Do I Need Planning Permission to Install Secondary Glazing?

Secondary glazing can be put in within the frame of the existing one to mute outside noise and lower energy bills. This is perfect for period homes and listed buildings, where replacing windows is not an option.

It's also a fantastic solution to damp buildings, but only after other issues have been resolved. This will prevent draughts from blocking the building from receiving vital airflow.

Do I need planning permission?

Changing windows is one of the most frequent home improvement projects that homeowners undertake. Homeowners may wonder whether they need permission to plan for the installation of new windows. In the majority of cases, if you are replacing old windows with identical replacements and the work doesn't alter the appearance of the property you don't need to apply for permission for planning. However, it is an excellent idea to get in touch with your local authority and verify before beginning any home improvement project.

The good news is that installation of secondary glazing does not require permission for planning, nor is the draught-proofing of existing windows. This is because the addition of additional glass to the window will not alter the overall appearance of the building, neither does it alter the size or shape of the window. It is also a cost-effective and convenient option to increase the thermal insulation in buildings of the past.

Secondary glazing isn't able to hold heat as efficiently in your home like a double-glazed window but it is excellent at preventing air leakage. This helps keep your heating costs down. It can also help reduce the amount of noise pollution. This makes it a great option for homes near railway stations, airports and constructed areas.

If you are constructing or replacing windows in a listed building, or a conservation zone or conservation zone, you may need to obtain permission to plan. In this instance, you will need to have drawings that are detailed by a reputable architectural practice to show how your proposed work is in keeping with the character and appearance of the building.

If you reside in a property that was built before the time of the Civil War the best way to increase the thermal insulation of your home without compromising the appearance of your original windows is to use secondary glazing. This is because it provides the same look and feel as windows of the past, but with the added benefit of being more energy efficient and reduces noise pollution. It is also easy to install and can be removed at any time.

Can I do it myself?

If you're a seasoned DIYer and your home has suitable windows and doors, it might be possible for you to install secondary glazing yourself. This isn't a great option for those who have no experience in window installation.

The secondary glazing process involves carefully fitting a second piece of glass inside the windows that are already in place. This provides thermal and acoustic protection, as well as draught control and condensation control. It also provides additional security since it's an invisible barrier for potential intruders.

Measure the internal dimensions of the window frame. This will provide you with the measurements needed to order a secondary glazing pane that's made-to-measure. You can also purchase a secondary glazing kit that comes with everything you require. They are accessible from hardware stores as well as online retailers, but they vary significantly in quality and features. The cheaper products may have sheets of glass or magnetic strips. The most expensive products, however, will include genuine glass panes.

After you've placed your order for the secondary glazing, prepare the window by cleaning and sanding the edges in order to remove any varnish or paint. Also, you should clear any dust, debris or dirt to avoid damage to the new panes. If your window frames have TV aerials or telephone junction boxes then you'll need to relocate them prior to installing secondary glazing. Most secondary glazing companies can notch the frame so that the cables can pass through. They'll also provide you with cable clips to ensure an unsecure installation.

Once you're ready for installation the glass, place a piece of insulation tape on the edges of the secondary glazing. This will make the glass airtight, and it's also an excellent idea to apply this tape to the frame's exterior as well. This will give your window a professional look and ensure that the secondary glazing is securely attached to the frame.

Then, carefully position the second glazing against the window you have already installed and mark the locations for drilling. Remove the duct tape, and carefully drill through the holes you've marked. After the holes have been drilled you can remove the duct tape, and employ a damp cloth clean the frame.

Do I Need a Specialist?

If you're planning to purchase secondary glazing, make sure you choose a company with an excellent reputation and is registered by professional organisations. Read double glazing doors didcot and make sure you read both positive and negative reviews, and then ask friends and family members for recommendations. Check if the company is registered under FENSA. This will ensure that replacement windows and doors comply with building regulations in England & Wales.

Secondary glazing is an affordable option that can add an additional slimline window to your windows. It's designed to cut down on the cost of energy and noise pollution which makes it a good choice for anyone looking to reduce their carbon footprint. The additional layer of glass can also help reduce air draughts, ensuring your home stays warm and comfortable all entire year.

With a wide range of colors and finishes available there is a secondary glazing that will fit your home perfectly. Our latest range of products comes with ultra-slim sightlines, which means your new addition is barely noticed from the outside. Additionally, they can be easily opened and closed for easy cleaning or fresh air in your property.

In contrast to double glazing, which involves the installation of two separate frames, secondary glazing is fitted to the inside of the window frame. It can be put in place by using face fixing or reveal fixing, with each option providing different advantages in terms of thermal and acoustic. A professional glazier can tell you on the best option for you.

Secondary glazing is the best solution for a lot of homeowners, particularly if they reside in listed structures or conservation areas and are unable to replace their windows with double-glazed. It is much cheaper than replacing original windows and can be removed easily should it be required in the future. It's also a great option to prevent condensation, which can result in damp and black mold, and also increase security since it provides a second layer of protection to single-glazed windows.

Secondary glazing can be fitted on sliding or fixed windows and is able to be adjusted to fit the majority of styles currently in use. It is important to remember that it's not as efficient as double glazing at insulating your home because there's still an air gap between the primary window and the secondary pane.

What are the advantages of Secondary Glazing?

Secondary glazing is a great way to improve your property's sound and thermal performance. It can be installed on windows that are already in place, and based on the system you select, it may also provide an additional level of security. There are many options available, including those for sliding sash windows and designed for uPVC frames. There are even systems that can be removed during summer months to allow air to circulate more freely.

One of the greatest benefits of secondary glazing is that it forms an insulating barrier, preventing heat loss and cold draughts. This can significantly cut your energy costs and create an environment that is more relaxing. It's especially useful for older properties that have inadequate insulation, or newly build homes where the frames are still in the process of settling.

As opposed to double glazing, which demands the removal of your existing window, secondary glazing doesn't involve drastic changes to your home. It's a more subtle option that can be used with the windows you already have. It is either permanent or temporary depending on your needs.

A secondary glazing system can reduce noise pollution. This is especially true if your home is located close to a busy road or flight path. The twin brush seals that are found in the majority of secondary glazing systems guarantee an extremely effective seal, which can cut down the noise level by up to 75 75%.


We suggest hiring an expert to install secondary glass. This will ensure that the job is done correctly and that it will provide all of the benefits that you want. If you attempt to install it yourself, you may be left with gaps in the seals, a wrong fitting or even damage to existing windows.

If you are planning to install your own secondary glazing, it is essential to wear the proper safety equipment, particularly when cutting glass. Before you begin, ensure that you have all the needed tools and materials. Local companies can provide a more efficient service and quicker response times.