A double wall pipe needs a 12 inch clearance space.
Installing chimney pipe in metal roof.
No more than five feet of unsupported pipe is permitted.
Pipe we used retails for about 118 that s a little over 3 per inch.
When installing a chimney for a wood stove on a metal roof you ll first need to assess the position.
Chimney pipes on metal roofs must be flashed in order to create a watertight seal around the pipe and prevent leaks through the roof.
Open valleys have metal flashing to protect this critical area of the roof.
The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.
You will need to cut the opening to the roof to extend the chimney pipe.
The rubber boot is trimmed to fit around the pipe and then secured to the roof with screws and sealant.
You can call us with any questions you may have.
High winds bend and damage unsupported pipes.
A single wall pipe will require 18 inch clearance to the ceiling while double wall pipe needs an 8 inch clearance to the ceiling.
Drill a small hole in this spot to mark the chimney s center.
I prefer to use a dsa flashing also known as a dead soft aluminum flashing.
In this video i cover installing a roof boot for a vent pipe in a metal roof.
Chimneys and metal roofing one of the positive benefits of a properly installed metal roof is that it will be flashed in order to be watertight against roof.
Following is the proceedure for installing the dsa flashing.
Any pipe installation above a roof that is unsupported by a chimney chase needs proper support above the roof line.
The big advantage of a metal chimney is ease of installation with minimal site modification.
Place the chimney where it would be related to the stove and mark the center of the chimney on the ceiling.
And there s the cost of the roof and support accessories.
This flashing is super thin and very flexible to curve around the humps in the metal roofing.
Many manufacturers offer rigid dual leg brackets to anchor pipes to the roof.
When calculating your chimney pipe size subtract 1 5 inches for each joint overlap.
How to install a flashing on a metal roof.
The flashing can be installed quickly and easily with kits that use rubber pipe boots.
However this convenience carries a price.
