How To Cut Hole In Roof For Stove Pipe

Drill a small hole in this spot to mark the chimney s center.

How to cut hole in roof for stove pipe.

When installing a chimney for a wood stove on a metal roof you ll first need to assess the position. There is an easy trick for drawing out the hole. Nobody wants a leaky roof or the damage it could cause to yo. Now that the hole was cut my friend ran back down the ladder and up into the attic so that we could connect the vent pipe through the roof.

To find pipe end shape not hole in sheet enter 0 for sheet thick. Select angle increment and hit full set to generate and print a full set of oval templates for currently entered pipe diameter. The roof flashing may be the hardest part to installing a chimney pipe for a wood burning stove. Cutting any size hole in a roof is bad enough.

Then shine a bright flashlight through the pipe from the. A single wall pipe will require 18 inch clearance to the ceiling while double wall pipe needs an 8 inch clearance to the ceiling. So this ended up being a rather large hole especially when compared to the smaller diameter of the single wall pipe. The problem is that a 3 inch round pipe needs an oval hole in a sloped roof.

When calculating your chimney pipe size subtract 1 5 inches for each joint overlap. Building code requirements state the opening had to be larger 1 or 2 than the pipe on all sides. You will need to cut the opening to the roof to extend the chimney pipe. This is the double wall pipe so it is thicker than the interior single wall pipe.

When plumbing pipes and chimneys have to go through sloped roofs they are always cut fairly large just to make sure that the pipe will pass through. Hold the pipe in place and run it up close to the roof decking. A double wall pipe needs a 12 inch clearance space.