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Updated by ExtrudaSeal on Apr 18, 2016
Headline for Types of Weather Seal for Windows and Door Systems
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Types of Weather Seal for Windows and Door Systems

The question of “how important is weather sealing?” is simple to answer; weather sealing is very important. Air leaks as a result of windows and doors that are not properly sealed can account for a large percentage of a home’s overall heat and cooling loss – this is a lot of wasted energy. There are a number of different styles of weather seal that are designed to prevent moisture leaks and draughts:


Hydrophilic water seals

Hydrophilic water seals are commonly used for glazing, construction and a wide range of other applications. Hydrophilic materials provide excellent weather resistance as they swell up at rates of between 300% and 1000% when in contact with water and other liquids, providing an efficient seal.


Wool Pile

Wool Pile

In many cases of weather sealing, wool pile is also utilised alongside gasket seals. Wool pile can be manufactured to suit a wide range of aluminium, uPVC and timber applications, including windows, doors and bi-fold door systems. Triple fin wool pile has a number of advantages compared to standard wool pile weather strips – it provides a tighter seal, improves air filtration, improves noise insulation and is easy to install.


E gaskets

E gaskets can be much more challenging to replace than other glazing seals as they are clipped into the frame of a range of windows and door systems.


Wedge gasket weather seals

Wedge gaskets are commonly used as a weather seal for window frames and a range of doors, including aluminium, timber and uPVC systems. They can carefully, but quite simply be replaced should there be a leak in the existing gasket.


Bubble and Flipper seals

Bubble and Flipper seals

Bubble, Flipper and Bubble-flip glazing seals are commonly found as they are usually the easiest weather seals to replace for doors and windows. The old seals can simply be pulled out, whilst a new seal can be pushed into the empty gasket groove to ensure the window is efficiently sealed against the weather, draughts and energy loss.