You will need to cut the opening to the roof to extend the chimney pipe.
How to install a chimney pipe through the roof.
Place the chimney where it would be related to the stove and mark the center of the chimney on the ceiling.
Chimney planning step 2.
While you re still on the roof attach the storm collar to the chimney pipe.
When installing a chimney for a wood stove on a metal roof you ll first need to assess the position.
Typically a chimney pipe must terminate at least 3 feet above a roof and the cap must be at least 10 feet from any part of the roof.
Drill a small hole in this spot to mark the chimney s center.
Determine the number of chimney pipe lengths required the chimney must extend at least 3 feet above the highest point where it passes through the roof and be at least 2 foot higher than any part of the building within a horizontal distance of 10 feet figure 2.
Obtain addition sections of stove pipe if necessary.
Make sure to put a bead of silicone around the storm collar where it meets the chimney pipe.
The chimney pipe must protrude through the roof a minimum of 2 feet and it must be at least 10 feet away from the roof line.