Australia
Window Seat and Bay Window Cushions: A Guide for Australian Homes
How to measure, fill and cover a custom window seat or bay window cushion, including angled bay shapes.
On this page
Quick answer: Measure the seat at the front and back edges and the depth, in mm, and use a paper template for angled bay windows. Choose 50 to 100 mm of foam, a zip so the cover can be removed, and a fade-resistant fabric because window seats get a lot of sun. Warwick fabrics suit most interiors, and Sunbrella is a good choice for very sunny windows.
From Federation bay windows to modern reading nooks, a window seat is one of the best spots in the house, as long as the cushion fits. Window seats are rarely perfectly square, so a ready-made cushion almost never sits right. Here is how to get a custom cushion that does.
Measure for the shape you actually have
- Rectangular seats: measure the width at the front and back and the depth. Walls are often not square, so use the smaller measurement if they differ.
- Bay windows: the seat is often a trapezoid with angled ends. Measure the front, back and both sides, or trace a paper template.
- Seats with trims or notches: note any architraves, posts or cut-outs so the cushion can be shaped around them.
Our mm measuring guide has more detail.
Foam thickness
Most window seats suit 50 to 100 mm of foam. Go thinner if the sill sits low or the seat doubles as a display ledge, and thicker if it is a reading nook you will lounge on. See our foam thickness guide.
Fabric that copes with the sun
Window seats sit in direct sun for hours, so fade resistance matters. Warwick offers a wide range of interior fabrics, and its performance ranges such as Eastwood and Jefferson are popular for everyday seating. For the sunniest north-facing windows, a solution-dyed Sunbrella upholstery fabric holds its colour best.
Finishing touches
- A zip along the back so the cover can come off for cleaning
- Piping for a crisp, tailored edge
- Scatter cushions and bolsters against the window frame
Get started
Build your cushion on our indoor bench and window seat cushions page, or order a banquette cushion for a breakfast nook. Shipping is free anywhere in Australia, and prices are shown in AUD.
Frequently asked questions
How thick should a window seat cushion be?
Usually 50 to 100 mm. Go thinner for a low sill and thicker for a reading nook.
Can you make a cushion for an angled bay window?
Yes. Send us the measurements of every side or a paper template and we will make it to that shape.
What fabric is best for a sunny window seat?
A fade-resistant fabric. Warwick's performance ranges suit most interiors, and Sunbrella upholstery fabric is best for very sunny windows.
Will the cover be removable?
Yes. Our custom cushions have a zip so the cover can be removed for cleaning.
Do you ship window seat cushions free in Australia?
Yes. Shipping is free anywhere in Australia, and prices are shown in AUD.
