A Guide to Buying Double Glazed Windows

Double glazed windows are a great investment for your home. Whether you’re thinking of replacing existing windows or installing new ones, it’s important to do your research. Here are a few things to consider when replacing or installing double glazing.

Check if you need planning permission

The first thing to do is to make sure you don’t need planning permission. Now, it’s fairly unlikely that this will be an issue, but it’s still worth checking just in case. If you live in a listed building, a conservation area, or your property has an article 4 direction, then you may need permission from your local authority to install or replace your home’s windows. You can call your local planning authority (LPA) to check if your project will need planning permission.

Choose a style that matches your property

Look at properties similar to yours to help to decide what style of window to opt for. You should also consider factors such as the age and colour of your home. There are plenty of styles available, so there’s an option for all different tastes and types of property. If you already have other double glazed windows that you are not planning on replacing, make sure your new windows match the old ones.

Choosing an installer

When choosing an installer for your double glazing, it’s important to make sure they are certified by a body such as FENSA or CERTASS. You should also check how long they have been in business and how much experience the installers have. If you can, it is also useful to find reviews and testimonials from former customers. This will give you a clue as to the quality of the supplier. If you’re looking for windows Birmingham based company Mainstream Double Glazing is a trusted local installer.

Check the guarantee

Before buying your double glazed windows, it’s important to check your supplier offers some kind of guarantee. Ideally, this would be at least a 10-year warranty. A long warranty such as this reflects the retailer’s confidence in their product and gives you the reassurance that you will be able to have any faults that may appear repaired free of charge. A shorter guarantee, or no guarantee at all, is a red flag as it may mean the supplier is aware that their product is not long-lasting and could result in you footing the bill for an expensive repair or replacement further down the line.

Check the Window Energy Rating (WER)

To get an idea of how energy efficient the windows you are considering purchasing are, take a look at the Window Energy Rating (WER). This is a nationally recognised system for ranking windows on their efficiency. The scale ranges from A++ to G, with C being the legal minimum for windows installed in the UK. The higher up the scale, the more expensive a window will be. However, if you can afford it, it may be worth the extra initial investment for a high grade window, as you are likely to eventually make up the cost in energy bill savings.

EAN Content

Content shared by this account is either news shared free by third parties or sponsored (paid for) content from third parties. Please be advised that links to third party websites are not endorsed by Estate Agent Networking - Please do your own research before committing to any third party business promoted on our website. As an Amazon Associate, I earn from qualifying purchases.

You May Also Enjoy

Estate Agent Talk

How the Final Week Before Moving Day Makes or Breaks a Sale

If you’ve ever had a client who swore they dotted their i’s and crossed their t’s a week before moving day, you probably already know what this post is about. Most people think the hard part’s over once contracts are signed and moving vans are booked. But if you’ve been in this business long enough,…
Read More
Estate Agent Talk

Crafting Your Ideal Workspace: Desks and Chairs for Productivity

Creating a workspace that helps you stay focused and productive starts with the basics. The desk and chair you choose are not just pieces of furniture. They influence your comfort, posture, and ability to concentrate throughout the day. A well-planned setup can make a noticeable difference in how efficiently you work. Choosing the Right Desk…
Read More
Breaking News

New research spotlights AML compliance vulnerabilities for estate agents

This comes amid the news that almost 200 estate and lettings agents have been fined by HMRC for AML failings New research from client due diligence platform Thirdfort reveals that senior managers in estate agencies are not taking AML compliance seriously enough. Despite many taking the threat of money laundering very seriously, some 54% of…
Read More
Breaking News

House survey enquiries surge in 2025

Enquiries for house surveys have risen sharply in the first half of 2025, up over 83% compared to the same period in 2024. More buyers are taking the condition of a property seriously before committing, showing a clear shift towards due diligence.  Compare My Move’s research reveals that Level 2 and Level 3 house surveys…
Read More
Rightmove logo
Breaking News

Price is key as sellers compete for buyers with big July price drop

The average price of property coming to the market for sale drops by 1.2% (-£4,531) this month to £373,709. With the number of available homes still at a decade-high level, summer sellers are pricing even more competitively to attract buyer interest: London is the biggest regional driver of new seller asking price falls this month…
Read More
Estate Agent Talk

5 Top Tips for Improving Your Home for Selling

Selling your home can be a lengthy process, often with a long wait for potential buyers to view and make an offer on your property. However, there are ways you can speed up the process and make your home appealing to the masses for a quick sale. If you’re hoping to create the vision of…
Read More