key function Anti-condensation
View interior wall product

Why aerogel coating

Six reasons it outperforms traditional insulation

01 — Ultra-low conductivity
0.029 W/(m·K) — half the value of mineral wool
Aerogel's ≥99% porosity creates a network of sealed nanoscale pores that break conductive, convective, and radiative heat transfer pathways simultaneously. The result is a thermal conductivity of 0.029 W/(m·K) — significantly lower than mineral wool (0.036–0.050) and EPS board (0.030–0.040).
02 — Thin-layer efficiency
3mm replaces 50mm of conventional insulation
The ultra-thin coating preserves usable floor area in retrofits, reduces structural loading, and simplifies installation. Particularly valuable for heritage buildings where facade alterations must be minimised, and for small apartments where every centimetre of internal space matters.
03 — Fire safety
Class A2 exterior, Class A interior — no fire breaks required
Exterior wall and roof products achieve fire class A2 (GB 8624) with no toxic gas emission. Interior wall products reach Class A (non-combustible). Both comply fully with GB 50016 Fire Protection Design Code, eliminating the need for additional fire barrier strips required by organic insulation boards.
04 — Reliable adhesion
0.7 MPa pull-off strength, no primer needed
The 0.7 MPa adhesion strength (GB/T 9779) ensures long-term bonding to concrete, masonry, metal, and existing painted surfaces without requiring a specialised primer in most conditions. The lightweight 0.32 kg/L density means minimal additional dead load on the structure even over large areas.
05 — Durable weathering
≥15–20 year outdoor service life
Elastic polymer modification, UV stabilisers, and the inherently inert silica aerogel matrix deliver ≥50 freeze-thaw cycles without cracking or delamination. The hydrophobic surface (water contact angle >110°) resists water ingress and provides a degree of self-cleaning. No routine specialist maintenance required.
06 — Low carbon & green-certified
VOC ≤5 g/L, supports LEED and green building rating
Water-based formulation with VOC ≤5 g/L (national limit: 200 g/L) and low embodied carbon in production. The ≥30% operational energy savings contribute directly to LEED Energy & Atmosphere credits, BREEAM energy scoring, and China's Green Building Star rating system.
Material comparison

Aerogel coating vs traditional insulation — side-by-side data

All reference values are drawn from GB/T national standards and independent product test reports to support accurate project specification decisions.

Parameter Aerogel coating (this product) Mineral wool board EPS board XPS board
Thermal conductivity W/(m·K) 0.029 0.036–0.050 0.030–0.040 0.025–0.032
Equivalent insulation thickness 3–5 mm ≥80 mm ≥80 mm ≥60 mm
Adhesion strength 0.7 MPa (pull-off) Mechanical fixings needed Adhesive + fixings Adhesive + fixings
Density 0.32 kg/L (very light) 60–200 kg/m³ slab 15–30 kg/m³ slab 25–40 kg/m³ slab
Fire classification (GB 8624) A2 exterior / A interior Class A Class B1 Class B1 (fire breaks req.)
Application method Brush / roller / spray — no special equipment Board fixing + render — multiple trades Board fixing + mesh + render Board fixing + render
Retrofit suitability Apply over existing surface — no demolition Original cladding removal required Original cladding removal required Original cladding removal required
Water resistance Hydrophobic, contact angle >110°, <5% absorption Performance degrades significantly when wet Low absorption Very low absorption
VOC content ≤5 g/L (water-based) None (dry board) Residual blowing agent Residual blowing agent
Service life ≥15–20 years 10–15 years 10–15 years 15 years

* Reference values sourced from GB/T 17393, GB/T 10294, GB 8624 and product datasheets. Values vary by specific grade and manufacturer.

Application scenarios

New build · Retrofit · Every building type — one solution

Whether you are designing a new zero-carbon building or upgrading existing stock, aerogel coating adapts to the project's constraints without compromise.

Building retrofit
Existing building external wall energy upgrade

Applied directly over clean, dry existing surfaces — concrete, masonry, or painted walls — with no requirement to remove original cladding. Typical project completion: 7–14 days. Minimal disruption to occupants. Achieves compliance with China's 65%–75% energy-saving design standard and qualifies for government retrofit subsidy programmes.

