How do I Measure a Circular Bay Window?

We’ve given advice in the past about how to measure your bay windows, but admittedly, some are more complicated than others. One of our customers from the USA has been asking for advice on how to measure a round bay. It might seem difficult, but it’s probably not as complicated as you think.

If you’re after a new curtain track and have been wondering how to take the measurements, have a look at our simple instructions.

 

Step 1 – Work at the Right Height

 

Before you start measuring, you need to make sure you can reach properly. You can’t measure the bay at floor level in case the walls aren’t perfectly straight, so get up to the height where the curtains will be fixed. Be safe, though – make sure whatever you stand on is sturdy and secure. A step ladder is probably the best bet (or ask someone tall to help).

 

Step 2 – Measure Across the Bay

 

Now you can actually begin taking measurements. Firstly, measure across the bay from corner to corner, in a straight line (A to C).

 

Measuring the width of the bay

Step 3 – Measure at Right Angles

 

Next, measure from the centre of your A to C line (D) to the middle of the curved wall (B). You may want to mark point B with a drawing pin or Blu-Tack as you’ll be measuring to this point again later.

Measuring the depth of the bay

 

Step 4 – Double Checking

 

The two measurements you’ve taken so far are technically enough for us to bend the track or pole, but we also like extra measurements to double check. That way, you can be sure everything will fit.

 

The best measurements for this are from the corners of the bay to the centre of the curve (A to B and B to C). Don’t worry if these measurements aren’t quite the same – we can still work with them to map out the design.

 Extra measurements

Step 4 – Reverse Bends (Optional)

 

If you want your curtain rod to start and end at points A and C, that’s all you need. However, sometimes it’s nice to have ‘reverse bends’ at one or both ends i.e. the pole turns a corner and comes out of the bay.

If that’s the case, simply measure from points A and C to where you’d like the track to end (1 to A and 2 to C).

Measuring reverse bends

Step 5 – Brackets

 

Those are all the measurements we need to shape your bay window curtain pole, but we also need to know how you intend to fix it in place.  If you are ‘face fixing’ (i.e. attaching it to the wall), we need to make an allowance for brackets so everything will fit properly.

Sizing up the curtain pole brackets

 

If you’d like the track to be top fixed (i.e. to the ceiling), let us know how far from the wall you’d like it to be.

 

Ceiling fixtures for your curtain track

 If the track or pole is to have reverse bends, you could even use a combination of both top and face fix brackets.

 

Combining face and top fix brackets

 

Still have questions? We’ve got the answers. Just get in touch and we’ll talk you through the whole process.

 

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