How To Measure for a Bay Window

What is a bay window?

A bay window arises is when three or more of the windows in a room meet. When installing shutters to a bay window, we can design them so that one frame occupies your entire bay window. We use special bay posts to connect all the panels together. Check out the instructions below for help with measuring up for a bay window.

Murray 65 PRINT 1767

measuring for a bay window

Bay windows are a little trickier to measure than stand-alone rectangular windows. We've tried to make the measuring process straightforward. However, if you get stuck, you can always reach out with photos of your bay windows and we'll guide you through the process. 

Essentially, you can treat your bay window like three separate windows - LEFT (L), MIDDLE (M), RIGHT (R).

choosing the right frame

To get started, you'll first need to work out which frame type you'll be on your window. Will you be inside mounting or outside mounting your shutters? For bay windows, we recommend using either the Inside L-frame or the Outside L-frame.

Getting started

To get started, you will need:

  • Metal measuring tape
  • Paper
  • Pen

When designing your shutters, we will treat the bay window as three separate windows. First, design Bay Window L. Next design Bay Window M. Finally, Bay Window R. Once you've placed your order, we'll combine all three windows into a single bay window or you. 

Remember, we call every customer for a review before submitting orders for manufacture!

Check your angles (the 45° test)

To ensure that the angle of your bay window will fit out 45 degree corner piece, you can simply fold a piece of paper like the below image. Place it in front of the corner of your window and see if the angle matches.

Shutters Dept Measuring for Bay Windows Folding Paper

measuring for an inside l-frame

Let's begin by separating your bay window it three separate windows - Left Window (L), Middle Window (M), Right Window (R). Remember, always start from the left when measuring. We're measuring for an inside mount, so we always measure from inside the recess.

  1. 1. Measure the width of the left window (L)
  • Start inside and on the very edge of the left hand recess.
  • Measure to the end of your left window recess (i.e. the point where L & M windows join). 
  • Measure this distance in 2 different places.
  • Select the smallest of the 2 measurements.
  • Mark your Measure Point L with a pencil.

 Shutters Dept Measuring for Bay Windows Inside L Frame A 1

2. Measure the width of the middle window (M)

  • Start at Measure Point L and measure to the end of your middle window recess (i.e. the point where M & R windows join).
  • Measure this distance in 2 different places.
  • Select the smallest of the 2 measurements.
  • Mark Measure Point M with a pencil.

 Shutters Dept Measuring for Bay Windows Inside L Frame B2

3. Measure the width of the right window (R)

  • Start at Measure Point M and measure to the very edge of the right hand recess.
  • Measure this distance in 2 different places.
  • Select the smallest of the measurements.

Shutters Dept Measuring for Bay Windows Inside L Frame C

4. Measure the drop 

  • Measure from bottom to top in 3 different places.
  • Select the smallest of 3 measurements.

 Shutters Dept Measuring for Bay Windows Inside L Frame D

measuring for an outside l-frame

Let's begin by separating your bay window it three separate windows - Left Window (L), Middle Window (M), Right Window (R). Remember, always start from the left when measuring. We're measuring for an outside mount, so we always measure from the edges of your architraves. If you don't have an architrave, you'll be measuring as if you will be inside mounting and we will make automatic additions to your measurements (see above for measuring instructions).

  1. 1. Measure the width of the left window (L)
  • Start at the edge of your left hand architrave.
  • Measure to the point where L & M  architraves meet.
  • Measure this distance in 2 different places.
  • Select the largest of the 2 measurements.
  • Mark your Measure Point L with a pencil.

Shutters Dept Measuring for Bay Windows Outside L Frame A 1

2. Measure the width of the middle window (M)

  • Start at Measure Point L and measure to the end of your middle window architrave (i.e. the point where M & R windows join).
  • Measure this distance in 2 different places.
  • Select the largest of the 2 measurements.
  • Mark Measure Point M with a pencil.

Shutters Dept Measuring for Bay Windows Outside L Frame B

3. Measure the width of the right window (R)

  • Start at Measure Point M and measure to the very edge of the right hand architrave.
  • Measure this distance in 2 different places.
  • Select the largest of the measurements.

Shutters Dept Measuring for Bay Windows Outside L Frame C

4. Measure the drop

  • Measure from the edge of the bottom architrave to the edge of the top architrave in 3 different places
  • Select the largest of 3 measurements.

 Shutters Dept Measuring for Bay Windows Outside L Frame D

 

Measuring is a critical part of the Design Process. Once your order has been processed, we will always call you before finalising to ensure measurements are accurate. If you’re confused or have any questions about measuring, please send us an e-mail or give us a call. One of our team would be happy to help out!

surcharge

Fitting custom made shutters to bay windows takes additional effort and time and also requires specialty parts. Due to this, we charge a further 10% for the price of all corner and bay window shutters. 

 

 

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Alec Webster
By: Alec Webster Published: 18 Mar 2020