To get the best fit we decided to make one extra long bay window seat cushion with angled sides to match the shape of the bench.
How to make a bay window bench seat cushion.
Foam can be purchased at most fabric stores.
The window seat in need of a cushion was a long bench in the curved opening of a bay window.
We used dura skrim pattern material to trace the shape of the bench to be sure we had the angles just right.
This will be the size of the finished cushion.
You don t want to have to use more than one piece of foam.
A built in bookshelf is a good choice if you have narrow space.
Purchase foam and cut it the size of the plywood.
Get a piece of foam that will serve as the inside of the cushion.
The length of the bench and the width of the bench.
The window seat has a soft cushion several pillows storage under the cushion and a built in bookshelf.
Then staple the middle of each side keeping the fabric tight really tight i didn t do this well enough.
Align this crease to the center of the bay.
Measure the width across the front of the bay opening and record this measurement as the cushion finished length.
Double check to make sure it s looking good then staple around the rest of the cushion.
Step 2 foam and fabric cutting foam comes in several sizes and styles.
Lay the fabric over the cushion and make sure its straight.
I used a electric meat carver to cut my foam.
How to make a window seat cushion.
Fold the paper in half along the cushion width and crease it.
Measure the distance from.
Look for a piece that is about 3inches thick and at least as long as your window seat bench.
There are two measurements that you will need.
Tape the front of the paper.
If you want to have two cushions then split the length in half.
You can have memory foam or just regular foam padding.
Cut the foam to fit the dimensions of the bench.