At Building Products Group in St. Louis, MO, we specialize in supplying and supporting high-performance Autoclaved Aerated Concrete (AAC) Systems for commercial, institutional, and residential construction. AAC is one of the most innovative and sustainable masonry solutions available today—delivering outstanding energy efficiency, fire resistance, and design flexibility while reducing construction time and costs.

We proudly represent leading AAC manufacturers including Aercon, New Castle, and Celcrete, ensuring our clients receive the highest-quality products and technical support for every project.

As experts in energy-efficient masonry systems, Building Products Group understands that the building envelope plays a critical role in performance and sustainability. AAC provides a superior alternative to traditional concrete, block, or frame construction.

This lightweight, precast material combines structural strength, insulation, and sound attenuation in a single, easy-to-install component. The result is a building system that reduces heating and cooling demands, minimizes waste, and promotes healthier indoor environments.

Why Choose Autoclaved Aerated Concrete?

AAC is produced from natural raw materials—sand, cement, lime, water, and a small amount of aluminum powder—that undergo a high-pressure steam curing process. This creates millions of microscopic air pockets that give the material its signature lightweight yet durable structure.

Key advantages include:

• Exceptional Energy Efficiency: The air-entrained composition provides continuous thermal insulation, dramatically lowering energy costs.
  
  
• Fire and Moisture Resistance: AAC is non-combustible and highly resistant to mold, mildew, and water penetration.
  
  
• Acoustic Performance: Its high Sound Transmission Class (STC) ratings make it ideal for schools, hospitals, hotels, and multifamily housing.
  
  
• Environmental Benefits: AAC uses less raw material, generates minimal waste, and contributes to LEED® certification points.
  
  
• Ease of Construction: Lightweight panels and blocks are easy to cut, handle, and install—speeding up project timelines and reducing labor costs.
  
  

Products from Trusted Manufacturers

We source from some of the industry’s most respected AAC producers to ensure quality, consistency, and design flexibility.

• Aercon: Aercon AAC is a leading manufacturer in the U.S. known for its comprehensive range of wall panels, floor and roof systems, lintels, and blocks. Aercon products are engineered for precision, ensuring exceptional dimensional accuracy and long-term performance. Their systems offer structural capability along with outstanding energy efficiency—making them a top choice for sustainable construction across a wide range of applications.
  
  
• New Castle – AAC Trim and Architectural Mouldings: New Castle Architectural Mouldings provide creative and durable finishing solutions that complement AAC wall systems beautifully. These products include pre-cast trim, sills, cornices, and custom mouldings made from AAC materials, delivering the same thermal and moisture resistance as the main wall components. Lightweight and easy to shape, they allow architects to achieve intricate design details without sacrificing efficiency or performance.
  
  
• Celcrete: Celcrete offers advanced AAC technology with a focus on structural reliability and environmental performance. Their systems are engineered to provide superior strength, impact resistance, and acoustic control—ideal for demanding commercial and institutional projects. Celcrete’s versatility makes it an excellent solution for both load-bearing and non-load-bearing walls, offering builders the flexibility to meet diverse project requirements.
  
  

Sustainable, Resilient, and Cost-Effective

At Building Products Group, we emphasize low-embodied-energy materials that contribute to long-term building sustainability. AAC fits perfectly within this mission—reducing the carbon footprint of construction while providing unmatched resilience against fire, moisture, seismic activity, insects, and rodents.

Because AAC combines multiple performance characteristics in one material, it eliminates the need for additional insulation layers or fireproofing, further reducing costs and simplifying design.

Partner with Building Products Group

With decades of expertise in energy-efficient masonry and building envelope systems, Building Products Group is your trusted partner for Autoclaved Aerated Concrete solutions in the Midwest and beyond. We provide design consultation, technical support, and product sourcing to help architects, engineers, and builders realize the full potential of AAC.

Whether you’re constructing a high-rise, educational facility, or residential development, we’ll help you specify and integrate the right system for maximum performance and efficiency.

Contact us today to learn more about AAC systems from Aercon, New Castle, and Celcrete, and discover how Building Products Group can help you build smarter, stronger, and more sustainably.

• Aercon
• AAC Trim/Architectural Mouldings
  • New Castle
  • Celcrete

Aercon General Brochure »

The Nation's First Certified DOE Challenge Home Case Study »
The 4305 square foot four bedroom Wilson Residence is the First Certified DOE Challenge Home. The structure produces more energy than it consumes and was built at one third less cost than originally proposed. A key feature of the home is the use of AAC autoclaved aerated concrete Block for the exterior walls. Please contact us for further details.

A Case Study in Loadbearing AAC / Richton Park Community Center »
This abstract details the first use of loadbearing AAC in the Chicago area: 30-ft high, 12" thick gymnasium walls.
It explains in detail the special nature / properties / benefits of designing & constructing loadbearing AAC block walls.