Wedge Gaskets
Wedge gaskets are designed to be inserted between the glass and frame on uPVC windows and doors. The tapered edge applies compression against the glass to hold the window tightly in place and create a reliable watertight seal. Over time these seals begin to perish, shrink and become less effective so should be replaced to maintain a watertight and draft free home. They can be used on uPVC and composite windows and doors in residential and commercial buildings.
To identify the best replacement section you will need to carefully measure the gap where the seal will be fitted. This will usually be the gap between the glass and panel. It is essential to purchase the correct product to ensure that the replacement seal is large enough to put enough compression onto the glass but is not too big to be fitted into the available gap.
The installation of a new wedge gasket is a relatively straightforward process. These sections can be pressed into the glazing channel around the perimeter of the frame by hand and do not require any adhesive. The flexibility of the material allows for a degree of movement, accommodating the natural expansion and contraction of the frame and glass caused by temperature fluctuations.
All Glazing, Door & Window SealsFrequently Asked Questions
Installing a wedge gasket into your window frame is a relatively straightforward process. The first step involves cleaning the area where the gasket will be installed. This involves removing any dust, dirt or remnants from the old deteriorated gasket. This is important to ensure that the new wedge gasket can easily be pushed into the channel without obstruction.
Once the area is clean you will need to measure the length around the window where the gasket needs to be fitted. Accuracy in measurement is key as ensuring a snug fit will minimise the chance of water ingress. Once you have measured this area, cut the wedge gasket slightly longer than the measured length to allow for any minor discrepancies. The exact length can be trimmed during fitting.
The installation process involves carefully pressing the wedge gasket into the groove, starting at one end and gradually moving along the length of the seal. It is important to ensure that the gasket sits evenly in the groove without twisting. You may choose to use a small roller or a blunt tool to help push the gasket firmly into the channel.
Gently curve the wedge gasket around each corner. It may be necessarily to slightly stretch the section as you bend it. The goal is to keep the gasket flush against the frame throughout the corner without creating gaps or areas where it may bunch up.
The cost to replace the wedge gasket around your window varies depending on the size of the window frame. However, you will need approximately seven metres of a replacement wedge gasket to seal a standard sized window that consists of one window pane. This will allow for approximately three and a half meters either side of the glass. At an average price of £3.60 per metre, replacing the wedge gasket either side of one window pane will cost around £25.20 (excluding VAT).
Our volume discount allows for significant cost savings of up to 40% when replacing multiple windows in your property.
As wedge gaskets are available in a large range of sizes, you will need to measure the gap where the gasket will be fitted. There are several ways to take this measurement;
1) Remove the existing wedge gasket from one side of the window frame. Using a ruler you can then measure the gap between the glass and frame. Whilst this is normally very accurate, you should ensure that your ruler does not have space before the start of the first measurement as this will give you an inaccurate reading.
2) Alternatively, if you are in a position where you can remove the glass from the window frame, measure the interval width of the channel. You can then measure the thickness of your glass and calculate the size of the gap either side of the glass pane.
You will also need to measure the total length of seal you require. It is advisable to add a small extra length to the total measurement to account for any slight errors or adjustments needed during installation. With the correct measurements in hand, you can then choose a gasket that matches these dimensions, ensuring a snug and efficient fit.
For further information on how to measure this gap, please see our Measuring the Gap for Wedge Gaskets technical help guide.
Deciding on the best replacement wedge gasket for your windows may seem like a complicated task. Although this glazing gasket may not seem like the most important part of your window, it is essential for reducing draughts, water ingress and keeping your home warm and comfortable.
Our extensive range of both door and window seals allows you to choose a replacement section that is a replica to your existing seal. All of our products are manufactured from high-quality rubber compounds that have been specifically designed for residential and commercial doors and windows.
For further information or technical support with choosing the best replacement section, you can get in touch with our knowledgeable team.