How To Measure Chimney For Chimney Sheep

Introduction: Why Measure Your Chimney for a Chimney Sheep

When it comes to solving heat loss issues, a Chimney Sheep can be an effective solution. This practical device acts as a draft excluder, blocking cold air from entering your home through the chimney. However, to ensure a proper fit and optimal performance, it is crucial to measure your chimney accurately. In this article, we will guide you through the steps on how to measure your chimney for a Chimney Sheep.

Gather the Necessary Tools

Before you begin measuring your chimney, it is essential to gather the necessary tools. The following items will be required:

1. Tape Measure: A tape measure will enable you to determine the height and width of your chimney opening accurately.

2. Ladder: Depending on the height of your chimney, you may need a ladder to reach the opening safely. Ensure you take proper safety precautions when using a ladder.

3. Pen and Paper: These will be used to record your measurements and any other relevant notes.

Step 1: Measure the Height of the Chimney Opening

To begin, carefully position yourself on the ladder and extend the tape measure vertically. With the tape measure held securely against the inside face of the chimney, measure from the bottom to the top of the opening. Make a note of this measurement as it will determine the height required for your Chimney Sheep.

Step 2: Measure the Width of the Chimney Opening

Once you have measured the height, it is time to determine the width of the chimney opening. Position yourself in front of the chimney and extend the tape measure horizontally. Measure the distance across the opening, from one side to the other. Note down this measurement as well.

Step 3: Check for any Irregularities or Obstructions

Before finalizing your measurements, it is important to carefully inspect the chimney opening for any irregularities or obstructions. Look out for protruding bricks, uneven surfaces, or obstacles that may affect the fit of the Chimney Sheep. Record any notable observations on your paper to keep them in mind during the installation process.

Step 4: Consider the Type of Chimney Sheep

Now that you have accurate measurements of your chimney opening, it is time to consider the type of Chimney Sheep that will best suit your needs. There are two main variations to choose from:

1. Standard Chimney Sheep: This type is suitable for chimneys with a regular opening shape and no notable irregularities. If your chimney has a standard rectangular or square opening, a standard Chimney Sheep should work perfectly.

2. Custom Chimney Sheep: If your chimney has irregularities or an unconventional shape, a custom Chimney Sheep may be necessary. These are specially tailored to fit chimneys with unique openings, ensuring optimal performance and energy efficiency.


Measuring your chimney accurately is crucial to ensure a proper fit and maximum effectiveness when installing a Chimney Sheep. By following the steps outlined in this article, you can easily measure the height and width of your chimney opening. Paying attention to any irregularities or obstructions and considering the type of Chimney Sheep required will help ensure the best possible outcome in blocking cold air drafts and saving energy. So, grab your tape measure and get ready to make your home more comfortable and energy-efficient with a properly installed Chimney Sheep.

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