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Wool Gap Filler


In Stock




Energy saving


Money saving

Our wool gap filler is an alternative to traditional foam gap filler and can be used to fill any gaps around the home that may be letting those pesky draughts in.

Sold in 2m lengths and made of 100% moth-proof wool, this gap filler works particularly well to insulate cavities, gaps and cracks around doors, windows, joists and roof frames.  It can also help with sound insulation.

Using this gap filler will not only make your home feel cosier but it will make it more energy-efficient too!

Length: 2m, Thickness: 20mm-60mm

Product description & details

wool gap filler home insulation
wool gap filler home insulation

Shipping & Returns

Standard delivery

  • Free when you spend over £30 or £3 for orders under £30.
  • Delivered within 2-4 working days from the date of dispatch.
  • Smaller items will be delivered using Royal Mail 48. Larger items will be delivered by Fedex or ParcelForce.
  • Delivery Monday to Saturday (excluding bank holidays).

Expedited delivery

  • £6 for all orders.
  • A fully tracked service, delivered within 1-3 working days, from the date of dispatch.
  • Smaller items will be delivered using Royal Mail 24. Larger items delivered via FedEx or ParcelForce.
  • Delivery Monday to Saturday (excluding bank holidays).

View our full Shipping Policy


  • We have a 60-day return policy, which means you have 60 days after receiving your item to return it.
  • To be eligible for a return, your item must be in the same, re-sellable condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
  • The postage cost for the return will need to be covered by yourself (please keep the proof of postage until your return has been processed).

View our full Returns Policy

Buy Land Plant Trees

At the core of Chimney Sheep is our Community Interest Company, Buy Land Plant Trees (BLPT). For every purchase you make with us, 20% of the profit facilitates the planting of trees on agriculturally poor land in Cumbria.

We set up BLPT in 2019 as a ‘boots on the ground’ tree planting initiative. The company is run by us and the tree planting is done by us. We do it to help you and us to reduce our impact on the planet. The trees we plant reduce CO2 output as well as contribute to the reduction of flooding and the creation of habitats for wildlife.

BLPT isn’t a tick box exercise nor a distant and detached carbon offset company. In fact, this is as much part of our business as the products we sell and is an integral part of our ethos. We are big believers in the phrase ‘think globally, act locally’ and want to make a genuine difference


Customer Reviews

Don't just take our word for it. Take a look at the customer product reviews below.

Customer Reviews

Based on 16 reviews
Ann Wilson
Gap filler

I’d been looking for an eco filler for the gaps under our new windows - I ordered this and was very impressed with the product - easy to use and it works - and the service by chimney sweep was second to none!

Covent Garden Area Trust
Good product

Easy to use and to tailor to the size of the gap you're trying to fill. It has made some difference to the temperature of the room; the window is very old and ill fitting.

Pauline Holmes
Perfect for filling all sizes of gaps

We had a big gap under our windowsill and this was easy to use to fill the gap. I also filled a tiny gap between the floor and skirting it has really helped to make the room cosier. It is also very easy to do.

Kathryn Lemin
Does what it’s supposed to

I used this to fill the letterbox on my front door as it was allowing draughts from the single skin porch into the house. Now warmer in our entrance stairwell & lounge.


Very good for filling gaps at back of the toilet and under skirting board

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