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.

The roof flashing may be the hardest part to installing a chimney pipe for a wood burning stove. There is an easy trick for drawing out the hole. Cutting any size hole in a roof is bad enough. Hold the pipe in place and run it up close to the roof decking.

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. 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.

Place the chimney where it would be related to the stove and mark the center of the chimney on the ceiling. This is the double wall pipe so it is thicker than the interior single wall pipe. To find pipe end shape not hole in sheet enter 0 for sheet thick. Drill a small hole in this spot to mark the chimney s center.

Then shine a bright flashlight through the pipe from the. Building code requirements state the opening had to be larger 1 or 2 than the pipe on all sides. When installing a chimney for a wood stove on a metal roof you ll first need to assess the position. The hole needs to be taller than your pipe diameter as the pipe isn t passing through the roof at a perpendicular angle.

A double wall pipe needs a 12 inch clearance space. When calculating your chimney pipe size subtract 1 5 inches for each joint overlap. Nobody wants a leaky roof or the damage it could cause to yo.