Double Wall Chimney Pipe Installation

We recommend bracing vertical venting every 5 to 6 feet.

Double wall chimney pipe installation.

As you assemble each pipe section secure the outer wall using three 10 3 4 self tapping stainless steel sheet metal screws. Continue assembly maintaining the clearances to combustibles. Now it s time to start putting our insulated double wall class a chimney pipe together. If at all possible avoid offsets that restrict the natural draft.

The screws should be equidistant around the pipe perimeter. To make the transition from insulated chimney pipe to single wall stove pipe a universal pipe adapter will be needed. A through the wall installation requires additional components wall thimble tee w cap tee support and wall straps. Locate the end of the pipe that has the insulation recessed down.

It may be necessary to attach the adjustable length dwb18a section to the chimney ceiling support prior to installing the sections. A cold exterior chimney will produce less draft and will generate more creosote. Install the chimney pipe in the interior of the structure whenever possible.