Aerogel Insulation Coating in 2025: 3-5 mm Real Projects That Actually Work

In 2025, I personally handled real-world cases of aerogel insulation coatings.

I've been working with aerogels for 12 years, and the most frequently asked question is: "Can this coating really replace thick insulation layers?"

The answer is: Yes, but you have to choose the right product and apply the correct thickness.

First, the conclusion: Currently, only the 3-5 mm thickness range is practical.

Thinner coatings (1-2 mm) have only half the effectiveness in summer.

Thicker coatings (>8 mm) immediately become cost-ineffective.

3-5 mm is currently the sweet spot: thermal conductivity of 0.025-0.035 W/m·K, with actual measurements showing a 5-8 ℃ reduction in exterior wall temperature in summer and a 55-65% reduction in heat loss in winter.

Several Real Projects I Worked on in 2024-2025

"Prefabricated Jiangnan-style Courtyard" in the suburbs of Shanghai (Completed March 2025)

Aluminum-magnesium-manganese tile roof + 4 mm aerogel coating on the entire exterior wall

Measured results:

• On the hottest day in July, the outdoor temperature was 42 ℃, and the indoor temperature without air conditioning was 32.8 ℃ (7.2 ℃ lower than the adjacent brick house).

• The construction period only increased by 2 days (spraying is much faster than installing insulation boards).

Nanjing 1912 Street Shikumen Renovation (December 2024)

The century-old red brick walls could not be insulated externally, so only 3 mm aerogel coating was applied to the interior walls.

Tested before winter: Heating energy consumption decreased from the original 1.8 yuan/㎡·day to 0.76 yuan, and the owner immediately said, "We'll spray the entire building next year."

Shaanxi Yan'an Cave Dwelling Moisture-Proofing (January 2025)

3.5 mm coating applied to the interior walls of the cave dwelling. Six months later, there was no more mold on the walls, and the indoor temperature increased from 9 ℃ to 16 ℃. The local housing and construction bureau has already included us in their recommended list.

PetroChina Xinjiang Karamay LNG Storage Tank Exterior Wall (-196 ℃)

Originally used perlite + galvanized sheet metal, changed to 5 mm aerogel coating + silicone protective layer in 2024.

Surface temperature decreased from -160 ℃ to -80 ℃, and the evaporation rate decreased by 58%, saving hundreds of tons of LNG per year.

Three Major Pitfalls Encountered During Construction (Hard-Learned Lessons)

The base layer must be dry! Moisture content > 10% will directly cause blistering. One project in Shanghai required rework costing 300,000 yuan.

Alkali-resistant mesh fabric must be applied to the corners first, otherwise 90% will crack.

Never use ordinary latex paint for roller application; airless spraying must be used for even atomization. Latest Prices for 2025 (Transparent Pricing, Avoid Scams)

Standard Gray Version: 180-220 RMB/m² (based on 5 mm dry film)

Light-colored/Customizable Color Version: 280-320 RMB/m²

Super Hydrophobic Weather-resistant Version (Recommended for coastal areas): 380-420 RMB/m²

Slightly more expensive than 10 cm XPS external insulation, but overall (no need for framing, no need for protective layer, no need for secondary renovation) the cost is basically the same or even cheaper.

Want to try a 10 square meter sample? I just received a batch of coatings made with original German powder this week. I can send you a free sample (shipping cost payable upon delivery). After application, send me the data, and I'll give you the lowest price for your next order.

Ruibin An

Hebei Woqin Trading Co., Ltd.

WhatsApp +86 13933929092

12 years of experience focusing only on practical aerogel coatings. No empty promises, just hard work.