How to choose and install rubber weatherstripping on doors and windows

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If you have questions about how to choose a good rubber weatherstripping to prevent draughts, filter noise and reduce your energy bill, you’ve come to the right place. In this quick guide, you’ll learn what models are available and how to install weatherstripping on your windows or in your garage without any hassle.

What is weatherstripping and why do you need it?

Weatherstripping is a flexible seal that fills the gap between a door or window and its frame. When installed on doors or windows, it blocks heat loss and prevents water infiltration, extending the life of the window or door. It is very useful in industrial or large-scale projects to improve the quality of the finish and the final result of the work carried out. A rubber weatherstripping is much more than just a ‘rubber strip’ between the door and the frame. Installing weatherstripping provides tangible benefits at home, in the office or in industrial environments. Among the benefits are energy savings, insulation, regulatory compliance and protection against elements such as moisture and dust.

Types of rubber weatherstripping for doors and windows

  • Rubber weatherstripping for exterior doors: made of EPDM or PVC, resistant to UV rays and sudden changes in temperature.
  • Types of weatherstripping for garage doors: U- or T-shaped profiles that compensate for small irregularities in the floor.
  • Self-adhesive foam weatherstripping: easy to install, ideal for old wooden windows.
  • Coextruded TPE profiles: combination of a rigid core and flexible wing, perfect for large-scale production.

How to install weatherstripping step by step

1. Measure and clean the surface

Remove any old sealant; a cloth with isopropyl alcohol will leave the area ready.

2. Cut to size

Use a sharp utility knife and a set square to make straight cuts that prevent poorly sealed joints.

3. Install on casement windows

To install weatherstripping on windows, stick the profile to the frame, starting at the top and working down the sides.

4. Install on sliding windows

To install weatherstripping on sliding windows, place the weatherstripping on the inner guide and on the bottom rail to reduce the gap.

5. Check the closure

Close and open the window several times; the weatherstripping should not rub excessively or come loose.

When to replace the rubber seal on your window

The right time to replace the rubber seal on a window is if you notice leaks or the rubber looks cracked. If you see this happening, it is time to replace the aluminium window rubber seal. A new profile will help you restore the seal and prevent unwanted condensation that can lead to damp.

Common mistakes when installing weatherstripping and how to avoid them

  • Using weatherstripping that is too soft for doors that are used frequently.
  • Not cleaning the surface: the adhesive will fail.
  • Installing the profile stretched (when it shrinks, it leaves gaps).

Do you need a customised weatherstrip?

At ISOGOM, we design and extrude customised profiles for industry and construction. Request a no-obligation quote now and discover how we can improve the efficiency of your project.

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