Wool Gap Filler
SKU: 71668663606

Wool Gap Filler

Sale price$9.45 Regular price$10.50
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Wool Gap FillerWhere can I use this Wool Gap Filler? Our wool gap filler is great for filling any gap, crack or cavity around your home but is particularly good for gaps between window & door frames and the wall. Gaps often occur in these areas when double glazed windows and doors have been poorly fitted. It works well in these scenarios as it is sold in lengths and is lightly bound with string to ensure it holds its shape. The gap filler suitable for larger gaps

Where can I use this Wool Gap Filler?

Our wool gap filler is great for filling any gap, crack or cavity around your home but is particularly good for gaps between window & door frames and the wall. Gaps often occur in these areas when double-glazed windows and doors have been poorly fitted. It works well in these scenarios as it is sold in lengths and is lightly bound with string to ensure it holds its shape.

The gap filler suitable for larger gaps than our wool draught seal tape as it is thicker and be stuffed into deeper cavities if needed. If you just have very tiny cracks around your doors and windows, then our draught seal tape would be better suited. We had a door in our warehouse with quite a bit of a gap, so we used this wool gap filler and it did the trick!

You can read more about the benefits and potential financial savings of window and door draught-proofing on the Simple Energy Advice website.

 

How do I install this Wool Gap Filler?

Very easily! Once you have identified the gap that needs filling, tightly stuff it with the wool until the gap ‘full’. If it is a long, continuous gap along a door or window frame, then you can use a continuous length of the gap filler to ensure the whole gap is filled.

 

Why should I use this wool gap filler versus traditional foam gap filler?

We have tried this gap filler and think that it works just as well as traditional foam gap filler but comes with a few more benefits, so here they are:

  • Traditional foam gap filler that you often find in DIY shops is often made from combining isocyanates and polyols using an energy-intensive process. Wool on the other hand is natural and as long as we have sheep, we’ll have wool!
  • Installed incorrectly, traditional foam gap fillers can cause damp and water damage within a home. Wool is naturally breathable which ensures that wherever and however it is installed, it should not cause damp in your home.
  • The chemicals in traditional foam gap fillers often cause irritation to the skin and respiratory system, requiring safety masks and gloves when installing it. Wool is safe to touch and work with, requiring no safety equipment and causing no irritation to the eyes, skin or lungs. In fact, wool has the added benefit of being able to lock away pollutants such as volatile organic carbons.
  • When the time comes to dispose of traditional foam gap filler, it has to go into landfill, and it is unable to biodegrade. Wool, on the other hand, is both biodegradable and compostable.

 

Where else in my house should I look to draught-proof?

Draught can sneak in from anywhere! If the gaps the draughts are coming through aren’t obviously visible, then use a Smoke Pencil which will show you exactly where the cold air is coming in. It is a really quick and easy way to identify where you need to draught-proof.

If you have an open chimney, definitely look at draught-proofing it! An open chimney causes other draughts in your house to become worse and it could also be your home’s biggest source of heat loss! So why not have a look at our Chimney Sheep® chimney draught excluders which are made of Herdwick wool and will work hand-in-hand with this and our other draught-proofing measures to make sure your home is as toasty and comfortable as it can be!

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71668663606

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Raquel Hall
Draper, US
★★★★★ 4
Great fit but expensive
Size: Medium, Color: (252) Blush Beige / White / Castlerock
These are really great socks. I love them, but they are definitely pricey.
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Reviewed in the United States on March 30, 2026
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LacyConner
Bozeman, US
★★★★★ 5
Great socks!
Size: Medium, Color: (252) Blush Beige / White / Castlerock
Love these socks so much I got a second package. I like how thin and airy they are and they never slide down my heel. For thin socks they’re pretty durable.
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Reviewed in the United States on August 16, 2025
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Cor vW
New York, US
★★★★★ 5
Great
Size: Medium, Color: (001) Black / Black / Pitch Gray
The best pair of work / workout / casual socks I've bought in long time! They're no show on all my sneakers, incredibly comfortable and they never move.
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Reviewed in the United States on October 7, 2025
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The bookish health nut
Grantham, US
★★★★★ 5
Absolutely Essential for Any Athlete or Gym-Goer!
Size: Large, Color: (035) Steel / White / Black
I recently purchased the Under Armour Unisex-Adult Training Cotton No Show Socks 6 Pack, and I must say, they've become an indispensable part of my workout gear. Here's why these socks are a game-changer: Comfort Above All: These socks are incredibly comfortable. Made from a blend of cotton and synthetic fibers, they provide just the right amount of cushioning without feeling bulky. Whether I'm running, lifting weights, or doing yoga, my feet feel supported yet free. No Show, All Go: True to their name, these socks stay perfectly in place without slipping down into my shoes. This is crucial for maintaining a professional look at the gym or during sports activities. No more embarrassing sock peeks or having to constantly adjust them. Durability: For the price, these socks hold up remarkably well. I've washed them multiple times, and they haven't lost their shape or elasticity. They've survived the rigors of both my workouts and laundry day. Breathability: The material mix allows for excellent breathability. My feet stay dry and cool, reducing the chances of blisters or discomfort during long sessions. Pack Value: Getting six pairs in one go is fantastic. It means I always have a fresh pair ready, which is perfect for someone like me who works out frequently. Fit for All: These socks fit true to size and are designed to be unisex, making them a versatile choice for anyone looking to upgrade their sock game. If you're in the market for socks that combine comfort, performance, and style, look no further. Under Armour has nailed it with these no-show socks. They've quickly become a staple in my wardrobe, and I find myself reaching for them over any other sock I own. Highly recommended for anyone serious about their fitness routine or just wanting reliable, high-quality socks. 5 out of 5 stars - These socks are a must-have!
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Reviewed in the United States on August 25, 2024
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DLynn
New York, US
★★★★★ 5
My Husband’s Favorite Socks
Size: Large, Color: (035) Steel / White / Black
The Under Armour Unisex Training Cotton No Show Socks have become my husband’s absolute favorite socks—and he’s pretty picky about socks. Comfortable Fit: They’re soft, comfortable, and fit well without being too tight. They stay in place all day with no slipping or bunching. Great for Everyday Wear: Perfect for workouts, walking, and everyday use. They provide just the right amount of cushioning without feeling bulky. Durable & Long-Lasting: These hold up really well through regular wear and washing. They keep their shape and don’t wear thin quickly. Reliable Under Armour Quality: You can tell they’re well made. Consistent quality that matches what you expect from Under Armour. Overall Impression: When someone has a favorite sock and keeps reaching for it, that says everything. These are comfortable, durable, and dependable.
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Reviewed in the United States on December 30, 2025

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