ACCOA THERMAL INSULATION

The manufacturing process creates millions of tiny air cells that provide excellent thermal resistance. This thermal resistance combined with the benefits of thermal mass inertia, whole wall coverage and low air infiltration will, in many jurisdictions, eliminate the need for additional insulation.

Wherever it is used, AAC's high level of thermal performance means U-value requirements are met more easily, reducing or even eliminating the need for additional insulation, so producing significant cost savings.

Heating and air-conditioning can be major cost factors in the operating expenditures of any type of building. Because of its unique physical structure, AAC provides much greater thermal insulation than conventional masonry. A bare 8-inch thick AAC wall actually provides a static insulation value of approximately R-8, with much higher dynamic insulation values achievable utilizing the principles of thermal mass.

Thermal insulation. The air bubbles and low density give AAC excellent thermal insulation properties, and in most cases the use of supplementary insulation can be avoided. The thermal conductivity, k, is the (time) rate of heat transfer by conduction, through a unit thickness, across a unit area, for a unit difference in temperature. Units of k are Btu-in/hr-ft2-¼F, or Watts/meter-¼Kelvin. The lower the density the lower the thermal conductivity "k" and the better the thermal performance. Thermal conductivity is also dependent on the moisture content of the material: it increases with increase in moisture content. AAC is about 10 times better than ordinary dense concrete with respect to heat conductivity. Additionally, AAC has good thermal inertia which in combination with the good thermal insulation properties results in reducing the temperature extremes experienced in a building. Furthermore, the air tightness of the construction, achievable due to the high tolerances of the product, contributes to the energy efficiency of PAAC building system.