Finding the Right Replacement Aluminium Seals for Windows and Doors 93

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Aluminium is commonly used for the formation of doors and windows for numerous reasons. Bearing in mind it is a metal, aluminium is highly lightweight, yet, its greatest attributes are its durability and its means to resist corrosion. Since doors and windows are regularly confronted with the the environment, this is essential.

While aluminium is a perfect material for exterior purposes, to keep heat indoors and cold and moisture outside, sealing solutions are a necessity. Not having aluminium seals for doors and windows, homeowners and businesses would be faced with draughts, rattling windows and water leaks in wet conditions. Window seals are most commonly produced from rubber and plastic materials, such as thermoplastic elastomer, thermoplastic polyurethane, PVC, and Nitrile rubber.

If developing door and window seals, it's crucial to select sealing materials that are intended for outdoors and sealing applications. For exterior windows and doors, a resistance to UV, ozone and normal abrasion is a must, along with sufficient elasticity and compression set capabilities to provide a tight seal and work as an insulator from the elements. Inadequately sealed windows and doors are less likely to prevent draughts and are likely to cause a build-up of damp between double glazing panes or around a door.

How are aluminium seals developed?

In general, door and window seals require a consistent cross section to make sure all areas are properly sealed. An effective way to achieve this is to use an extrusion process, where the raw rubber or plastic material is pushed through a specially created die using the suitable cross section. Seals are then able to be cut down to size to supply an accurate length to accommodate each window or door.

Changing aluminium seals

Whilst aluminium door seals are designed and constructed to remain long-lasting solutions against draughts and damp, dependent on the material applied, over time seals and extrusions may fail. A large number of manufacturers of windows and doors use standard or very similar styles of aluminium seal and as a result, failed seals can merely be replaced with little issue. In some cases, a direct replacement is available in stock, or at a minimum, a good replacement can be found by knowledgeable staff if you give them a sample.

Whilst the most challenging process can often be acquiring the best aluminium seals to fit a specific door or window, depending on the specific design of an extrusion, seals can differ in how complex they are to replace.


• Basic �bubble' seals are generally very easy to replace. Thanks to the simple cross section of the extrusion, the existing seal can be pulled straight out and substituted with the new. • On the other hand, an �E' gasket, also regularly used as an aluminium seal, is one of the toughest extrusions to replace because they are clipped into a window frame.

If you are wanting replacement aluminium seals, you can send a sample to ExtrudaSeal and take advantage of their free matching service.

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