Bay window seat cushions: measurements, drawing and template

A window seat can be rectangular, trapezoidal or have several changes of direction. The actual outline matters more than the furniture name. Use this brief to organize measurements and decisions before fabric or foam is cut.

Real custom-cushion references

Cushion Source identifies its bay window cushion as CS-112-5C7UD and accommodates templates for particular shapes. The CustomCushions configurator distinguishes front width, back width, depth and thickness. These illustrate information to define; one supplier’s tolerances or terms do not apply automatically to another.

Draw the required outline

1. Sketch a top view. Clearly mark the front, back and left/right orientation.
2. Record each edge separately. Identify front, back, depth and changes of direction; do not draw an angled outline as a rectangle.
3. Separate measurements of the supporting surface from proposed finished cushion dimensions. Have the shop confirm the intended fit.
4. Record proposed thickness, adjacent pieces, storage-lid access and anything that could interfere. Label every measurement with its unit.

When to agree on a template

For curves, notches or complicated angles, ask the maker which template format they accept. Agree on orientation, scale and what the outline represents. Keep an identified copy and ask for receipt confirmation before authorizing cutting.

One cushion or several pieces?

• Continuous cushion: discuss handling, delivery and access to storage lids you need to open.
• Separate pieces: draw the joints and agree how seams or fabric patterns should align.
• Cover and filling: specify whether both are included and how you will assess the proposed support.
• Care: retain the fabric reference and its instructions. A zipper gives access to filling; it does not establish that a cover is machine washable.

Approve the drawing before fabrication

Request a final drawing with finished dimensions, units, orientation, thickness, material and the tolerance agreed with that shop. Review it alongside the template, if provided. At handover, check the intended fit and access against your order rather than a catalog example.