Our class a chimney systems sets the standard in quality, design, and performance for chimney systems. Using a special blanket insulation, Class A Chimney keeps the outer wall of the chimney cool while ensuring high flue gas temperatures for optimum draft performance. This also eliminates hot spots common with loose-fill type insulations.
In the event of a creosote fire, this compressible blanket insulation permits the chimney liner to expand outward. This free-floating inner liner design also permits the liner to expand lengthwise eliminating buckling and loss of structural integrity associated with some solid-pack type chimneys.
The outer wall of Class A Chimney, in 5"-8", is .016" 430-alloy stainless steel and the inner liner is .020" 430-alloy stainless steel.