Windham Fabrics Window Pane - Downloadable PDF

Window Pane Quilt Pattern by Wendy Sheppard for Windham Fabrics

Window Pane is a free, downloadable PDF quilt pattern designed by Wendy Sheppard and published by Windham Fabrics. Rated at an intermediate skill level, this pattern produces a striking quilt top measuring 59" x 77" — a generous throw or lap quilt size that works beautifully as a bed accent or cozy home décor piece. The design features the Midsummer fabric collection by Hackney & Co., giving the finished quilt a sophisticated, tonal palette built around cool neutrals and soft blues.

About the Design

The Window Pane quilt takes its name from its structured, grid-like visual effect, which mimics the look of windowpanes set within frames. The layout combines carefully pieced blocks arranged in a sashing-and-cornerstone setting, creating a clean, architectural aesthetic. The design balances geometric precision with approachable construction, making it an excellent project for quilters who have moved beyond beginner basics and are ready to work with multiple fabric placements and organized block assembly.

What Is Being Made

This pattern produces a single quilted blanket or throw. The finished quilt top is constructed from:

• Pieced blocks assembled from a combination of rectangles and squares in multiple coordinating fabrics
• Sashing rectangles that frame and separate the pieced blocks across the quilt layout
• Cornerstones placed at the intersections of the sashing to add visual punctuation and structure
• An outer border that frames the entire quilt top and brings the finished dimensions to 59" x 77"
• Binding to finish the quilt edges cleanly

Techniques Used

This is a quilting project that draws on several foundational and intermediate patchwork techniques:

• Strip cutting and subcutting — Fabric is cut into width-of-fabric (WOF) strips first, then subcut into precise rectangles and squares. Careful marking and storage of cut pieces by block assignment is specifically recommended in the pattern notes to keep the process organized.
• Pieced block construction — Multiple fabric pieces are sewn together in a deliberate arrangement to build each individual block unit. Accuracy in cutting and seam allowances is essential at this stage.
• Sashing and cornerstone setting — A classic quilting layout technique in which strips of fabric (sashing) separate the blocks in both rows and columns, with small squares (cornerstones) placed at each intersection. This method adds structure and a polished, traditional look to the finished top.
• Border attachment — Pieced border strips are joined and trimmed to specific lengths before being sewn to the quilt top, requiring accurate measurement and mitered or straight-set corner construction.
• Binding — The quilt is finished with a traditional binding cut from WOF strips, which are pieced together and applied around the perimeter of the quilt sandwich.

Fabrics and Materials

The pattern is designed specifically around fabrics from the Midsummer collection by Hackney & Co., available through Windham Fabrics. Four specific fabrics are called out in the cutting instructions:

• Fabric A — SKU 31835S, White (3 yards): Used for the pieced blocks, outer border, and binding. This is the dominant background fabric and requires the largest yardage.
• Fabric B — SKU 52317-5, Slate (1⅓ yards): Used in the pieced blocks and for the sashing rectangles and cornerstones, anchoring the layout with a cool mid-tone.
• Fabric C — SKU 52320-8, Pewter (⅝ yard): Used exclusively in the pieced blocks, contributing a soft neutral contrast.
• Fabric D — SKU 52318-7, Sky (⅝ yard): Used in the pieced blocks, introducing a gentle blue tone that complements the slate and pewter colorways.