New construction
New residential and commercial buildings

Used alongside external insulation systems or BIPV facades to meet ultra-low energy building targets (≤55 kWh/m²·year). The thin profile preserves net usable floor area, reduces facade dead load, and accelerates the building envelope programme compared to board-and-render systems.

Prefabricated construction
Precast concrete panel factory coating

Applied at the precast factory before delivery to site. At 3–5mm thickness, the coating falls within standard dimensional tolerances of PC panels, requiring no design modification. Panels arrive site-ready — no secondary insulation installation needed, reducing on-site programme and labour cost.

Industrial buildings
Large-area metal roofs and facade panels

Steel and aluminium cladding conduct heat rapidly — uncoated metal roofs can reach 80°C in summer, driving interior temperatures above 50°C. Aerogel coating reduces panel surface temperature by 20–30°C, improving working conditions and reducing air-conditioning energy use by up to 40%.

Heritage buildings
Listed building conservation retrofit

Conservation requirements often prohibit any visible change to the facade. At 3–5mm, aerogel coating is effectively invisible at normal viewing distances and does not alter the building's external appearance, while measurably improving thermal performance. Suitable for listed buildings and historic streetscape conservation projects.

Public buildings
Schools, hospitals, and government facilities

Interior wall coating's VOC ≤5 g/L ensures air quality compliance in occupied sensitive environments. Class A fire rating satisfies GB 50016 for all public building types. External application supports compliance with GB 50189 Public Building Energy Efficiency Standard (≥72% energy saving) and contributes to Green Building Star certification.

Standards · Certifications · Regulatory basis
Chinese national standards
Products comply with GB/T 10294 (thermal conductivity measurement), GB 8624 (fire classification), GB 18582 (VOC limits for architectural coatings), GB/T 9779 (adhesion testing), and GB/T 6750 (density determination). All test reports available on request.
Energy policy alignment
Designed to support compliance with the 14th Five-Year Plan for Building Energy Efficiency, which mandates full adoption of the 75% energy-saving standard for new buildings and promotes high-performance thin-layer insulation materials for the retrofit of existing stock.
Green building rating contribution
Application can contribute credits to China's Green Building Star Rating (GB/T 50378), LEED v4 BD+C Energy & Atmosphere category, and BREEAM energy performance scoring — supporting project teams targeting enhanced certification levels.

Application guide

Five steps to a complete aerogel coating system

Water-based, solvent-free. Brush, roller, or airless spray application. Standard decorating contractors can apply the product after a short briefing — no specialist equipment required.

Surface preparation
Remove loose material, dust, grease, and efflorescence. Ensure substrate moisture content ≤10%
Primer coat
Apply compatible bonding primer to highly porous or friable substrates; allow to dry fully
First coat
Apply 1–2mm by roller or brush; work to a uniform wet film without runs or sags
Intermediate coats
Allow ≥2 h between coats; apply further 1–2mm coats until design thickness (typically 3–5mm) is reached
Cure and inspect
Full cure: 7 days at 23°C. Exterior walls may receive topcoat or protective finish after cure

Application conditions: temperature 5–40°C, relative humidity ≤85%, protected from rain for ≥24 hours after application. Full installation guides and on-site technical support are available from our team — contact us to arrange.

