How do I determine the correct size for my fireplace flue?

Measure your flue's interior and choose a Flueblocker the same size or slightly larger. The wool pad pressure-fits and can be trimmed with scissors. Use the sizing guide to match your flue shape—round, square, or rectangular.

How difficult is installation? Do I need any special tools or supports?

Choose an install spot you can reach by hand. Measure with a tape or ruler. A narrow area above the firebox is ideal. For higher spots, use 6” handle extenders to place the wool pad securely.

Will the product completely block cold drafts, odors, and heat loss?

When fitted correctly, the FlueBlocker stops heating/cooling loss, drafts and odors from a dormant chimney. To eliminate odor, make sure you vacuum out all the ash from the firebox and seal any ash chute or outside intake attached to the firebox.

Which is right for my situation – a FlueBlocker or a Chimney Balloon?

The Flueblocker is a durable, reusable chimney plug that handles moisture and is ideal for long-term use. The Chimney Balloon offers a tight seal and a breakaway feature for safety if a fire is lit accidentally.

How durable is the material? Is it worth the price?

Chimney is harsh, moist, acidic environments. The Flueblocker uses coarse ionized Herdwick wool and durable resin hardware to seal air, wick moisture and resist odors. Chimney Balloons use a heat-reactive laminate to withstand chimney air conditions.

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Flueblocker Chimney Sheep 10 inch Round Chimney Draught Excluder

Flueblocker Chimney Sheep 10 inch Round Chimney Draught Excluder

Product ID: 411074598

Details

Brand
Chimney Sheep
Colour
Grey
Material
Wool
Number of pieces
1
Product dimensions
25L x 25W x

💸Saves ~£60/year on energy bills

🔥Blocks 5% household heat loss

🦝Stops wildlife & debris entry

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฿4251

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Lock in warmth, lock out the chill — your chimney’s new best friend!

SILENCE THE WIND - Eliminates annoying chimney wind noise for peaceful living
SEAL IN COZY WARMTH - Keeps warm air inside, cold draughts out for a snug home vibe
SLASH YOUR ENERGY BILLS - Cut costs by around £60 annually with smarter heat retention
WILDLIFE PROOF YOUR HEARTH - Prevents critters and debris from invading your chimney space
PERFECT FIT FOR ROUND FLUES - Designed for flues up to 9” diameter; always size up for max efficiency

The Flueblocker Chimney Sheep 10 inch Round Chimney Draught Excluder is a lightweight, no-battery-needed solution that reduces heat loss by 5%, cuts energy bills by approximately £60 annually, and blocks wind noise and unwanted wildlife from entering your chimney. Ideal for round flues up to 9 inches in diameter, it’s a smart, eco-friendly upgrade for any home seeking comfort and savings.

Specifications

ASIN	B00G48ESRS
Brand Name	Chimney Sheep
Color	Grey
Customer Reviews	4.3 4.3 out of 5 stars (1,193)
Global Trade Identification Number	00700115980159
Included Components	Chimney Sheep 10 inch round chimney draught excluder
Item Dimensions L x W x Thickness	25L x 25W x 25Th centimeters
Item Type Name	Chimney Draught Excluder
Item Weight	181 g
Manufacturer	Chimney Sheep
Manufacturer Part Number	CA041
Material Type	Wool
Model Number	CA041
Number of Pieces	1
UPC	700115980159 799493546323

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