SeeMyQuiltAttic Window quilt block
A square window with a dark strip on one side and a medium strip below. The corner where the strips meet is a half-square triangle that stands in for the mitered seam.
Cutting chart by block size
6" Attic Window (cut for one block)
| Fabric | Cut | Size | Then |
|---|---|---|---|
| Main | 1 rectangle | 4 1/2" × 2 1/2" | – |
| Main | 1 square | 2 7/8" × 2 7/8" | 1 triangles (cut once on the diagonal) |
| Background | 1 square | 4 1/2" × 4 1/2" | – |
| Accent | 1 rectangle | 4 1/2" × 2 1/2" | – |
| Accent | 1 square | 2 7/8" × 2 7/8" | 1 triangles (cut once on the diagonal) |
9" Attic Window (cut for one block)
| Fabric | Cut | Size | Then |
|---|---|---|---|
| Main | 1 rectangle | 6 1/2" × 3 1/2" | – |
| Main | 1 square | 3 7/8" × 3 7/8" | 1 triangles (cut once on the diagonal) |
| Background | 1 square | 6 1/2" × 6 1/2" | – |
| Accent | 1 rectangle | 6 1/2" × 3 1/2" | – |
| Accent | 1 square | 3 7/8" × 3 7/8" | 1 triangles (cut once on the diagonal) |
12" Attic Window (cut for one block)
| Fabric | Cut | Size | Then |
|---|---|---|---|
| Main | 1 rectangle | 8 1/2" × 4 1/2" | – |
| Main | 1 square | 4 7/8" × 4 7/8" | 1 triangles (cut once on the diagonal) |
| Background | 1 square | 8 1/2" × 8 1/2" | – |
| Accent | 1 rectangle | 8 1/2" × 4 1/2" | – |
| Accent | 1 square | 4 7/8" × 4 7/8" | 1 triangles (cut once on the diagonal) |
15" Attic Window (cut for one block)
| Fabric | Cut | Size | Then |
|---|---|---|---|
| Main | 1 rectangle | 10 1/2" × 5 1/2" | – |
| Main | 1 square | 5 7/8" × 5 7/8" | 1 triangles (cut once on the diagonal) |
| Background | 1 square | 10 1/2" × 10 1/2" | – |
| Accent | 1 rectangle | 10 1/2" × 5 1/2" | – |
| Accent | 1 square | 5 7/8" × 5 7/8" | 1 triangles (cut once on the diagonal) |
How to make a 15" Attic Window block
- Cut the pieces in the chart above. All measurements include a 1/4" seam allowance.
- Cut the squares marked "cut once" in half on the diagonal. Each gives two triangles. Sew them to their neighbours along the long edge first and press toward the darker fabric.
- Lay all the pieces out as in the diagram. The block is a 3 × 3 grid, and each cell finishes at 5". Sew neighbouring pieces into sections, then the sections into rows, pressing seams in opposite directions from row to row.
- Join the rows. The block should measure 15 1/2" now and 15" once it is sewn into the quilt.
Yardage for a Attic Window quilt (15" blocks)
| Quilt size | Blocks | Finished size | Main | Background | Accent | Border & binding | Backing |
|---|---|---|---|---|---|---|---|
| Baby | 2 × 3 (6) | 36" × 51" | 5/8 yd | 3/4 yd | 5/8 yd | 1 yd | 3 1/2 yd |
| Lap | 3 × 4 (12) | 51" × 66" | 3/4 yd | 1 yd | 3/4 yd | 1 1/8 yd | 4 1/4 yd |
| Throw | 4 × 4 (16) | 66" × 66" | 1 1/8 yd | 1 3/8 yd | 1 1/8 yd | 1 3/8 yd | 4 1/4 yd |
| Twin | 4 × 6 (24) | 66" × 96" | 1 3/8 yd | 2 yd | 1 3/8 yd | 1 1/2 yd | 6 yd |
| Queen | 6 × 6 (36) | 96" × 96" | 2 1/8 yd | 3 yd | 2 1/8 yd | 1 7/8 yd | 8 3/4 yd |
| King | 7 × 7 (49) | 111" × 111" | 3 yd | 4 1/4 yd | 3 yd | 2 1/8 yd | 10 yd |
Blocks side by side with a 3" border, 2 1/2" binding, 42" usable width and 10% extra.
Four ways to set it
A throw quilt of 15" Attic Window blocks in each setting.
| Setting | Blocks | Finished size | Extra fabric |
|---|---|---|---|
| Side by side | 16 | 66" × 66" | – |
| With sashing | 12 | 55" × 72" | Sashing 3/4 yd, Cornerstones 1/8 yd |
| Alternating plain blocks | 8 pieced + 8 plain | 66" × 66" | Plain blocks 2 yd |
| On point | 13 | 69 3/4" × 69 3/4" | Setting triangles 1 3/4 yd |
See Attic Window in your own fabrics
What to buy
| Fabric | Yardage | Cut |
|---|
Based on 42" usable fabric width, 1/4" seams and 10% extra. Your photos stay on your device.
Questions
How many fabrics does a Attic Window block need?
Three: main, background and accent. Choose a main fabric that contrasts clearly with the background so the design reads from a distance.
What size pieces do I cut for a 15 inch Attic Window?
1 main rectangle at 10 1/2" × 5 1/2"; 1 main square at 5 7/8" × 5 7/8"; 1 background square at 10 1/2" × 10 1/2"; 1 accent rectangle at 10 1/2" × 5 1/2"; 1 accent square at 5 7/8" × 5 7/8".
How many Attic Window blocks for a lap quilt?
12 blocks at 15", set 3 by 4 with a 3" border, make a 51" × 66" quilt.
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