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.

Cutting any size hole in a roof is bad enough. A double wall pipe needs a 12 inch clearance space. When calculating your chimney pipe size subtract 1 5 inches for each joint overlap. A single wall pipe will require 18 inch clearance to the ceiling while double wall pipe needs an 8 inch clearance to the ceiling.

Nobody wants a leaky roof or the damage it could cause to yo. Then shine a bright flashlight through the pipe from the. 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.

Building code requirements state the opening had to be larger 1 or 2 than the pipe on all sides. Place the chimney where it would be related to the stove and mark the center of the chimney on the ceiling. When installing a chimney for a wood stove on a metal roof you ll first need to assess the position. Select angle increment and hit full set to generate and print a full set of oval templates for currently entered pipe diameter.

So this ended up being a rather large hole especially when compared to the smaller diameter of the 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. The hole needs to be taller than your pipe diameter as the pipe isn t passing through the roof at a perpendicular angle. You will need to cut the opening to the roof to extend the chimney pipe.

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. The roof flashing may be the hardest part to installing a chimney pipe for a wood burning stove. Hold the pipe in place and run it up close to the roof decking.