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How to Use a Door Brush Seal to Reduce Draughts

Graeme Clarke July 24, 2018 Draught Seals

One type of draught seal that a lot of people use under their doors is the door brush seal. This type of seal consists of a panel of wood, metal, vinyl or other material, with brush hairs that sweep along the edge of the seal. The panel and the bristles, which could be synthetic or natural, help to block cold air currents just like other types of draught seals.

 

Because the brush component is flexible, it can also easily sweep across the floor when the door opens or closes, offering easy operation of the door whilst still providing decent protection against draughts.

 

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Here are a few tips to keep in mind to help you get the most out of your door brush seal.

 

 

Look for a Door Sweep with a Double Fin Seal


There are different types of brush seals for doors, many of which simply have a flat, rigid surface that connects to the brush. In order to get a more dynamic draught proofing solution, you’ll want to use a double fin brush seal.

 

With the fin, all the bristles are better placed to slow down any wind currents. The second fin in the middle also stops some of the cold air currents from coming through.

 

 

Install Your Door Brush Seal on the Correct Side


It does matter what side you install your door brush seal on. Attach it to the wrong side and you won’t get as much draught protection.

 


Once you have made sure the door seal will fit perfectly with your door (you may have to cut the seal to ensure a flawless fit), you’ll have to attach it to the door with screws. This doesn’t always look attractive but it will help to block out some of the draughts.

  • For a door that swings inward, install the brush seal on the inside bottom edge.
  • If the door swings outward, attach it to the outside bottom edge of the door.

 

 

Use a Mohair Brush Seal


You can find draught seals with either a natural type of bristles, like mohair, or a synthetic brush. You’ll likely be the most pleased with a mohair door brush seal in the long-run. They may be slightly more expensive but the mohair works well to stop air currents. It is simply a cleaner brush – mohair is naturally antibacterial and the fibres easily absorb and release moisture. It is also long lasting; mohair is the most durable animal fibre.

 

Brush Door Seals Work When There Is Zero Compression


Brush seals are best suited when you have a small enough space so the brush part will crush all the way down. We often use a different type of draught seal in order to stop cold air currents more effectively and to get acoustic benefits, but when there is zero compression, brush seals can be a useful option under doors.

 

If you want more impact, however, rubber seals will stop draughts and provide acoustic benefits. Rubber also helps to block out noise pollution along with the cold air. This way, you’ll achieve both a more comfortable living space and a quieter home.

 

To create a seamless look as well, we always machine the draught seals directly into the door during the retrofit process. That way, you get every benefit possible when you make the effort to draught proof your door.

 

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