What is AAC?
Autoclaved Aerated Concrete (AAC) is a is a versatile building product made from cement, lime, gypsum anhydrite, fine sand or fly ash, aluminum powder, and water
Durable, versatile, and made to last
Autoclaved Aerated Concrete (AAC) is an advanced building material, precision-engineered into lightweight blocks and steel-reinforced panels. Unlike traditional concrete, AAC achieves exceptional structural strength while using only one-third of the material typically required. Its aerated composition reduces weight without compromising durability, resulting in a high-performance solution ideal for a wide range of applications. Elegant in design and exceptional in function, AAC redefines versatility in modern construction.
Unwavering strength when it matters the most
Homes constructed with Autoclaved Aerated Concrete (AAC) are built for longevity, standing resilient against harsh climates and extreme weather conditions. The material’s porous structure offers superior fire resistance, achieving the highest industry ratings by outperforming steel and fire-retardant lumber under intense temperatures. AAC also delivers exceptional thermal insulation and a natural defense against termites, mold, and mildew. Engineered to withstand hurricane-force winds exceeding 200 mph and offering remarkable seismic strength, AAC ensures structural stability even under the most demanding conditions. Merging enduring strength with intelligent design, AAC sets a new standard for resilient, high-performance living.
First large scale manufacturing started in 1929
Building on history
Autoclaved Aerated Concrete (AAC) was pioneered in the 1920s by Swedish architect Dr. Johan Axel Eriksson, who sought a lightweight, insulating alternative to traditional masonry. In 1924, he patented a steam-curing method that transformed aerated mixtures into durable, crystalline blocks. By 1929, commercial production began in Yxhult, Sweden, under the brand name Ytong, marking the start of AAC's global journey .
Today, AAC is a cornerstone of modern construction in countries like Germany, Poland, China, Australia, and the UK, where its thermal efficiency, fire resistance, and structural resilience are highly valued. What began as a Scandinavian innovation has become a globally trusted material, blending historic ingenuity with contemporary performance.
How does AAC stack up?
When it comes to performance, AAC blocks are an innovative product in a class of their own.
Distinctly seismic resistant
When properly designed and reinforced, buildings constructed with AAC can meet or exceed modern seismic codes, offering a lightweight yet strong solution that significantly reduces earthquake-related risk or damage.
Eco-friendly & sustainable
During manufacturing, these naturally abundant materials create a non-toxic, non-pollutant, 100% recyclable product.
Additionally, the final product uses a third of the cement in comparison to a typical concrete masonry unit or cinderblock.
Thermally superior
AAC offers superior thermal performance due to its air-filled cellular structure, which provides excellent insulation and low thermal conductivity. This helps regulate indoor temperatures, reduces energy use for heating and cooling, and enhances overall comfort and efficiency.
Termite free structure
AAC is termite-resistant because its cellular structure is too hard and dry for termites to penetrate or infest. Additionally, AAC is made from inorganic materials, which do not provide any nutritional value for termites, making it an unsuitable environment for them to thrive.
Advanced acoustics
Due to its porous and lightweight structure, AAC effectively dampens and reduces sound vibrations. The air pockets within the material act as barriers, preventing sound from passing through easily and minimizing noise transmission.
Tornado-grade
wind resistance
Homes built with AAC can withstand extreme wind conditions, including those exceeding 200 mph, making them highly resilient in tornado-prone regions and compliant with or exceeding standards set for storm-resistant construction.
Mold resistant
AAC is mold-resistant because it is inorganic, meaning it does not support the growth of mold or mildew. Its breathable, moisture-regulating structure also helps prevent the buildup of condensation, further reducing conditions favorable to mold.
Industry-leading fire rating
AAC possesses high fire resistance, a common characteristic of cement-based materials. It can endure fire exposure for up to four hours without charring or compromising its structural integrity. Additionally, AAC does not release toxic fumes, even under extreme heat.
