The Triesch House Berlin: When California Modernism Met –12°C Winters – Powered by Hebei Woqin Aerogel Felt

The Triesch House Berlin: When California Modernism Met –12°C Winters – Powered by Hebei Woqin Aerogel Felt

In the heart of Berlin’s Charlottenburg district stands a house that looks like it was airlifted straight from the hills of Los Angeles. Clean lines, warm mahogany cladding, floor-to-ceiling glass, and impossibly slender concrete columns. Yet on a February morning when the temperature outside is –12°C, the thermostat inside reads a steady 22°C — with almost no heating required.

The secret behind this small miracle? Walls that are only 20 cm thick, insulated with Hebei Woqin’s high-performance aerogel felt — the lightest solid material on Earth.

For decades, extreme energy efficiency meant one thing: thick walls. In Germany, a proper Passivhaus often demands 40–60 cm of insulation. The result? Lost interior space, deep window reveals, and a visual bulk that clashes with modernist ideals of lightness and openness.

Architect Lars Triesch refused to accept that compromise. Inspired by the post-and-beam masterpieces of California’s Case Study Houses and Ray Kappe’s floating structures, he wanted a Berlin home that felt airy and transparent — without freezing its occupants.

Aerogel felt made it possible.

How They Did It: The Mahogany “Sandwich” Wall

A 15 cm laminated mahogany panel is wrapped around a 3–5 mm Hebei Woqin aerogel felt blanket on both sides. Total wall thickness: just 20 cm.

Measured U-value: 0.18 W/(m²·K) — easily beating Germany’s strict Passivhaus requirement while looking like fine furniture from the outside.

Hebei Woqin’s aerogel felt delivers verified thermal conductivity of 0.020 W/(m·K) at 25°C and 0.039 W/(m·K) at 300°C (GB/T 10295-2008), plus 99.7% hydrophobicity (GB/T 10299-2011). Independent third-party testing by the National Glass Fiber Product Quality Inspection and Testing Center confirms zero condensation risk and full A1 non-combustible performance (GB 8624-2012 & EN 13501-1 Class A1).

Skinny Concrete Columns That Still Insulate

Structural columns were reduced from the usual 30–35 cm down to 18 cm by embedding a 5 mm aerogel felt core and reinforcing with carbon-fiber bars. The columns are stronger than traditional ones and eliminate thermal bridges completely.

Windows That Don’t Leak Heat

Aluminum window frames received aerogel-filled thermal breaks, dropping conductivity from ~1.8 W/(m·K) to 0.8. Paired with triple low-E glazing and warm-edge spacers, the entire window assembly hits a U-value of 0.78 W/(m²·K).

A Roof That Breathes

Instead of thick PIR boards, the pitched roof was sprayed with 20 mm of Hebei Woqin aerogel coating under the metal standing-seam skin. No condensation, no heat loss, and 3°C cooler attic temperatures in summer.

Three years of monitored data tell the story: annual heating demand is 28–32 kWh/(m²·year) — roughly half the average for new Berlin homes of similar size. Interior usable floor area increased by 4–6% simply because the walls are thinner.

Beyond One House: Aerogel Felt Goes Mainstream

What was once an exotic material used on Mars rovers and oil pipelines is now accessible thanks to advanced ambient-pressure production. Prefabricated aerogel panels are factory-made to ±1 mm tolerance, cutting on-site labor by 30–40%. Cities from Paris to Shenzhen are testing aerogel retrofits on historic façades that cannot be thickened externally — preserving architectural heritage while slashing energy bills 35–50%.

Hebei Woqin’s aerogel felt is officially represented in the European Union by TOCYA TRADING (Paris), with the EU Authorized Representative certificate valid until September 2026, ensuring full compliance for European projects.

The Bigger Picture

Lars Triesch puts it simply while standing on his rooftop terrace overlooking Berlin’s snowy treetops:
“Aerogel didn’t just save energy. It gave me back the proportions I dreamed of. For the first time, extreme performance and architectural elegance aren’t enemies — they’re partners.”

In an era when buildings must become nearly zero-energy without turning into bulky bunkers, aerogel felt is proving that high performance doesn’t have to look heavy.

The future of sustainable architecture isn’t thicker walls. It’s smarter, thinner, lighter ones — and it’s already here.

Take Action: Bring Aerogel Felt to Your Project

Whether you are designing a Passivhaus, retrofitting historic façades, or building next-generation energy-efficient structures, Hebei Woqin’s aerogel felt delivers unmatched thermal performance, fire safety, and design freedom.

Contact us today to:
• Download the “Aerogel Felt for Passive House & Modern Architecture Guide” (free).
• Request a tailored U-value and lifecycle cost analysis for your project.
• Schedule a 20-minute consultation with our architectural insulation specialists.
• Receive 1–2 m² free samples (you pay only courier) with full test reports.

Hebei Woqin Trading Co., Ltd.
Ruibin An – Business Development Manager
Phone / WhatsApp / WeChat: +86 139 3392 9092
Email: an@cn-aerogel.com
Website: insulatewool.com

With 12 years of specialization in advanced aerogel felt solutions, partner with us to deliver verifiable performance and true sustainability.