Invented in Sweden in 1924 AAC is a lightweight, precast, foam concrete building material that simultaneously provides structure, insulation and fire and mold-resistance.

In the product’s manufacture, Portland cement is mixed with a lime, silica sand, water, expansion agent and poured into a mold. The reaction between the expansion agent and concrete causes microscopic hydrogen bubbles to form, expanding the concrete to about three times its original volume. After evaporation of the hydrogen, the now highly closed-cell, aerated concrete is cut to size, form and steam-cured in a pressurized chamber (an autoclave). The result is non-organic, non-toxic, airtight material that can be used in non- or load-bearing exterior or interior wall, floor and blocks.

"The Exeed Litecrete production process generates no pollutants or hazardous waste."



– Non-combustible
– Fire rating of 3 hours on 200mm thick AAC unit
– Emits no toxic fumes when exposed to fire
– The perfect building material to withstand the stringent requirements of building codes
– Increases the safety of the building’s occupants
– Potentially lower insurance rates
– Can be used as cladding to protect other materials such as steel or to increase the fire rating of concrete walls


– AAC is as strong and sustainable as conventional masonry
– Easier to work with than wood
– Easily cut and crafted with common hand tools (power tools may be
required to cut reinforcement)
– Ability to readily make straight cuts reduces time and waste in site alterations
– Lightweight, AAC weighs one fifth of standard concrete products
– Easy to handle
– Reduces labor costs and construction time


– Provide good sound insulation
– Ideal for construction projects like apartments, hotels, and public buildings
– Porous internal structure is comprised of 60-70% air, effectively reducing sound wave transmission
– Typical STC rating is 50/52 for 500/600 density blocks or panels (db. 50-55) tested in accordance with ASTM
– E90 and classified in accordance with ASTM E413


– AAC qualifies as a “green” building material
– ESTIDAMA listed.
– Durable and energy efficient
– Manufactured using all natural resources
– No harmful emissions of toxic chemicals
– Completely environmentally compatible
– AAC production process requires much less energy than that of other materials
– Outstanding energy efficient qualities
– Excellent source of ongoing environmental conservation.
– Manufacturing process generates less than 1.5% waste with over 1% of this being recycled and used in other manufacturing or industrial processes
– Accurate and easy to cut, reducing the generation of solid waste during construction
– Do not need to be used in combination with insulation products that increase the cost of construction and the environmental impact


– Water absorption coefficient of 4kg/m2 x h0.5
– Weather and moisture resistance is achieved with a final surface treatment
such as stucco, plaster and paint, or cladding such as bricks and/or other
exterior materials
– Excellent structural integrity
– Resists high winds and violent storms
– Extremely durable
– Will not degrade under normal climatic conditions
– Outstanding durability characteristics over traditional materials relative to
humidity, freeze/thaw cycles and chemical attack.


– Provide outstanding thermal insulation
– Make a major contribution to environmental protection
– Dramatically reduce energy needs (and cost) of space heating and cooling in buildings
– Saves as much as 50% in Heating and Cooling Energy
– A bare 25 cm thick AAC wall provides the same thermal insulation value like wall of cement blocks with a thickness of 270 cm


– Dramatic positive impact on the material’s rate of installation
– Easy to use
– Quick to install
– A crew can install more than four times the area of AAC than that of a regular masonry application in the same period of time


– Impervious to attack by insects and termites
– Potentially saving large amounts being spent on termite control and repair costs