Everything You Will Ever Need To Know About Bay Windows

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Bay window image grey aluminium

So in this guide, we will attempt to explain everything you will ever need to know about bay windows!

Buying a bay window can be a costly experience if you do not know the facts about how to buy a bay window without breaking the bank.

So, let’s start with the basics!

What is a bay window?

A bay window is generally a sequence of windows that make up a bay protruding from a wall within a room; there are a few different styles of bay window we can help you get funding to purchase.

Circle bay windows – Form a semi-circle protruding from the wall of your property, usually made up of several window frames joined together using bay posts.

The box bay window – Usually made up of 3 window frames joined in the corners with a 90-degree bay post, giving a square shape protruding from the wall.

A bow window – These are one of the most popular types of bay window, due to the amount of light that they let into the property, usually including more opening sashes than a typical bay window.


How much is a bay window

How much is a bay window?

Bay window costs can vary quite dramatically due to many different factors, such as; quality of the frames, installer mark up, U-Value of the windows, size of the bay or type of bay window selected.

We have included some rough guide prices for the different styles of bay window that you can choose from.


#Number of Bay SectionsBay Window TypeAverage Bay Window Cost
13UPVC Bay Window£1100
24UPVC Bay Window£1500
35UPVC Bay Window£2000
43Aluminium Bay Window£2500
54Aluminium Bay Window£3000
65Aluminium Bay Window£3500

These prices are a rough guide for average size bays, the cost of double glazed bay windows could vary depending on height and the quality of the windows being installed.

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Bay window materials

Bay windows come in a variety of materials, the two most popular being: UPVC and Aluminium.

Both options come with their advantages, UPVC windows being the most cost-effective solution.

Both options have similar benefits.


  • Thermally efficient
    They look impressive
    Stong load-bearing capabilities

UPVC bay windows are generally for more common due to the reduced costs and the large variety of options available.


Manufacturing times are usually a hell of a lot less, and this can be an advantage if you are working to a time scale or just cant wait to have your new windows installed.


Double Glazing Funding has a wide variety of funding options available and will give you the best advice when selecting installers to fit your new bay window.

How to install a bay window image

How to install a bay window


Not that we would recommend that you install your bay windows but here is a brief explanation of how to install a bay window correctly.


First of all the fitters will remove the existing window or cut a new hole in the wall where the bay window will be positioned.


Removing windows can be quite a dusty, messy experience, but using quality installers will ensure that it is carried out with as little disruption as possible.

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Once the window has been removed, the installers will then create the new box to fit the new frames in to.


The window frames can then be installed into the box frame.


The roof will then be installed and sealed correctly, usually using lead, trims and final sealant will be applied to ensure a weatherproof seal is made.


Finally, the glass can be installed, and cleanup and wipe down will be carried out.


Double Glazing Funding only use FENSA, CERTASS or DGCOS registered installers


Bay window with blind

How to dress a bay window


So now you have your lovely new bay windows, the only thing left to do is to dress them appropriately!


Bay windows are notoriously hard to dress, you may want to opt for a professional company to decorate them for you, after all, you have potentially parted with quite a large sum of money to have them installed.

For those that do want to dress them themselves, here are some ideas and methods you may choose for the perfectly dressed bay window.


Blinds and Curtains


Blinds and curtains are a popular option for dressing a bay window in the UK, this option can, however, be quite restrictive on the amount of light allowed in.

An image of a bay window

Hanging a curtain for each section of the bay window


This option can get extremely fiddly and finding curtain poles to fit each frame can be hard; if you do manage to pull it off; however, it can create quite a spectacular feature in the room.


Hanging a curtain across the front of the bay


This option is by far the most straightforward but seeing as you have already paid for the expensive part (The Bay Window), I would personally want to go for one of the options above to give it the finish it deserves.

However, if you like the look of this option, it is effortless to complete; hang a curtain pole stretching the width of the front of the bay and hang your curtains and position your tie backs.

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