How to install a wood stove chimney through the roof

How to install a wood stove chimney through the roof. All wood-burning stoves require a well-designed and well-equipped chimney to maximize their performance and minimize the threat of dangerous fire and smoke.

There are two primary purposes of chimneys in wood-burning stoves; firstly, it provides a draft or a vacuum that helps draw oxygen required for the combustion into the stove.

Secondly, it discharges the products of combustion outside the living premises. Sometimes the heat and sparks are also discharged from the chimney.

This is the reason that the chimneys should be appropriately constructed.

How to install a wood stove chimney through the roofinstall a wood stove chimney through the roof

This step-by-step guide will quickly help you install a wood stove chimney through your roof. First, we list the tools that are essential for the chimney installation.

Essential tools

  • A chimney pipe
  • Ceiling support box that provides the extension for both pipes.
  • A storm collar that will work with a chimney cap to eliminate the water passing in.
  • A jigsaw or a saw to cut through the roof
  • A wood stove pipes
  • A plumbing bob to locate and mark the center point of the roof.

 The Installation Procedure

To begin the installation, you first have to decide the location of your wood stove; it is mainly in the busiest room of your house. 

1. Determine the center point

By placing a part of the chimney pipe straight above the stove assembly, spread a plumb bob starting from the ceiling to find the center point of the pipe that will go through your roof.

The pipe has to be at a distance of around 18”-19” from the combustible materials to ensure safety.

You will have to mark the drilling point in the roof using a ceiling support box. It will help you in later steps by giving you more accuracy. 

3. Gash the holes

Slide the single stovepipe in the support box through the opening to determine the location to cut the hole in the roof. For cutting, you can use a saw or a jigsaw.

You can also mark the width of the hole on your roof. Make sure the measurements are according to the terms and conditions of the manufacturing company and the building code. 

4. Adjustable roof flashing

With the help of putting flexible roof flashing on the holes, you have cut in the roof and locate the position. Cut through the line to the width of the flashing with around 2” on both sides.

Now set the flashing on the roof. Wind up by screwing it to the roof floor and applying silicone to all screws.

For assembling the chimney pipe, make sure to put the pipe adaptor into the central part of the pipe. After doing this, cautiously slide the first part into the support box through the flashing.

6. Connect the attachments

In this final step, connect the rain cap and the storm collar to your roof. Use a silicone layer and a nut driver to ensure that unwanted substances like rainwater, debris, snow, or pests do not pass through the chimney passage.

7. Checking the pipes

From inside, ensure that your stove pipe goes direct to the stove. Seal the setup, ideally using the support box.

You have now completed the installation of a wood stove chimney to the roof. After installation, you must check the chimney fireplaces and vents once every 12 months to avoid accidents.


How to install a wood stove chimney through the roof. It is not difficult to install a wood stove chimney on your roof. With a bit of research, positioning the chimney should be easy.

As per the standards, a wood stove chimney should always be 3 feet away from the side of your roof. Besides, you need to keep in mind the safety measures of your country to ensure safety.

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