How To Cut Hole In Roof For Stove Pipe

The roof flashing may be the hardest part to installing a chimney pipe for a wood burning stove.

How to cut hole in roof for stove pipe.

A double wall pipe needs a 12 inch clearance space. Cutting any size hole in a roof is bad enough. Then shine a bright flashlight through the pipe from the. Hold the pipe in place and run it up close to the roof decking.

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. This is the double wall pipe so it is thicker than the interior single wall pipe. There is an easy trick for drawing out the hole. You will need to cut the opening to the roof to extend the chimney pipe.

A single wall pipe will require 18 inch clearance to the ceiling while double wall pipe needs an 8 inch clearance to the ceiling. The hole needs to be taller than your pipe diameter as the pipe isn t passing through the roof at a perpendicular angle. 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. The problem is that a 3 inch round pipe needs an oval hole in a sloped roof.

To find pipe end shape not hole in sheet enter 0 for sheet thick. So this ended up being a rather large hole especially when compared to the smaller diameter of the single wall pipe. Place the chimney where it would be related to the stove and mark the center of the chimney on the ceiling. Nobody wants a leaky roof or the damage it could cause to yo.

Cut and use template to mark and cut sheet to fit pipe at angle. Select angle increment and hit full set to generate and print a full set of oval templates for currently entered pipe diameter. Building code requirements state the opening had to be larger 1 or 2 than the pipe on all sides.