How To Cut Hole In Roof For Stove Pipe

So this ended up being a rather large hole especially when compared to the smaller diameter of the single wall pipe.

How to cut hole in roof for stove pipe.

To find pipe end shape not hole in sheet enter 0 for sheet thick. A single wall pipe will require 18 inch clearance to the ceiling while double wall pipe needs an 8 inch clearance to the ceiling. This is the double wall pipe so it is thicker than the interior single wall pipe. Drill a small hole in this spot to mark the chimney s center.

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. The roof flashing may be the hardest part to installing a chimney pipe for a wood burning stove. The hole needs to be taller than your pipe diameter as the pipe isn t passing through the roof at a perpendicular angle.

Then shine a bright flashlight through the pipe from the. You will need to cut the opening to the roof to extend the chimney pipe. Hold the pipe in place and run it up close to the roof decking. Nobody wants a leaky roof or the damage it could cause to yo.

Building code requirements state the opening had to be larger 1 or 2 than the pipe on all sides. There is an easy trick for drawing out the hole. 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. Select angle increment and hit full set to generate and print a full set of oval templates for currently entered pipe diameter.

Place the chimney where it would be related to the stove and mark the center of the chimney on the ceiling. A double wall pipe needs a 12 inch clearance space. Cut and use template to mark and cut sheet to fit pipe at angle.