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How To Put A Chimney Through A Roof For A Wood Stove

How To Put A Chimney Through A Roof For A Wood Stove

If your home lacks a chimney, do you still want to enjoy the pleasure of a wood-burning stove? A non-issue! Installing one is straightforward. Allow us to give a step-by-step instruction on installing a wood stove chimney through the roof on your own before you commit to an expensive professional installation.

You can certainly DIY your wood stove chimney if you have the necessary tools and pay attention to detail. Despite being a laborious process, it just calls for fundamental building methods. Simply put, all you need to do is:

  • Find the middle of your chimney pipe, mark it, and cut through it to fit it into the ceiling support box.
  • Repeat the procedure on the roof exterior for the adjustable roof flashing.
  • Put the pipe’s parts together and run it through the flashing.
  • Complete the insulating process, then put the stove pipe together.
  • To transition with the chimney pipe, fit it in the box that supports the ceiling.

You have it now! a wood stove that is straight and has a chimney that passes through your roof.

That might have sounded simple enough. You do, however, need to use caution. It all depends on how comfortable you are using the construction techniques. You can quickly install a chimney through the roof with the right instructions.

Materials Required

Make sure you have everything it need before you start the actual process. The following tools are necessary for an installation of a well-sealed chimney, even if most cutting instruments can be replaced based on availability.

  • The actual wood stove and chimney pipe construction.
  • The extension for both pipes’ transition will be provided by a ceiling support box that extends downward.
  • Finding and identifying the ceiling’s center will need the use of a plumb bob.
  • Unwanted chemicals won’t be able to enter the chimney through any open paths thanks to an adjustable roof flashing.
  • Together, a storm collar and a chimney rain cover will stop the flow of melted snow and airborne moisture.

Setting Up The Stove

How To Put A Chimney Through A Roof For A Wood Stove

You must first choose the exact location for your wood stove. Leave it alone if you’ve previously installed it. To make the most of the heat, the general guideline is to choose the area of the house that is most comfortable to live in.

Central Point

The chimney pipe should now be immediately placed on the stove connection. To determine the exact location of the pipe’s center, extend a plumb bob from the ceiling. Use a chalk box in its place. The pipe must be 18″ away from combustible items, as required by NFPA rules.

Using a plumb bob can be challenging for beginners, of course. Here is some illustrated guidance on how to utilize a plumb bob to assist you:

You must drill a hole into the roof sheathing to record your location. The indicated center will provide more accuracy later on during the cutting. Utilize a ceiling support box for this.

Through the opening, insert the support box, and fasten it to the ceiling joists. The single stovepipe should be slid into the box to help you decide where to cut the hole in the roof. Alternately, you can mark the hole’s diameter directly on the roof’s outside.

The measures must adhere to the construction code and the company’s criteria. You now have the cut location in any case. Cut through with a jigsaw or Sawzall.

Modifiable Roof Flashing

How To Put A Chimney Through A Roof For A Wood Stove

Identifying The Location
Place your adjustable roof flashing on top of the holes you made in the roof. It should be lowered a few inches before you mark the top edge with a pencil.

Get a pair of metal snips and cut through the line up to the width of the flashing, leaving 2″ of excess shingles on either side to create ample room.

Immediately, the roof’s flashing needs to be adjusted. One method is to slide the flashing below the shingles by using a generous amount of silicone. Apply silicone to each screw before attaching it to the roof deck.

The conventional caulking method can also be used to modify the flashing. Place it where you want it and caulk the base with a half-inch thickness. Along the edge that will come into contact with the roof’s surface, apply a second half around its circle.

Once you depress it, your adjustable roof flashing will be ready and in position.

The Pipe For The Wood Stove
Take out your instruction book, demonstrate your construction expertise, and put your wood stove chimney pipe together. Make sure the pipe adapter is inserted into the pipe’s male end. This section has insulation that is recessed. The installation of the stove pipe will be simpler in the future thanks to the adaptor. Once everything is prepared, carefully insert the first section into the support box through the flashing.

Completing The Work On The Roof
Your final action on the roof will be to secure the rain cap and storm collar.

To seal the collar with the chimney pipe, use a thick enough silicone layer and a 5/16 nut driver for the rain cap. These precautions will guarantee that the route is free of undesired materials such as water, debris, and insects.

The Pipe For Single-Wall Stove
Come inside, descend the roof, and assemble your single-wall stove pipe. On the chimney pipe, fasten the pipe nut to the pipe adaptor’s bolt. Any additional pipe and hardware lengths should be attached. Ensure that your stove pipe descends directly to the stove.

Finish the setup off by wrapping the trim collar around the support box. The collar can be screwed to the box.

The installation process is now complete, and you are left with the actual implementation. There are still a few more technicalities in this process, besides your national building code. Please keep them in mind as we discuss their rules.

While the instructions describe how to erect a chimney, having some visual assistance might improve your success rate. As a brief disclaimer, a plumb bob is not used in the video. Our list may possibly be incomplete for some components. It is still useful as a visual guide to go along with the aforementioned tasks, though.

How Far Up From The Roof Should A Wood Stove Chimney Be?

A wood stove chimney must always be three feet or more away from the roof’s uphill side in order to comply with requirements. In addition, it must be 2 feet away from any obstructions within a 10-foot circle. The rooftop, any nearby buildings, or even overhanging trees may serve as these impediments.

Is It Necessary For A Wood Stove Pipe To Rise Vertically?

How To Put A Chimney Through A Roof For A Wood Stove

The pipe for a wood stove needs to be as straight and brief as possible. It must be upright for at least 80% of the space. If so, at most one or two 90-degree angles can be incorporated into the design.

The horizontal portion shouldn’t protrude from the linear foot by more than a quarter. These safety measures are necessary for an effective drafting procedure.

Does A Chimney Inspection Need To Be Done?

Before purchasing a chimney, everyone should inspect it. You must check the chimneys, fireplaces, and vents once every 12 months after installation. Any place that needs maintenance that you discover throughout the inspection must be properly attended to.

How Would It Be If I Already Had A Chimney?

A chimney that has previously been installed is entirely suitable for use with a wood stove. Just remember that the stove insert or stovepipe you purchase must fit the size of the chimney.


Willpower is the only thing standing between you and your flawlessly installed wood stove chimney pipe. You have all the information you may want from us. Positioning the chimney shouldn’t be too difficult with a little research. We sincerely hope that you learned something from and could apply it.

How To Put A Chimney Through A Roof For A Wood Stove

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Written by HVAC Contributor

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