International Masonry Institute News

The Future of AAC Might Be Here

We just came back from a very educational trip to Xella’s autoclaved aerated concrete plant in Georgia, where they make blocks, panels, cladding and more. The company bills itself as the world’s leading manufacturer of the lightweight concrete, and it’s easy to see why.

The plant has nine autoclaves going full steam - literally. (In fact, they recycle the steam multiple times, which helps them earn sustainability points.)

Even more impressive was their approach to quality control. Producing good stuff is something that really speaks to us as we seek out new products and work opportunities, and partner with manufacturers to ensure quality training.
The real kicker might be their distribution system, which addresses the simultaneous needs for speed, availability and geographic diversity. For those people thinking about trying AAC, this might be a perfect time to take another look.

NEWS UPDATE: Coastal Living magazine just chose Xella’s AAC blocks for its 2009 Idea House, touting it for design and building solutions that include good acoustics, energy efficiency, fire resistance, and decreased maintenance. (Check out the construction video). For more information, go to

For more on the virtues of autoclaved aerated concrete (AAC), check out this recent CNN clip. One caveat, though: an inaccurate headline made it sound like California officials are hesitant about AAC because of seismic concerns. AAC’s seismic performance has been clearly demonstrated in laboratory tests and real conditions, and accepted by major code bodies.

WHAT’S YOUR OPINION OF AAC? We would like to hear from you, so please submit your thoughts or suggestions in our “Comment” section.

Energy Efficiency, Sustainable Design