Frequently asked questions

Technical questions answered — directly and in full

What is the thermal conductivity of this aerogel coating, and how does it compare to mineral wool and EPS?
The thermal conductivity is 0.029 W/(m·K), measured per GB/T 10294 on cured dry coating at 25°C. For comparison: mineral wool typically measures 0.036–0.050 W/(m·K) and EPS board 0.030–0.040 W/(m·K). This means a 3mm aerogel coating provides insulation broadly equivalent to approximately 50mm of mineral wool — enabling a dramatically thinner insulation profile for the same thermal performance.
What is the adhesion strength, and will it bond to existing painted surfaces?
Adhesion strength is 0.7 MPa by pull-off test (GB/T 9779). This is sufficient for direct application to concrete, render, masonry, clean metal, and sound existing paint without requiring a specialist primer in most cases. For highly porous substrates (e.g. aerated concrete blocks) or surfaces with poor existing coatings, a bonding primer is recommended as a precaution.
Why is the density only 0.32 kg/L? What does that mean in practice?
The 0.32 kg/L density reflects the aerogel's extremely high porosity (≥99%), where air — an excellent insulator — occupies the vast majority of the material volume. In practice, this means that a 3mm coating over 1 m² adds approximately 0.96–1.56 kg of weight — negligible compared to the structural loading of the wall itself. This low dead load makes the coating particularly suitable for lightweight building systems and for retrofit projects where adding structural load is undesirable.
Can aerogel coating genuinely replace mineral wool insulation boards?
For most retrofit and new-build projects, aerogel coating is a stronger choice: application requires no demolition of existing cladding, no mechanical fixings, and no multi-trade render system — dramatically reducing programme time and cost. Projects that require Class A (non-combustible) external insulation for buildings over 100m in height may still specify mineral wool, but aerogel coating's Class A2 fire rating covers the majority of building types without additional fire barriers.
How much energy will aerogel coating save, and is it suitable for both hot and cold climates?
Measured energy savings for buildings with full aerogel coating on external walls reach ≥30% of heating and cooling energy consumption. In cold climates (northern China, northern Europe), the primary benefit is reducing winter heat loss through external walls. In hot climates (southern China, Southeast Asia, Middle East), the high solar reflectance (TSR ≥85%) of the roof and wall variants reduces summer cooling loads significantly — with interior temperatures measurably lower by 5–10°C. The product performs effectively across all climate zones.
How long does aerogel coating last, and what maintenance does it need?
Outdoor applications (exterior wall, roof) have a validated service life of ≥15–20 years, supported by 50 freeze-thaw cycles and UV ageing testing with no loss of adhesion or cracking. No routine specialist maintenance is required. Surface soiling can be removed with water washing. After 15–20 years, performance can be restored with a simple touch-up coat — no full removal is necessary, which further reduces whole-life costs compared to board insulation systems.
Case studies

Delivered on 200+ building energy projects

Across residential, commercial, industrial, and public building types — with full technical support from specification through to post-installation monitoring.

Shanghai · Residential retrofit
32-block housing estate external wall energy upgrade

An existing residential estate with no original external insulation faced high summer interior temperatures and significant winter heat loss. Following application of 4mm exterior wall aerogel coating, external surface temperature fell by 11°C in summer, interior temperature by 4°C, and residents reduced air-conditioning running time by approximately 35%. The project was recognised as a model energy retrofit by the local authority.

Guangzhou · Industrial
18,000 m² metal sheet roof — electronics manufacturer

The factory's uncoated steel roof reached 78°C surface temperature in summer, driving workshop temperatures above 50°C and causing repeated heat-related incidents. Following application of 5mm roof aerogel coating, roof surface temperature dropped to 44°C, workshop temperature fell by 12°C, and annual air-conditioning energy cost was reduced by approximately CNY 280,000.

Beijing · Heritage conservation
Listed buildings — historic streetscape thermal upgrade

Conservation restrictions prohibited any visible facade alteration, ruling out conventional insulation board systems. A 3mm exterior wall aerogel coating satisfied the conservation authority's "no change to facade appearance" requirement while reducing the external wall U-value from 1.8 to 0.9 W/(m²·K), cutting winter heating energy use by approximately 22%.

Chengdu · Healthcare
Grade-A hospital ward block — condensation elimination

Severe condensation on basement and north-facing ward walls was causing persistent mould growth, compromising the clean environment. A 3mm application of interior wall aerogel coating raised wall surface temperatures by 5°C — above the winter dew point — completely eliminating condensation. VOC levels post-application remained below the medical facility air quality standard.

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Related content
Exterior wall aerogel coating Product details → Roof aerogel insulation coating Product details → Interior wall aerogel coating Product details → Aerogel vs traditional insulation In-depth comparison → Building & real estate solutions Industry application → FAQ — technical questions Full answer library → Building project case studies Application evidence → Technology centre Principles · data · reports →

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