A perfect fit

When inserted into an open chimney flue, the woollen pad of a Chimney Sheep compresses to fit perfectly in flues of all shapes and sizes.

Natural ventilation

Other chimney draught excluders require a small gap to be left in your flue to allow ventilation. Wool is breathable so no gap is needed, making a Chimney Sheep much more efficient. Once inserted into your chimney flue the 4.43 tog rated Chimney Sheep acts like a duvet, blocking 95% airflow into and out of your chimney, naturally permitting sufficient ventilation to ensure no damp issues occur.

Keeps warm air in

By blocking the majority of the air flow, it prevents the stack effect occurring. A Chimney Sheep stops warm air escaping through an open chimney and prevents cold air being pulled in via other gaps, helping a property retain its heat and feel more comfortable.

Makes your home feel more comfortable

By stopping your warm, heated air escaping and cold air getting in, a Chimney Sheep helps to keep your home at a pleasant temperature.

No more wind noise

Say goodbye to those horrendous howling winds coming through your chimney by plugging it with a Chimney Sheep (you can turn your TV volume back down now…).

Reduces your energy bills

A Chimney Sheep stops about 5% of your household heat from escaping, reducing your heating bill by about 60 GBP per year on average.

Cost effective energy savings

A Chimney Sheep is one of the most cost-effective ways to draught proof a home, paying for the cost of itself in 3 – 6 months. To compare, double glazing windows takes about 50-60 years to pay back on average.

Reduces your carbon footprint

A Chimney Sheep makes your heating more efficient, reducing your CO2 output by up to 250kg per year.

Stops wildlife and debris falling in

No more surprises in the hearth, a Chimney Sheep will catch it all and stop your curious cat getting stuck up the chimney too!

Long lasting

To make sure a Chimney Sheep lasts, the wool is treated with a unique ionic protect plasma which makes it 100% moth proof. Tests have shown that it should last 10 years or more.

Easy to remove and insert

If you have a fireplace that you use regularly, you can still have a Chimney Sheep as it is super simple to remove and insert as needed, using the handle attached. Before you have a fire, take it out and once your fire has finished and the chimney is cold, you can put it back in.

Step 1: Take a look at your chimney flue

• Use a head torch or prop up a regular torch to look up your flue. Ensure you have a tape measure to hand.
• Depending on the shape of your flue, depends on how you measure but don’t panic, we’ll talk you through it.

Step 2: Locate the nearest, narrowest opening of your chimney flue

• Regardless of the shape of your chimney flue, your Chimney Sheep always needs to go in the nearest and narrowest opening to you, even with a fire surround. This is where you'll need to measure.
• Your Sheep will come with a 15cm handle and 15cm extension rod giving 30cm of reach altogether. It’s important to make sure the safety dangle is visible so buy more extension rods if you’re pushing it more than 30cm up the chimney.

Step 3: Measure your flue

• Round flue: measure the diameter. You want a round Sheep that is an inch or so larger than the flue so it wedges in nicely.
• Square or oblong flue: measure the depth and width. You want a Sheep with depth and width measurements that are a couple of inches larger than your measurements so it wedges in nicely.
• ‘Odd-shaped’ flue (D-shaped, trapezium etc): measure the largest depth and width measurements of the opening (the longest and widest bits of the shape). You want a Sheep with depth and width measurements that are a couple of inches larger than your measurements so it fits snugly. The felt will squash the narrower parts of the flue to fit and create a seal.

Step 4: Choose your Chimney Sheep!

• Referring to the size chart in the listing images above, you'll be able to work out the size of Chimney Sheep you need.